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| 1 | Spatio-temporal changes in biomass carbon sinks in China's forests from 1977 to 2008显示文摘Forests play a leading role in regional and global carbon (C) cycles. Detailed assessment of the temporal and spatial changes in C sinks/sources of China's forests is critical to the estimation of the national C budget and can help to constitute sustainable forest management policies for climate change. In this study, we explored the spatio-temporal changes in forest biomass C stocks in China between 1977 and 2008, using six periods of the national forest inventory data. According to the definition of the forest inventory, China's forest was categorized into three groups: forest stand, economic forest, and bamboo forest. We estimated forest biomass C stocks for each inventory period by using continuous biomass expansion factor (BEF) method for forest stands, and the mean biomass density method for economic and bamboo forests. As a result, China's forests have accumulated biomass C (i.e., biomass C sink) of 1896 Tg (1Tg=1012g) during the study period, with 1710, 108 and 78 Tg C in forest stands, and economic and bamboo forests, respectively. Annual forest biomass C sink was 70.2 Tg Ca-1 , offsetting 7.8% of the contemporary fossil CO2 emissions in the country. The results also showed that planted forests have functioned as a persistent C sink, sequestrating 818 Tg C and accounting for 47.8% of total C sink in forest stands, and that the old-, mid- and young-aged forests have sequestrated 930, 391 and 388 Tg C from 1977 to 2008. Our results suggest that China's forests have a big potential as biomass C sink in the future because of its large area of planted forests with young-aged growth and low C density. | GUO ZhaoDi HU HuiFeng LI Pin LI NuYun FANG JingYun | 2013 | Science China(Life Sciences)2013，56，7： | 44 |
| 2 | Terrestrial carbon sinks in China and around the world and their contribution to carbon neutrality显示文摘Enhancing the terrestrial ecosystem carbon sink(referred to as terrestrial C sink) is an important way to slow down the continuous increase in atmospheric carbon dioxide(CO_(2)) concentration and to achieve carbon neutrality target.To better understand the characteristics of terrestrial C sinks and their contribution to carbon neutrality,this review summarizes major progress in terrestrial C budget researches during the past decades,clarifies spatial patterns and drivers of terrestrial C sources and sinks in China and around the world,and examines the role of terrestrial C sinks in achieving carbon neutrality target.According to recent studies,the global terrestrial C sink has been increasing from a source of (-0.2±0.9) Pg C yr^(-1)(1 Pg=1015g)in the 1960s to a sink of (1.9±1.1) Pg C yr^(-1) in the 2010s.By synthesizing the published data,we estimate terrestrial C sink of 0.20–0.25 Pg C yr^(-1) in China during the past decades,and predict it to be 0.15–0.52 Pg C yr^(-1) by 2060.The terrestrial C sinks are mainly located in the mid-and high latitudes of the Northern Hemisphere,while tropical regions act as a weak C sink or source.The C balance differs much among ecosystem types:forest is the major C sink;shrubland,wetland and farmland soil act as C sinks;and whether the grassland functions as C sink or source remains unclear.Desert might be a C sink,but the magnitude and the associated mechanisms are still controversial.Elevated atmospheric CO_(2) concentration,nitrogen deposition,climate change,and land cover change are the main drivers of terrestrial C sinks,while other factors such as fires and aerosols would also affect ecosystem C balance.The driving factors of terrestrial C sink differ among regions.Elevated CO_(2) concentration and climate change are major drivers of the C sinks in North America and Europe,while afforestation and ecological restoration are additionally important forcing factors of terrestrial C sinks in China.For future studies,we recommend the necessity for intensive and long-term ecosystem C monitoring over broad geographic scale to improve terrestrial biosphere models for accurately evaluating terrestrial C budget and its dynamics under various climate change and policy scenarios. | Yuanhe Yang Yue Shi Wenjuan Sun Jinfeng Chang Jianxiao Zhu Leiyi Chen Xin Wang Yanpei Guo Hongtu Zhang Lingfei Yu Shuqing Zhao Kang Xu Jiangling Zhu Haihua Shen Yuanyuan Wang Yunfeng Peng Xia Zhao Xiangping Wang Huifeng Hu Shiping Chen Mei Huang Xuefa Wen Shaopeng Wang Biao Zhu Shuli Niu Zhiyao Tang Lingli Liu Jingyun Fang | 2022 | Science China(Life Sciences)2022，65，5： | 32 |
| 3 | Ultralong cycle life enabled by in situ growth of CoMo_(1-x)P/Mo heterostructure for lithium-sulfur batteries显示文摘Lithium-sulfur batteries(Li-S batteries) are considered as promising new-generation electrochemical energy storage devices due to their extremely high theoretical energy density(2600 Wh kg-1) and theoretical specific capacity(1675 m Ah g^(-1)). However, numerous problems such as poor conductivity and the shuttle effect during discharge-charge process limit the practical application of lithium-sulfur batteries. In this work, porous tubular Co Mo_(1-x)P/Mo constructed by in situ growth of metal Mo was designed as the sulfur host for lithium-sulfur batteries. The introduction of Mo modulated the electronic structure of Co Mo P to improve the conductivity of cathode and facilitate the redox kinetics, as well as the Co Mo_(1-x)P/Mo heterostructure was beneficial to inhibit the shuttle effect through the interaction with lithium polysulfides, which improved cycling stability. As a result, Co Mo_(1-x)P/Mo/S cathode had a low-capacity decay rate of only 0.029% per cycle after 2000 cycles at 0.5 C. This work provided a new perspective for the further design of high-performance lithium-sulfur battery cathode materials. | Donghua Guo Mengwei Yuan Xingzi Zheng Miaomiao Li Caiyun Nan Genban Sun Xianqiang Huang Huifeng Li | 2022 | Journal of Energy Chemistry2022，31，10： | 2 |
| 4 | Erratum to“Impact of satellite blood culture on early diagnosis of sepsis”[Journal of Intensive Medicine volume 2(2022)56–60]显示文摘The publisher regrets the article titled“Impact of satellite blood culture on early diagnosis of sepsis,”[1]published on pages 56-60,Issue 1,Volume 2 in Journal of Intensive Medicine(http://gffzz9a2937bbd76e4fd3sq5vw0pnck9v96qwu.ffgz.tsg.suse.edu.cn/science/article/pii/S2667100X21000475)contains a mistake in Abstract.The sentence in the Results“median ICU lengths of stay were 18.00 days and 23.50 days”should be“median lengths of hospital stays were 18.00 days and 23.50 days”.The publisher would like to apologize for any inconvenience caused. | Ziqi Guo Bo Guo Shanmei Wang Huifeng Zhang Wenxiao Zhang Bingyu Qin Huanzhang Shao | 2022 | Journal of Intensive Medicine2022，2，2： | 1 |
| 5 | Metabolic engineering of Yarrowia lipolytica for scutellarin production显示文摘Scutellarin related drugs have superior therapeutic effects on cerebrovascular and cardiovascular diseases.Here,an optimal biosynthetic pathway for scutellarin was constructed in Yarrowia lipolytica platform due to its excellent metabolic potential.By integrating multi-copies of core genes from different species,the production of scutellarin was increased from 15.11 mg/L to 94.79 mg/L and the ratio of scutellarin to the main by-product was improved about 110-fold in flask condition.Finally,the production of scutellarin was improved 23-fold and reached to 346 mg/L in fed-batch bioreactor,which was the highest reported titer for de novo production of scutellarin in microbes.Our results represent a solid basis for further production of natural products on unconventional yeasts and have a potential of industrial implementation. | Yina Wang Xiaonan Liu Bihuan Chen Wei Liu Zhaokuan Guo Xiangyu Liu Xiaoxi Zhu Jiayu Liu Jin Zhang Jing Li Lei Zhang Yadi Gao Guanghui Zhang Yan Wang MIqbal Choudhary Shengchao Yang Huifeng Jiang | 2022 | Synthetic and Systems Biotechnology2022，7，3： | 1 |
| 6 | SIRT3-SOD2-mROS-dependent autophagy in cadmium-induced hepatotoxicity and salvage by melatonin显示文摘 | Huifeng Pi Shangcheng Xu Russel J Reiter Pan Guo Lei Zhang Yuming Li Min Li Zhenwang Cao Li Tian Jia Xie Ruiqi Zhang Mindi He Yonghui Lu Chuan Liu Weixia Duan Zhengping Yu Zhou Zhou | 2015 | Autophagy2015，，7： | 1 |
| 7 | Surface modification of mesoporous silica nanoparticle with 4-triethoxysilylaniline to enhance seawater desalination properties of thin-film nanocomposite reverse osmosis membranes显示文摘Mesoporous silica nanoparticles(MSN),with higher water permeability than NaA zeolite,were used to fabricate thin-film nanocomposite(TFN)reverse osmosis(RO)membranes.However,only aminoalkyl-modified MSN and low-pressure(less than 2.1 MPa)RO membrane were investigated.In this study,aminophenyl-modified MSN(AMSN)were synthesized and used to fabricate high-pressure(5.52 MPa)RO membranes.With the increasing of AMSN dosage,the crosslinking degree of the aromatic polyamide decreased,while the hydrophilicity of the membranes increased.The membrane morphology was maintained to show a ridge-and-valley structure,with only a slight increase in membrane surface roughness.At the optimum conditions(AMSN dosage of 0.25 g/L),when compared with the pure polyamide RO membrane,the water flux of the TFN RO membrane(55.67 L/m^2/h)was increased by about 21.6%,while NaCl rejection(98.97%)was slightly decreased by only 0.29%.However,the water flux of the membranes was much lower than expected.We considered that the enhancement of RO membrane permeability is attributed to the reduction of the effective thickness of the PA layer. | Jian Wang Qun Wang Xueli Gao Xinxia Tian Yangyang Wei Zhen Cao Chungang Guo Huifeng Zhang Zhun Ma Yushan Zhang | 2020 | Frontiers of Environmental Science & Engineering2020，14，1： | 1 |
| 8 | Spectral Absorption Gas Sensor Based on Anti-Resonant Reflecting Optical Waveguide显示文摘空气硅石微观结构光纤维基于反反响的思考光波导(箭头) ,原则被用来发展一光谱吸收气体传感器。箭头纤维有一个空气核心和空气 cladding 层。有一段 725 公里的箭头纤维被用来构造一个察觉到的系统检测乙炔气体。气体从纤维的一结束被注入纤维。传播系列用一个光光谱分析器被收集。结果显示系统能检测不同集中的气体并且有好系统线性。系统的反应时间是大约 200 s。 | Haihu YU Yu ZHENG Huiyong GUO Beibei CAO Huifeng WEI | 2014 | Photonic Sensors2014，4，2： | 1 |
| 9 | Controlled preparation and self-assembly of NdVO_4 nanocrystals显示文摘Phase-pure t-NdVO_4 nanocrystals with different shapes have been synthesized by facile and repeatable hydrothermal methods. The as-synthesized t-NdVO_4 nanoparticles were characterized by various techniques of X-ray diffraction(XRD). scanning electron microscope(SEM) and transmission electron microscope(TEM). The growth process and assembly behavior of t-NdVO_4 nanorod arrays were investigated. The results show that the morphology of t-NdV04 nanocrystals is greatly related to the pH value of precursor solution and that strong basic solution is not in favor of the formation of t-NdVO_4 nanoparticles. Due to the strong adhesive action and stabilization of OH^-ions to some crystal faces of NdVO_4, neodymium vanadate crystallite grows into oriented short nanorods and then into nanorod arrays. The shape, crystalline and dimension of NdVO_4 nanocrystals can be effectively governed in our work. | Li Tian Yan Li Huifeng Wang Shanmin Chen Jinjing Wang Zhen Guo Qiang Liu Qi Luo Yingjie Li Fafa Wu | 2018 | Journal of Rare Earths2018，36，2： | 1 |
| 10 | Nucleotide Recognition by a Guanidinocalixarene Receptor in Aqueous Solution显示文摘Nucleotides participate in various physiological processes through their supramolecular interactions with biomolecules.Therefore,the molecular recognition of nucleotides became an important topic in supramolecular chemistry and exhibited many biomedical applications.Guanidinocalixarenes showed very strong binding affinities towards nucleotides,even reaching the nanomolar level.In this work,we systematically determined the binding constants between a typical guanidinocalixarene(guanidinium-modified calix[5]arene,GC5A)and various nucleotides and revealed the driving forces behind the molecular recognition using theoretical calculations.The electrostatic interactions and hydrogen bonding provided by the phosphate groups of the nucleotides dominated the binding between the nucleotides and GC5A.The lower rim alkyl chains and the skeleton of GC5A provide preorganized cavity and upper guanidinium groups.The difference in the type of nucleobase is also attributed to the different binding affinities.This work provides insight into the molecular recognition of nucleotides and facilitates the development of new supramolecular hosts for nucleotides and related biological applications. | GENG Wenchao ZHENG Zhe JIANG Huifeng GUO Dongsheng | 2023 | Chemical Research in Chinese Universities2023，39，1： | 0 |
| 11 | Investigation on the radioactivity levels of seawater,sediments,and biota in Daya Bay,China显示文摘Objective:To investigate the radioactivity levels of seawater,sediments,and biota in the Daya Bay sea area,China,in order to establish the radioactivity baseline values,and provide basic data for the assessment of potential radiological risks that might result from the application of nuclear technology or human activities.Methods:Samples of seawater,sediments,and biota were collected from the Daya Bay sea area and analyzed.Their radioactivity baseline data were then compared with information from other regions in China and around the world reported in related literature.Results:For the seawater samples,the activity concentrations of natural radionuclide ^(40)K were 9.9-10.4 Bq/L,while ^(238)U,226Ra,^(210)Pb,^(137)Cs,and ^(110)Ag^(m) were below the minimum detectable activity(MDA).Regarding the sediment samples,the activity concentrations of ^(238)U,^(228)Ra,^(226)Ra,^(210)Pb,^(40)K,and ^(137)Cs were 38.1-40.4,49.1-53.7,32.6-38.6,59-95,590-650,and 0.48-0.88 Bq/(kg dry weight),respectively,while ^(110)Agm was below the MDA.For the marine shrimps in the biota samples,the activity concentrations of ^(228)Ra,^(226)Ra,^(40)K,and ^(137)Cs were 1.14-2.75,0.17-0.43,63-76,and 0.038-0.045 Bq/(kg wet weight),respectively,while ^(238)U,^(210)Pb,and ^(110)Agm were all below the MDA.Furthermore,for the marine fishes in the biota samples,the activity concentrations of ^(228)Ra,^(226)Ra,^(210)Pb,^(40)K,and ^(137)Cs were 2.1-19.7,0.32-3.78,<2.2-2.8,59-70,and<0.007-0.026 Bq/(kg wet weight),respectively,while ^(238)U and ^(110)Ag^(m) were all below the MDA.^(228)Ra was found to be concentrated in Osteomugil ophuyseni with 19.7 Bq/(kg wet weight).Conclusions:The radioactivity levels of seawater and marine sediments in the Daya Bay sea area are within the range of the normal background values.Osteomugil ophuyseni exhibited higher concentrations of ^(228)Ra than other species in this study,while the other species in the biota show no significant difference in the radioactivity levels from data in relevant literature. | Fan Cui Honghui Huang Yi Shen Zhan Tan Pengxiang Qu Ming Dai Hongwei Yu Weixu Huang Zixiang Wu Huifeng Chen Weizhen Guo Yuxin Jia Yanbing Liu | 2023 | Radiation Medicine and Protection2023，4，3： | 0 |
| 12 | Alarm-Based Root Cause Analysis Based on Weighted Fault Propagation Topology for Distributed Information Network显示文摘A distributed information network with complex network structure always has a challenge of locating fault root causes.In this paper,we propose a novel root cause analysis(RCA)method by random walk on the weighted fault propagation graph.Different from other RCA methods,it mines effective features information related to root causes from offline alarms.Combined with the information,online alarms and graph relationship of network structure are used to construct a weighted graph.Thus,this approach does not require operational experience and can be widely applied in different distributed networks.The proposed method can be used in multiple fault location cases.The experiment results show the proposed approach achieves much better performance with 6%higher precision at least for root fault location,compared with three baseline methods.Besides,we explain how the optimal parameter’s value in the random walk algorithm influences RCA results. | LYU Xiaomeng CHEN Hao WU Zhenyu HAN Junhua GUO Huifeng | 2022 | ZTE Communications2022，20，3： | 0 |
| 13 | Effects of landscape fragmentation of plantation forests on carbon storage in the Loess Plateau,China显示文摘Tree plantation and forest restoration are the major strategies for enhancing terrestrial carbon sequestration and mitigating climate change.The Grain for Green Project in China has positively impacted global carbon sequestration and the trend towards fragmentation of plantation forests.Limited studies have been conducted on changes in plantation biomass and stand structure caused by fragmentation,and the effect of fragmentation on the carbon storage of plantation forests remains unclear.This study evaluated the differences between carbon storage and stand structure in black locust forests in fragmented and continuous landscape in the Ansai District,China and discussed the effects of ecological significance of four landscape indices on carbon storage and tree density.We used structural equation modelling to explore the direct and indirect effects of fragmentation,edge,abiotic factors,and stand structure on above-ground carbon storage.Diameter at breast height(DBH)in fragmented forests was 53.3%thicker,tree density was 40.9%lower,and carbon storage was 49.8%higher than those in continuous forests;for all given DBH>10 cm,the trees in fragmented forests were shorter than those in continuous forests.The patch area had a negative impact on carbon storage,i.e.,the higher the degree of fragmentation,the lower the density of the tree;and fragmentation and distance to edge(DTE)directly increased canopy coverage.However,canopy coverage directly decreased carbon storage,and fragmentation directly increased carbon storage and tree density.In non-commercial forests,fragmentation reduces the carbon storage potential of plantation,and the influence of patch area,edge,and patchy connection on plantation should be considered when follow-up trees are planted and for the plantation management.Thus,expanding the area of plantation patches,repairing the edges of complex-shaped patches,enhancing the connectivity of similar patches,and applying nutrients to plantation forests at regular intervals are recommended in fragmented areas of the Loess Plateau. | LEI Hangyu DUAN Dantong CHEN Yi GUO Huifeng LI Jiangtao LI Xiang | 2024 | Journal of Arid Land2024，16，2： | 0 |
| 14 | Impact of satellite blood culture on early diagnosis of sepsis显示文摘Background:The aim of this study was to assess whether satellite blood culture(SBC)can improve turnaround times,antibiotic switching,and patient prognosis,relative to laboratory blood culture(LBC).Methods:Patients with sepsis treated in the intensive care units(ICUs)of Henan Provincial People’s Hospital from February 5,2018 to January 19,2019 who met the inclusion criteria were recruited to the study and divided into the SBC group and LBC group according to different blood culture methods.Patient demographics,blood culture,antibiotic adjustment,and prognosis data were collected and compared between the two groups.Results:A total of 204 blood culture sets from 52 ICU patients,including 100 from the medical microbiology LBC group and 104 from the SBC group,were analyzed in this study.There was no significant difference in the positive rates between the two groups.Time from specimen collection to incubation was significantly shorter in the SBC group than that in the LBC group(1.65 h vs.3.51 h,z=−4.09,P<0.001).The median time from specimen collection to notification of blood culture positivity was 24.83 h in the SBC group and 27.83 h in the LBC group.Median times from adjustment of antibiotics according to the first report were 26.05 h and 51.71 h in the SBC and LBC groups,respectively,while those according to the final report were 97.17 h and 111.45 h,respectively.Median ICU lengths of stay were 15.00 days and 17.00 days in the SBC and LBC groups,respectively,and median ICU lengths of stay were 18.00 days and 23.50 days,respectively.Mean hospitalization costs were 157.99 and 186.73 thousand yuan in the SBC and LBC groups,respectively.Conclusion:SBC can significantly reduce blood culture turnaround times;however,there were no significant differences between the two blood culture methods in initial reporting of positive cultures,time to adjustment of antibiotic therapy,or medical costs,despite a trend toward improvement. | Ziqi Guo Bo Guo Shanmei Wang Huifeng Zhang Wenxiao Zhang Bingyu Qin Huanzhang Shao | 2022 | Journal of Intensive Medicine2022，2，1： | 0 |
| 15 | Heating-induced aggregation control for efficient sequential-cast organic solar cells显示文摘The aggregation and morphology within the photoactive layer is of considerable significance to boost the power-conversion efficiency(PCE)of organic solar cells(OSCs).Herein,heating-induced aggregation control of nonfullerene acceptor BTPeC7 during sequential casting was demonstrated.The large aggregates of BTP-eC7 can be significantly reduced by sequential casting of BTP-eC7 hot solution on the D18 fibrillar layer,and further eliminated by sequential casting of BTP-eC7 hot solution on the D18 fibrillar layer heated on hot substrate,leading to stronger faceonπ–πstacking and appropriate phase separation within the photoactive layer to promote exciton dissociation and charge transfer.The maximum PCE of D18/BTPeC7 solar cells can be enhanced from 8.1%of room temperature casting to 15.9%of hot solution,hot-substrate casting,therefore demonstrates that heating-induced aggregation and sequential-casting strategies are a promising approach in improving the performance of OSCs employing nonfullerene acceptors with limited solubility or strong crystallization ability. | Donghui Li Chuanhang Guo Xue Zhang Baocai Du Pang Wang Shili Cheng Jinlong Cai Hui Wang Dan Liu Huifeng Yao Jianhui Hou Tao Wang | 2022 | Aggregate2022，3，3： | 0 |
| 16 | Effectiveness of Xiaoyao capsule(逍遥丸)on sleep disorders and mood disturbance in patients in recovery from coronavirus disease 2019:a randomized controlled trial显示文摘OBJECTIVE:To study the efficacy of Xiaoyao capsule(逍遥丸)in improving the clinical symptoms of sleep and mood disorders during recovery from coronavirus disease 2019(COVID-19).METHODS:The study cohort comprised 200 patients with sleep and mood disorders during recovery from COVID-19.Patients were randomized into the control group and the experimental group in a 1:1 ratio by blocked randomization.The patients received either Xiaoyao capsule(experimental group)or a placebo Xiaoyao capsule(control group)for 2 weeks.The improvements in the Traditional Chinese Medicine(TCM)syndrome scales,total effective rates,and disappearance rates of irritability,anxiety,and poor sleep were compared between the two groups.RESULTS:The TCM syndrome pattern scales,total effective rates,and disappearance rates of irritability,anxiety,and poor sleep did not significantly differ between the experimental group versus the control group in the full analysis set and the per protocol set after 1 and 2 weeks of treatment(P>0.05).CONCLUSIONS:Xiaoyao capsule do not significantly improve the clinical symptoms of sleep and mood disorders in patients in recovery from COVID-19. | YANG Cunqing LIAN Fengmei YANG Guiping HUANG Yufeng ZHANG Shuangbin WANG Jianghua ZHOU Jing GUO Dongqing SHEN Chuanyun YE Tiansong FU Aojie LI Xiaoli CHEN Le ZHANG Huifeng TU Qiyin WANG Ying YANG Wenzhe TONG Xiaolin BA Yuanming | 2023 | Journal of Traditional Chinese Medicine2023，43，2： | 0 |
| 17 | Non-fullerene acceptor pre-aggregates enable high efficiency pseudo-bulk heterojunction organic solar cells显示文摘Pseudo-bulk heterojunction(BHJ)fabricated by sequential casting of donor and acceptor layers has been recently demonstrated as a superior structure to prepare organic solar cells(OSCs)with enhanced efficiency compared to the conventional BHJ OSCs cast from a common solution of donors and acceptors.However,molecular diffusion and aggregation within the pseudo-BHJ layer bring great challenges to fully realize the advantage of pseudo-BHJ structure.Herein,a solution-incubated pre-aggregation strategy is employed to tune the nanoscale aggregates of non-fullerene acceptor(NFA)BTP-e C11 and N3 to substantially enhance device power-conversion efficiency(PCE).NFA pre-aggregates are incubated in solutions via aging or adding antisolvent,and then sequentially cast onto D18 fibrillar network,which then penetrate to form a pseudo-BHJ structure with appropriate domain sizes to ensure superior charge mobilities.While the conventional pseudo-BHJ OSCs obtain inferior PCEs below 17%compared with normal BHJ OSCs,NFA pre-aggregates help to achieve remarkable PCEs of 17.7%and 17.5%for D18/BTP-e C11 and D18/N3 pseudo-BHJ OSCs.This work demonstrates that the solution-incubated nanoscale pre-aggregation is an efficient approach to regulate molecular diffusion and aggregation to guarantee high performance pseudo-BHJ OSCs. | Donghui Li Chuanhang Guo Xue Zhang Baocai Du Cong Yu Pang Wang Shili Cheng Liang Wang Jinlong Cai Hui Wang Dan Liu Huifeng Yao Yanming Sun Jianhui Hou Tao Wang | 2022 | Science China Chemistry2022，65，2： | 0 |
| 18 | Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable oxygen evolution reaction显示文摘High-performance and stable electrocatalysts are vital for the oxygen evolution reaction(OER).Herein,via a one-pot hydrothermal method,Ni/Fe/V ternary layered double hydroxides(NiFeV-LDH)derived from Ni foam are fabricated to work as highly active and durable electrocatalysts for OER.By changing the feeding ratio of Fe and V salts,the prepared ternary hydroxides were optimized.At an Fe:V ratio of 0.5:0.5,NiFeV-LDH exhibits outstanding OER activity superior to that of the binary hydroxides,requiring overpotentials of 269 and 274 mV at 50 mA·cm^(−2)in the linear sweep voltammetry and sampled current voltammetry measurements,respectively.Importantly,NiFeV-LDH shows extraordinary long-term stability(≥75 h)at an extremely high current density of 200 mA·cm^(−2).In contrast,the binary hydroxides present quick decay at 200 mA·cm^(−2)or even reduced current densities(150 and 100 mA·cm^(−2)).The outstanding OER performance of NiFeV-LDH benefits from the synergistic effect of V and Fe while doping the third metal into bimetallic hydroxide layers:(a)Fe plays a crucial role as the active site;(b)electron-withdrawing V stabilizes the high valence state of Fe,thus accelerating the OER process;(c)V further offers great stabilization for the formed intermediate of FeOOH,thus achieving superior durability. | Lihong Chen Ruxin Deng Shaoshi Guo Zihuan Yu Huiqin Yao Zhenglong Wu Keren Shi Huifeng Li Shulan Ma | 2023 | Frontiers of Chemical Science and Engineering2023，17，1： | 0 |
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