Title:
LAYERED SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/093126
Kind Code:
A1
Abstract:
Disclosed are a layered sodium-ion battery positive electrode material, a preparation method therefor, and a use thereof. The chemical formula of the layered sodium-ion battery positive electrode material is NayCr1-xMxO2, wherein 0.1≤x≤0.3, 0.7≤y≤0.9, and M represents transition metal; and inert transition metal comprises Ru and Ti. According to the present application, the layered sodium-ion battery positive electrode material having the structure of NayCr1-xMxO2 is designed by doping the transition metal Ru and Ti; by means of the synergistic effect of Ru and Ti, the negative phase change of the layered sodium-ion battery positive electrode material can be inhibited, and the structural stability of the layered sodium-ion battery positive electrode material under a widened working electrochemical window is improved; and such a strategy can improve the electrochemical performance of batteries, achieve excellent capacity reversibility and excellent cycle stability, and has good application prospects.
Inventors:
XI KAIYING (CN)
ZHANG YANXIN (CN)
ZHAO ZEFENG (CN)
ZHANG YANXIN (CN)
ZHAO ZEFENG (CN)
Application Number:
PCT/CN2023/086087
Publication Date:
May 10, 2024
Filing Date:
April 04, 2023
Export Citation:
Assignee:
HENGDIAN GROUP DMEGC MAGNETICS CO LTD (CN)
International Classes:
H01M4/36
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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