04-07-2023 дата публикации
Номер: CN116387504A
Автор:
GUO HAO,
CHEN DONGFENG,
SUN KAI,
MA XIAOBAI,
GAO JIANXIANG,
LI ZHENGYAO,
JIAO XUESHENG,
LI TIANFU,
LI YUQING,
HAO LIJIE,
HU XUFENG,
WANG HONGLIANG,
TIAN GENGFANG
Принадлежит:
The chemical formula of the multi-element O3 type layered sodium-ion battery positive electrode material is NaxNiaCubFecMndTieMfO2, M is one or more than two of Li, Mg, Zn, Al, Co, Sn, V, Zr, La and Nb, 0.8 < = x < = 1, 0.15 < = a < = 0.35, 0.02 < = b < = 0.15, 0.02 < = c < = 0.2, 0.25 < = d < = 0.45, 0.1 < = e < = 0.3, and 0 lt; f < = 0.15, and a + b + c + d + e + f = 1. By utilizing the synergistic effect of various elements, various variable valence elements are added to maximize the capacity of the material, meanwhile, various inactive elements are selected to enhance the structural stability of the material, the content range of the elements is accurately controlled, and the prepared O3-type positive electrode material is used for preparing the sodium ion battery, has high specific capacity, excellent cycling stability and rate capability, and can be widely applied to the field of lithium ion batteries. Compared with a trial-and-error mode in which a single element is gradually replaced ...
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