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| 1 | Cobalt single atom site catalysts with ultrahigh metal loading for enhanced aerobic oxidation of ethylbenzene显示文摘The oxidation of hydrocarbons to produce high value-added compounds(ketones or alcohols)using oxygen in air as the only oxidant is an efficient synthetic strategy from both environmental and economic views.Herein,we successfully synthesized cobalt single atom site catalysts(Co SACs)with high metal loading of 23.58 wt.%supported on carbon nitride(CN),which showed excellent catalytic properties for oxidation of ethylbenzene in air.Moreover,Co SACs show a much higher turn-over frequency(19.6 h^(−1))than other reported non-noble catalysts under the same condition.Comparatively,the as-obtained nanosized or homogenous Co catalysts are inert to this reaction.Co SACs also exhibit high selectivity(97%)and stability(unchanged after five runs)in this reaction.DFT calculations reveal that Co SACs show a low energy barrier in the first elementary step and a high resistance to water,which result in the robust catalytic performance for this reaction. | Yu Xiong Wenming Sun Yunhu Han Pingyu Xin Xusheng Zheng Wensheng Yan Juncai Dong Jian Zhang Dingsheng Wang Yadong Li | 2021 | Nano Research2021，14，7： | 20 |
| 2 | Tunable oxygen vacancy concentration in vanadium oxide as mass-produced cathode for aqueous zinc-ion batteries显示文摘Oxygen vacancy(Vö)is important in the modification of electrode for rechargeable batteries.However,due to the scarcity of suitable preparation strategy with controllable Vöincorporation,the impact of Vöconcentration on the electrochemical performances remains unclear.Thus,in this work,Vö-V_(2)O_(5)-PEDOT(VöVP)with tunable Vöconcentration is achieved via a spontaneous polymerization strategy,with the capability of mass-production.The introduction of poly(2,3-dihydrothieno-1,4-dioxin)(PEDOT)not only leads to the formation of Vöin V_(2)O_(5),but it also results in a larger interlayer spacing.The as-prepared Vö-V_(2)O_(5)-PEDOT-20.3%with Vöconcentration of 20.3%(denoted as VöVP-20)is able to exhibit high capacity of 449 mAh·g^(−1) at current density of 0.2 A·g^(−1),with excellent cyclic performance of 94.3% after 6,000 cycles.It is shown in the theoretical calculations that excessive Vöin V_(2)O_(5) will lead to an increase in the band gap,which inhibits the electrochemical kinetics and charge conductivity.This is further demonstrated in the experimental results as the electrochemical performance starts to decline when Vöconcentration increases beyond 20.3%.Thus,based on this work,scalable fabrication of high-performance electrode with tunable Vöconcentration can be achieved with the proposed strategy. | Yehong Du Xinyu Wang Juncai Sun | 2021 | Nano Research2021，14，3： | 4 |
| 3 | Mechanism of lithium insertion into NiSi_2 anode material for lithium ion batteries显示文摘As a promising high capacity anode material for lithium ion batteries, the lithium insertion performance and possible insertion mechanism of binary alloy of NiSi2 were discussed. The initial lithium insertion of crystal NiSi2 can reach up to 600 mAh·g-1, but large irreversible capacity occurrs simultaneously for serious structure transformation and the irreversible phase forms. XRD and XPS were employed to detect the crystal structure and composition changes produced by lithium insertion. The lithium insertion-extraction behavior of NiSi2 electrode is similar to that of silicon after the first discharge. The structure stability seems related to the non-stoichimometric Ni-Si compound formed by lithium insertion into NiSi2. | WEN Zhongsheng JI Shijun SUN Juncai TIAN Feng TIAN Rujin XIE Jingying | 2006 | Rare Metals2006，25，z1： | 2 |
| 4 | Surface stability and conductivity of a high Cr and Ni austenitic stainless steel plates for PEMFC显示文摘In order to use stainless steel as bipolar plate for PEMFC, electrochemical behavior of a high Cr and Ni austenitic stainless steel was studied in the solutions containing different concentration of H2SO4 and 2 mg·L-1 F-, and interfacial contact resistance was measured after corrosion tests. The experimental results show that the passive current density lowers with decreasing the concentration of H2SO4. The interfacial contact resistance between carbon paper and passive film formed in the simulated PEMFC environment is higher than the goal of bipolar plate for PEMFC. Surface conductivity should be further reduced by surface modification. | TIAN Rujin SUN Juncai WANG Jianli | 2006 | Rare Metals2006，25，z1： | 2 |
| 5 | Low pressure plasma arc source ion nitriding compared with glow-discharge plasma nitriding of stainless steel显示文摘 | Wang Liang Sun Juncai Xu Xiaolei | 2001 | Surface and Coatings Technology2001，145，： | 1 |
| 6 | 显示文摘 | Li Song Ji Shijun Sun Juncai | 2004 | J Functional Materials2004，35，3： | 1 |
| 7 | Web Resources for Microbial Data显示文摘There are multitudes of web resources that are quite useful for the microbial scientific research community. Here, we provide a brief introduction on some of the most notable microbial web resources and an evaluation of them based upon our own user experience. | Qinglan Sun Li Liu Linhuan Wu Wei Li Quanhe Liu Jianyuan Zhang Di Liu Juncai Ma | 2015 | Genomics, Proteomics & Bioinformatics2015，13，1： | 1 |
| 8 | Direct synthesis of tin spheres/nitrogen-doped porous carbon composite by self-formed template method for enhanced lithium storage显示文摘To inhibit the agglomeration of tin-based nanomaterials and simplify the complicated synthesis process,a facile and eco-friendly self-formed template method is reported to synthesize tin submicron spheres dispersed in nitrogen-doped porous carbon(Sn/NPC)by pyrolysis of a mixture of disodium stannous citrate and urea.The vital point of this strategy is the formation of Na_(2)CO_(3)templates during pyrolysis.This self-formed Na_(2)CO_(3)acts as porous templates to support the formation of NPC.The obtained NPC provides good electronic conductivity,ample defects,and more active sites.Serving as anode for Li-ion batteries,the Sn/NPC electrode obtains a stable discharge capacity of 674.1 mAh/g after 150 cycles at 0.1 A/g.Especially,a high discharge capacity of 331.2 mAh/g can be achieved after 1100 cycles at 3 A/g.Additionally,a full cell coupled with LiCoO_(2)as cathode yields a discharge capacity of 524.8 mAh/g after 150 cycles at 0.1 A/g.In-situ XRD is implemented to investigate the alloying/dealloying reaction mechanisms.Density functional theory calculation ulteriorly explicates that NPC heightens intrinsic electronic conductivity,and NPC especially pyrrolic-N and pyridinic-N doping facilitates the Li-adsorption ability.Climbing image nudged elastic band method reveals low Li~+diffusion energy barrier in presence of N atoms,which accounts for the terrific electrochemical properties of Sn/NPC electrode. | Kun Liu Jia-ao Wang Hongfei Zheng Xiaodong Sun Zhimo Yang Jianzong Man Xinyu Wang Juncai Sun | 2022 | Journal of Materials Science & Technology2022，，9： | 1 |
| 9 | Low pressure plasma arc source ion nitriding compared with glow-discharge plasma nitriding of stainless steel 显示文摘 | Wang Liang Sun Juncai Xu Xiaolei | 2001 | Surface and Coatings Technology2001，145，： | 1 |
| 10 | Composite silicon film with connected silicon nanowires for lithium ion batteries显示文摘 | Zhongsheng Wen Meikang Cheng Juncai Sun Liang Wang | 2010 | Electrochimica Acta2010，，1： | 1 |
| 11 | A new candidate as the cathode material for intermediate and low temperature SOFCs显示文摘In order to develop the new cathode materials suitable for intermediate and low temperature solid oxide fuel cells (IT/LTSOFCs), LaNi1-xFexO3 (x=0.4-0.8) (LNF) materials were synthesized using coprecipitation method. Their structures and morphologies were investigated by XRD and SEM, and their electronic conductivities at different temperatures were measured by dc four terminal method. Fuel cells were fabricated to evaluate the electrochemical properties of the LNF materials as cathodes at different temperatures. The performance of 450-497 mW·cm-2 was obtained in the temperature region of 580-650 ℃ for the LaNi0.2Fe0.8O3 cathode, and of 209-227 mW·cm-2 at 400-500 ℃ for the LaNi0.4Fe0.6O3. The excellent fuel cell performances indicate that the LNF materials are good cathodes for IT/LTSOFCs. | LI Song SUN Xueli WEN Zhongsheng SUN Juncai | 2006 | Rare Metals2006，25，z1： | 1 |
| 12 | Plain carbon steel bipolar plates for PEMFC显示文摘Bipolar plates are a multifunctional component of PEMFC. Comparing with the machined graphite and stainless steels, the plain carbon steel is a very cheap commercial metal material. In this paper, the possibility of applying the plain carbon steels in the bipolar plate for PEMFC was exploited. In order to improve the corrosion resistance of the low carbon steel in the PEMFCs′ environments, two surface modification processes was developed and then the electrochemical performances and interfacial contact resistance (ICR) of the surface modified plate of plain carbon steel were investigated. The results show that the surface modified steel plates have good corrosion resistance and relatively low contact resistance, and it may be a candidate material as bipolar plate of PEMFC. | WANG Jianli SUN Juncai TIAN Rujin XU Jing | 2006 | Rare Metals2006，25，z1： | 1 |
| 13 | Solid-state synthesis and electrochemical properties of SmVO_4 cathode materials for low temperature SOFCs显示文摘A new cathode material fabricated by solid state reaction method was reported. The SmVO4 powder was obtained by firing the mixture of Sm2O3 and V2O5 powders in the temperature range of 700-1200 ℃. Its structure was identified by X-ray diffraction method and the electrochemical properties of SmVO4 as cathodes for solid oxide fuel cells (SOFCs) were investigated in single unit cell at the temperature ranged from 450-550 ℃. The results of the single fuel cell unit show that the maximum current densities are 641, 797, 688 mA·cm-2 and the maximum power output are 165, 268, 303 mW·cm-2 and the open circuit voltage are 1.04, 0.96, 0.92 V at 450, 500 and 550 ℃, respectively. | SUN Xueli LI Song SUN Juncai | 2006 | Rare Metals2006，25，z1： | 1 |
| 14 | Effect of nitriding time on the nitrided layer of AISI 304 austenitic stainless steel显示文摘 | Wang Liang Ji Shijun Sun Juncai | 2006 | Surface and Coatings Technology2006，200，： | 1 |
| 15 | An effective strategy for dendrite free Li metal anodes:Nickel foam decorated with high lattice-matching CoN and CoF_(2) nanosheets for dense deposition显示文摘The notorious dendrite and infinite volume change seriously restrict the advancement of lithium metal anodes(LMAs),during the long-term process of stripping/plating.Herein,the nanosheets of metal fluoride(CoF_(2))and metal nitride(CoN)with magnificent lithiophilicity on the nickel(Ni)foam are designed as the“regulator”to uniform the Li plating and build stronger solid electrolyte interface(SEI)layer for dendrite free LMAs.The Ni foam offers abundant space to receive deposited Li metal.The CoN nanosheets can guarantee the fast transfer of electrons,which provides a stable interface of Li^(+)reduction.Moreover,the nanosheet structure with lithiophilicity would accelerate the move of Li+and decrease the nucleation barrier,due to the high lattice-matching of Li and CoN.Meanwhile,the CoF_(2) could increase the content of F(LiF)in the SEI layer,which enhances the strength and avoids the destruction of SEI layer.With the cooperation of CoN and CoF_(2),the composited anode(Li/NF@CNCF)exhibits ultra-long cycle performance(more than 1200 h)and fantastic structure stability at 1 mA·cm^(-2) with 1 mAh·cm^(-2).Based on the LiFePO_(4) and Li/NF@CNCF,the full cells deliver excellent specifical capacity and steady coulombic efficiency.The strategy contributes an effective approach to alleviate the issues of lithium metal anodes in the field of LMAs. | Wenlong Liu Jianzong Man Xiaodong Sun Ning Zhang Yehong Du Kun Liu Zhongsheng Wen Song Li Juncai Sun | 2024 | Nano Research2024，17，5： | 0 |
| 16 | A comprehensive review of natural products with anti-hypoxic activity显示文摘Natural products exhibit substantial impacts in the field of anti-hypoxic traetment.Hypoxia can cause altitude sickness and other negative effect on the body.Headache,coma,exhaustion,vomiting and,in severe cases,death are some of the clinical signs.Currently,hypoxia is no longer just a concern in plateau regions;it is also one of the issues that can not be ignored by urban residents.This review covered polysaccharides,alkaloids,saponins,flavonoids,peptides and traditional Chinese compound prescriptions as natural products to protect against hypoxia.The active ingredients,effectiveness and mechanisms were discussed.The related anti-hypoxic mechanisms involve increasing the hemoglobin(HB)content,glycogen content and adenosine triphosphate(ATP)content,removing excessive reactive oxygen species(ROS),reducing lipid peroxidation,regulating the levels of related enzymes in cells,protecting the structural and functional integrity of the mitochondria and regulating the expression of apoptosis-related genes.These comprehensive summaries are beneficial to anti-hypoxic research and provide useful information for the development of anti-hypoxic products. | LIU Juncai GE Zhen JIANG Xiao ZHANG Jingjing SUN Jianan MAO Xiangzhao | 2023 | Chinese Journal of Natural Medicines2023，21，7： | 0 |
| 17 | Experimental and simulation research on hollow AZ31 magnesium alloy three-channel joint by hot extrusion forming with sand mandrel显示文摘Magnesium alloy is one of the lightest metal structural materials.The weight is further reduced through the hollow structure.However,the hollow structure is easily damaged during processing.In order to maintain the hollow structure and to transfer the stresses during the high temperature deformation,the sand mandrel is proposed.In this paper,the hollow AZ31 magnesium alloy three-channel joint is studied by hot extrusion forming.Sand as one of solid granule medium is used to fill the hollow magnesium alloy.The extrusion temperatures are 230℃ and 300℃,respectively.The process parameters(die angle,temperature,bottom thickness,sidewall thickness,edge-to-middle ratio in bottom,bottom shape)of the hollow magnesium alloy are analyzed based on the results of experiments and the finite element method.The results are shown that the formability of the hollow magnesium alloy will be much better when the ratio of sidewall thickness to the bottom thickness is 1:1.5.Also when edge-to-middle ratio in bottom is about 1:1.5,a better forming product can be received.The best bottom shape in these experiments will be convex based on the forming results.The grain will be refined obviously after the extrusion.Also the microstructures will be shown as streamlines.And these lines will be well agreement with the mold in the corner. | Shi Shengnan Wang Hongyu Teng Fei Jiang Lei Sun Juncai Sun Jie Zhang Shunhu | 2024 | Journal of Magnesium and Alloys2024，12，1： | 0 |
| 18 | Electrochemical characteristics of ternary and quadruple lithium silicon nitrides as anode material for lithium ion batteries:the influence of precursors显示文摘为有不同先锋的锂离子电池的第三、四倍的锂硅氮化物阳极材料被高精力的球 milling 的简单过程准备。高能力和优秀 cyclability 被获得。产品的电气化学的表演的先锋介绍的影响被调查。这研究表明锂硅氮化物的电气化学的表演能被做 O 显著地提高。四倍的锂硅氮化物的 cyclability 能被控制先锋的介绍数量显著地优化。它是可能的为对合成在宽电压以内被用作一个电容赔偿者截止窗户。 | WEN Zhongsheng TIAN Feng SUN Juncai JI Shijun XIE Jingying | 2008 | Rare Metals2008，27，2： | 0 |
| 19 | Surface Molecular Encapsulation with Cyclodextrin in Promoting the Activity and Stability of Fe Single-Atom Catalyst for Oxygen Reduction Reaction显示文摘Fe single-atom catalysts(Fe-SACs)have been extensively studied as a highly efficient electrocatalyst toward the oxygen reduction reaction(ORR).Nonetheless,they suffer from stability issue induced by dissolution of Fe metal center and the OH^(−)blocking.Herein,a surface molecular engineering strategy is developed by usingβ-cyclodextrins(CDs)as a localized molecular encapsulation.The CD-modified Fe-SAC(Fe-SNC-β-CD)shows obviously improved activity toward the ORR with 0.90 V,4.10 and 4.09 mA cm^(-2)for E_(1/2),J_(0)and Jk0.9,respectively.Meanwhile,the Fe-SNC-β-CD shows the excellent long-term stability against aggressive stress and the poisoning.It is confirmed through electrochemical investigation that modification ofβ-CD can,on one hand,regulate the atomic Fe coordination chemistry through the interaction between the CD and FeN_(x) moiety,while on the other mitigate the strong adsorption of OH^(−)and function as protective barrier against the poisoning molecules leading to enhanced ORR activity and stability for the Fe-SACs.The molecular encapsulation strategy demonstrates the uniqueness of post-pyrolysis surface molecular engineering for the design of single-atom catalyst. | Changli Chen Haijing Li Jingzhao Chen Dong Li Wenxing Chen Juncai Dong Mengru Sun Yujing Li | 2023 | Energy & Environmental Materials2023，6，2： | 0 |
| 20 | The monkey microbial biobank brings previously uncultivated bioresources for nonhuman primate and human gut microbiomes显示文摘Impact statement Nonhuman primates(NHPs)such as monkeys are the closest living relatives to humans and are the best available models for causative studies of human health and diseases.Gut microbiomes are intensively involved in host health.In this study,by large-scale cultivation of microbes from fecal samples of monkeys,we obtained previously uncultured bacterial species and constructed a Macaca fascicularis Gut Microbial Biobank(MfGMB).The MfGMB consisted of 250 strains that represent 97 species of 63 genera,25 families,and 4 phyla.The information of the 250 strains and the genomes of 97 cultured species are publicly accessible.The MfGMB represented nearly 50% of core gut microbial compositions at the genus level and covered over 80% of the KO-based known gut microbiome functions of M.fascicularis.Data mining showed that the bacterial species in the MfGMB were prevalent not only in NHPs gut microbiomes but also in human gut microbiomes.This study will help the understanding and future investigations on how gut microbiomes interact with their mammalian hosts. | Danhua Li Chang Liu Rexiding Abuduaini Mengxuan Du Yujing Wang Haizhen Zhu Honghe Chen Nan Zhou Yuhua Xin Linhuan Wu Juncai Ma Yuguang Zhou Yong Lu Chengying Jiang Qiang Sun Shuang-Jiang Liu | 2022 | mLife2022，1，2： | 0 |
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