首站-论文投稿智能助手
典型文献
An analysis of F-doping in Li-rich cathodes
文献摘要:
Li-rich materials,due to their high capacity(>250 mAh·g-1),have recently been considered as an alternative to the current generation of cathode materials for Li-ion batteries(LIBs).However,their inferior cycling stability limits their practical applicability.Doping is a common technique to solve this problem.However,anion doping remains relatively underexplored.Fluorine(F)is one of the most effective anion dopants owning to the improved capacity,cycling stability,and rate performance in batteries.The explanations and experimental results,however,vary significantly from study to study.Herein,we find that bulk F-doping significantly improves both rate performance and cycling stability,likely driven by charge compensation and greater electronegativity.Additionally,bulk F-doping occasionally improves capacity via enhanced activation and occasionally decreases capacity by preventing activation from occurring.Surface F-doping has similar effects to bulk F-doping on capacity and stability,while significantly hindering the rate performance.Furthermore,the improvements in surface-doped materials do not appear to be a result of specific surface modification,and instead can be ascribed to the effect of fluorine on the near-surface bulk material.Greater understanding of fluo-rine's influence on activation,in particular,is required to unlock the full potential of synergistic cation/anion co-doping.
文献关键词:
作者姓名:
Trent Seaby;Tong-En Lin;Yu-Xiang Hu;Qing-Hong Yuan;Lian-Zhou Wang
作者机构:
Nanomaterials Centre,School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology,The University of Queensland,Brisbane QLD 4072,Australia;Key Laboratory of Advanced Functional Materials,Education Ministry of China,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China;Centre for Theoretical and Computational Molecular Science,Australian Institute for Bioengineering and Nanotechnology,The University of Queensland,Brisbane QLD 4072,Australia
引用格式:
[1]Trent Seaby;Tong-En Lin;Yu-Xiang Hu;Qing-Hong Yuan;Lian-Zhou Wang-.An analysis of F-doping in Li-rich cathodes)[J].稀有金属(英文版),2022(06):1771-1796
A类:
underexplored
B类:
An,analysis,doping,Li,rich,cathodes,materials,due,their,high,capacity,mAh,have,recently,been,considered,alternative,current,generation,batteries,LIBs,However,inferior,cycling,stability,limits,practical,applicability,Doping,common,technique,solve,this,problem,anion,remains,relatively,Fluorine,most,effective,dopants,owning,improved,rate,performance,explanations,experimental,results,however,vary,significantly,from,study,Herein,find,that,bulk,improves,both,likely,driven,by,charge,compensation,greater,electronegativity,Additionally,occasionally,via,enhanced,activation,decreases,preventing,occurring,Surface,has,similar,effects,while,hindering,Furthermore,improvements,surface,doped,not,appear,specific,modification,instead,ascribed,fluorine,near,Greater,understanding,influence,particular,required,unlock,full,potential,synergistic
AB值:
0.555153
相似文献
Revisiting the capacity-fading mechanism of P2-type sodium layered oxide cathode materials during high-voltage cycling
Meidan Jiang;Guannan Qian;Xiao-Zhen Liao;Zhouhong Ren;Qingyu Dong;Dechao Meng;Guijia Cui;Siqi Yuan;Sang-Jun Lee;Tian Qin;Xi Liu;Yanbin Shen;Yu-Shi He;Liwei Chen;Yijin Liu;Linsen Li;Zi-Feng Ma-Department of Chemical Engineering,Shanghai Electrochemical Energy Device Research Center(SEED),School of Chemistry and Chemical Engineering,Frontiers Science Center for Transformative Molecules,Shanghai Jiao Tong University,Shanghai 200240,China;Stanford Synchrotron Radiation Lightsource,SLAC National Accelerator Laboratory,Menlo Park,CA 94025,United States;In-Situ Center for Physical Sciences,School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Suzhou Institute of Nanotech and Nanobionics(SINANO),Chinese Academy of Sciences,Suzhou 215123,Jiangsu,China;Shanghai Jiao Tong University Sichuan Research Institute,Chengdu 610213,Sichuan,China
Enhancing structure and cycling stability of Ni-rich layered oxide cathodes at elevated temperatures via dual-function surface modification
Ying-De Huang;Han-Xin Wei;Pei-Yao Li;Yu-Hong Luo;Qing Wen;Ding-Hao Le;Zhen-Jiang He;Hai-Yan Wang;You-Gen Tang;Cheng Yan;Jing Mao;Ke-Hua Dai;Xia-Hui Zhang;Jun-Chao Zheng-School of Metallurgy and Environment,Central South University,Changsha 410083,Hunan,China;National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals,Central South University,Changsha 410083,Hunan,China;Engineering Research Center of the Ministry of Education for Advanced Battery Materials,Central South University,Changsha 410083,Hunan,China;Hunan Provincial Key Laboratory of Chemical Power Sources,College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,Hunan,China;School of Mechanical,Medical and Process Engineering,Queensland University of Technology,Brisbane 4001,Queensland,Australia;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,Henan,China;College of Chemistry,Tianjin Normal University,Tianjin 300387,China;School of Mechanical and Materials Engineering,Washington State University,Pullman 99164,Washington,USA
机标中图分类号,由域田数据科技根据网络公开资料自动分析生成,仅供学习研究参考。