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| 1 | Rearrangement on surface structures by boride to enhanced cycle stability for LiNi0.80Co0.15Al0.05O2 cathode in lithium ion batteries显示文摘The side reaction between the active material and liquid-electrolyte cause structural damage and particle pulverization is one of the important factors leading to the capacity decay of LiNi0.80Co0.15Al0.05O2(NCA)materials in Li ion batteries(LIBs).Surface modification is an effective strategy for NCA cathodes,which could alleviate the degradation associated with surface processes.Herein,a surface structure rearrangement of NCA cathode secondary particles was reported by in-situ forming a solid electrolyte LiBO2.The LiBO2 is beneficial for alleviating the stress during charge/discharge process,thereby slowing down the rate of cracks formation in the secondary particles,which facilitates the Li+de-intercalation as well as prevents penetration of the liquid-electrolyte into the interior of the particles.As a result,the surface structure rearrangement NCA(RS-NCA)delivers a high discharge capacity of 202.5 m Ah g^-1 at 0.1 C,and exhibits excellent cycle stability with discharge capacity retaining 148 m Ah g^-1 after 200 cycles at 2 C.This surface structure rearrangement approach provides a new viewpoint in designing high-performance high-voltage LIBs. | Shubiao Xia Wenjin Huang Xiang Shen Jiaming Liu Feixiang Cheng Jian-Jun Liu Xiaofei Yang Hong Guo | 2020 | Journal of Energy Chemistry2020，29，6： | 3 |
| 2 | Defect engineering of high-loading single-atom catalysts for electrochemical carbon dioxide reduction显示文摘Electrochemical carbon dioxide reduction reaction(CO_(2)RR)provides an attractive approach to carbon capture and utilization for the production high-value-added products.However,CO_(2)RR still suffers from poor selectivity and low current density due to its sluggish kinetics and multitudinous reaction pathways.Single-atom catalysts(SACs)demonstrate outstanding activity,excellent selectivity,and remarkable atom utilization efficiency,which give impetus to the search for electrocatalytic processes aiming at high selectivity.There appears significant activity in the development of efficient SACs for CO_(2)RR,while the density of the atomic sites remains a considerable barrier to be overcome.To construct high-metal-loading SACs,aggregation must be prevented,and thus novel strategies are required.The key to creating high-density atomically dispersed sites is designing enough anchoring sites,normally defects,to stabilize the highly mobile separated metal atoms.In this review,we summarized the advances in developing high-loading SACs through defect engineering,with a focus on the synthesis strategies to achieve high atomic site loading.Finally,the future opportunities and challenges for CO_(2)RR in the area of high-loading single-atom electrocatalysts are also discussed. | Yang Li Zhenjiang He Feixiang Wu Shuangyin Wang Yi Cheng Sanping Jiang | 2023 | Materials Reports(Energy)2023，3，2： | 1 |
| 3 | An Experimental Study on the Production of Fulvic Acid from Brown Coal Using N-Mn-TiO_2 as a Catalyst and H_2O_2 or HNO_3 as an Oxidizer显示文摘[Objective] The study aimed to extract fulvic acid from brown coal using N-Mn-TiO2as a catalyst and H2O2or HNO3as an oxidizer.[Method]The effects of catalyst N-Mn-TiO2on the yield and structure of fulvic acid were studied,and the content of functional groups in fulvic acid was analyzed qualitatively and quantitatively.[Result]Two catalysts could improved the yield of fulvic acid,that is,catalyst 1( N∶ Mn∶ Ti =16∶0.001∶1,roasting temperature was 400 ℃) and catalyst 2( N∶ Mn∶ Ti =16∶ 0.001∶ 1,roasting temperature was 100 ℃) increased OFA yield by 10.69% and32.17% and NFA by 8.61% and 7.49% respectively.After the addition of catalysts,the content of total acid radicals in OFA changed little,and carboxyl content increased slightly,but phenolic hydroxyl content decreased.When HNO3was used as an oxidizer,the content of total acid radicals and phenolic hydroxyl in NFA decreased.In addition,the structure of OFA was different from that of NFA.[Conclusion]The research could provide scientific references for the development and application of brown coal in future. | Zhang Shuihua Yang Fen Cheng Feixiang | 2014 | Meteorological and Environmental Research2014，5，1： | 0 |
| 4 | Corrigendum to“Rearrangement on surface structures by boride to enhanced cycle stability for LiNi_(0.80)Co_(0.15)Al_(0.0)5O_(2) cathode in lithium ion batteries”[J.Energy.Chem.45(2020)110-118]显示文摘The authors regret that the printed version of the above article contained some errors.The funding number in acknowledgments of this paper was incorrectly marked,and we hope to correct it.We thank the National Natural Science Foundation of China(51764048,51703118 and 51474191),Yunnan Province Thousand Youth Talents Plan,the Application Basis Research Project of Yunnan Province Science and Technology Department(2017FD144)and Key Natural Science Foundation of Yunnan Province China(2018FA28)for providing the financial support. | Shubiao Xia Wenjin Huang Xiang Shen Jiaming Liu Feixiang Cheng Jian-Jun Liu Xiaofei Yang Hong Guo | 2022 | Journal of Energy Chemistry2022，31，8： | 0 |
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