典型文献
Boosting the lithium-ion storage performance of perovskite SrxVO3-δ via Sr cation and O anion deficient engineering
文献摘要：
Perovskite SrVO3 has been investigated as a promising lithium storage anode where the V cation plays the role of the redox center,combining excellent cycle stability and safe operating potential versus Li metal plating,with limited capacity.Here,we demonstrate the possibility to boost the lithium storage proper-ties,by reducing the non-redox active Sr cation content and fine-tuning the O anion vacancies while maintaining a non-stoichiometric SrxVO3-δ perovskite structure.Theoretical investigations suggest that Sr vacancy can work as favorable Li+storage sites and preferential transport channels for guest Li+ions,contributing to the increased specific capacity and rate performance.In contrast,inducing O anion vacancy in SrxVO3-δcan improve rate performance while compromising the specific capacity.Our exper-imental results confirm the enhancement of specific capacities by fine adjusting the Sr and O vacancies,with a maximum capacity of 444 mAh g-1 achieved with Sr0.63VO3-δ,which is a 37％increase versus sto-ichiometric SrVO3.Although rich defects have been induced,SrxVO3-δ electrodes maintain a stable per-ovskite structure during cycling versus a LiFePO4 cathode,and the full-cell could achieve more than 6000 discharge/charge cycles with 80％capacity retention.This result highlights the possibility to use the cation defective-based engineering approach to design high-capacity perovskite oxide anode materials.
文献关键词：
中图分类号：
作者姓名：
Xiaolei Li;Zifeng Lin;Na Jin;Xiaojiao Yang;Lei Sun;Yuan Wang;Lei Xie;Xiping Chen;Li Lei;Patrick Rozier;Patrice Simon;Ying Liu
作者机构：
College of Materials Science and Engineering,Sichuan University,Chengdu 610065,China;Key Laboratory of Neutron Physics and Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics,Mianyang 621999,China;Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China;CIRIMAT,UMR CNRS 5085,Université Toulouse Ⅲ Paul Sabatier,Toulouse 31062,France;RS2E,Réseau Fran?ais sur le Stockage Electrochimique de l'Energie,FR CNRS 3459,Amiens Cedex 80039,France
文献出处：
引用格式：
[1]Xiaolei Li;Zifeng Lin;Na Jin;Xiaojiao Yang;Lei Sun;Yuan Wang;Lei Xie;Xiping Chen;Li Lei;Patrick Rozier;Patrice Simon;Ying Liu-.Boosting the lithium-ion storage performance of perovskite SrxVO3-δ via Sr cation and O anion deficient engineering)[J].科学通报（英文版）,2022(22):2305-2315
A类：
SrxVO3,Li+storage,63VO3,ichiometric
B类：
Boosting,lithium,performance,perovskite,via,cation,anion,deficient,engineering,Perovskite,SrVO3,has,been,investigated,anode,where,plays,role,redox,center,combining,excellent,stability,safe,operating,potential,versus,metal,plating,limited,capacity,Here,we,demonstrate,possibility,boost,proper,by,reducing,active,content,fine,tuning,vacancies,while,maintaining,stoichiometric,structure,Theoretical,investigations,suggest,that,vacancy,work,favorable,sites,preferential,transport,channels,guest,Li+ions,contributing,increased,specific,In,contrast,inducing,improve,compromising,Our,exper,imental,results,confirm,enhancement,capacities,adjusting,maximum,mAh,achieved,Sr0,which,Although,rich,defects,have,induced,electrodes,stable,during,cycling,LiFePO4,cathode,full,could,more,than,discharge,cycles,retention,This,highlights,use,defective,approach,design,oxide,materials
AB值：
0.54433
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