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典型文献
Insight into the structural evolution and thermal behavior of LiNi0.8Co0.1Mn0.1O2 cathode under deep charge
文献摘要：
By virtue of the crucial effect of the crystal structure and transition metal (TM) redox evolution on the performance of LiNixCoyMnzO2 (NCM) cathode,systematical investigation is carried out to better under-stand the charge mechanism upon deep charging.Based on the results of X-ray diffraction and high-resolution transmission electron microscope,phase transformations existing on particle surface are pro-moted by high potential because of the deeper lithium vacancies,accompanied by more substantial structure instability.Soft X-ray absorption spectroscopy indicates that Ni acts as the major contributor to charge compensation while Co displays a remarkable redox activity over the deep charge range.The elevated integrated intensity of pre-edge in O K-edge spectra reveals the extensive amount of holes formed in O 2p orbitals and the enhanced hybridization of TM 3d-O 2p orbitals.Considering the close relationship between thermal behavior and structural evolution,the tendency of phase transitions and O2 release upon heating is accelerated by voltage rise,demonstrating the aggravated instability due to deeper Li utilization.Remaining Li contents in NCM are employed to estimate the amount of oxygen released in structural transformation and its detrimental effect on stability declares Li content-dependent characteristics.Furthermore,the extended Li vacancies,higher proportion of Ni4+ and stronger orbital hybridization are considered as three factors impeding the thermal stability of the highly-delithiated NCM.
文献关键词：
中图分类号：
[1] 医药、卫生（R） / 基础医学（R3） / 病理学（R36） / 病理过程（R364）
[2] 数理科学和化学（O） / 力学（O3） / 振动理论（O32） / 非线性振动（O322）
[3] 经济（F） / 工业经济（F4） / 中国工业经济（F42）
作者姓名：
Chen Liang;Lihua Jiang;Zesen Wei;Wenhua Zhang;Qingsong Wang;Jinhua Sun
作者机构：
State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230026,Anhui,China;National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230026,Anhui,China
文献出处：
能源化学
引用格式：
[1]Chen Liang;Lihua Jiang;Zesen Wei;Wenhua Zhang;Qingsong Wang;Jinhua Sun-.Insight into the structural evolution and thermal behavior of LiNi0.8Co0.1Mn0.1O2 cathode under deep charge)[J].能源化学,2022(02):424-432
A类：
LiNixCoyMnzO2,declares,delithiated
B类：
Insight,into,structural,evolution,thermal,behavior,LiNi0,8Co0,1Mn0,1O2,cathode,under,charge,By,virtue,crucial,effect,crystal,structure,metal,TM,redox,performance,NCM,systematical,investigation,carried,out,better,stand,mechanism,upon,charging,Based,results,ray,diffraction,resolution,transmission,electron,microscope,phase,transformations,existing,particle,surface,moted,by,potential,because,deeper,lithium,vacancies,accompanied,substantial,instability,Soft,absorption,spectroscopy,indicates,that,acts,major,contributor,compensation,while,displays,remarkable,activity,over,range,elevated,integrated,intensity,pre,edge,spectra,reveals,extensive,amount,holes,formed,2p,orbitals,enhanced,hybridization,3d,Considering,close,relationship,between,tendency,transitions,heating,accelerated,voltage,rise,demonstrating,aggravated,due,utilization,Remaining,contents,employed,estimate,oxygen,released,its,detrimental,dependent,characteristics,Furthermore,extended,higher,proportion,Ni4+,stronger,considered,three,factors,impeding,highly
AB值：
0.604096
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