典型文献
Unraveling transition-metal-mediated stability of spinel oxide via in situ neutron scattering
文献摘要：
The energy materials performance is intrinsically determined by structures from the average lattice structure to the atom arrangement,valence,and distribution of the containing transition metal(TM)ele-ments.Understanding the mechanism of the structure transition and atom rearrangement via synthesis or processing is key to expediting the exploration of excellent energy materials.In this work,in situ neu-tron scattering is employed to reveal the real-time structure evolution,including the TM-O bonds,lattice,TM valence and the migration of the high-voltage spinel cathode LiNi0.5Mn1.5O4.The transition-metal-mediated spinel destabilization under the annealing at the oxygen-deficient atmosphere is pinpointed.The formation of Mn3+is correlated to the TM migration activation,TM disordered rearrangement in the spinel,and the transition to a layered-rocksalt phase.The further TM interdiffusion and Mn2+reduc-tion are also revealed with multi-stage thermodynamics and kinetics.The mechanisms of phase transi-tion and atom migrations as functions of temperature,time and atmosphere present important guidance on the synthesis in various-valence element containing oxides.
文献关键词：
中图分类号：
作者姓名：
Yan Chen;Ke An
作者机构：
Neutron Scattering Division,Oak Ridge National Laboratory,Oak Ridge,TN 37831,USA
文献出处：
引用格式：
[1]Yan Chen;Ke An-.Unraveling transition-metal-mediated stability of spinel oxide via in situ neutron scattering)[J].能源化学,2022(05):60-70
A类：
expediting,Mn3+is,rocksalt,Mn2+reduc
B类：
Unraveling,transition,metal,mediated,stability,spinel,via,situ,neutron,scattering,energy,materials,performance,intrinsically,determined,by,structures,from,average,lattice,atom,valence,distribution,containing,TM,ments,Understanding,rearrangement,synthesis,processing,key,exploration,excellent,In,this,work,employed,real,evolution,including,bonds,high,voltage,cathode,LiNi0,5Mn1,5O4,destabilization,under,annealing,oxygen,deficient,atmosphere,pinpointed,formation,correlated,activation,disordered,layered,phase,further,interdiffusion,are,also,revealed,multi,stage,thermodynamics,kinetics,mechanisms,migrations,functions,temperature,present,important,guidance,various,element,oxides
AB值：
0.497264
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