期刊论文

Su, W;Wang, XF

英文

Materials Research Express

2053-1591

2023

10

12

10.1088/2053-1591/ad15c3

Project of Disaster Prevention and Mitigation Center of State Grid Hunan Electric Power Co., LTD [SGTYHT/21-JS-226]; Natural Science Key Foundation of Guangdong Province [2019B1515120056]; Natural Science Foundation of Sichuan [22NSFC0308]; Open funding of Material Corrosion and Protection Key Laboratory of Sichuan province [2021CL05]; Guangdong Basic and Applied Basic Research Foundation [2020A1515110818]; Innovation Team Project for Colleges and Universities of Guangdong Province [2023KCXTD030]

本校为其他机构

O3-type layered oxides are widely investigated as cathodes for Na-ion batteries (SIBs) due to their high theoretical capacities and splendid initial Coulombic efficiency. However, they suffer from fast capacity fading owing to the complicated phase transformations, especially in high cut-off voltage (>4 V). Herein, Ti and Co elements were simultaneously introduced to O3-Na(Ni0.3Fe0.2Mn0.5)(0.85)Ti0.1Co0.05O2 (NFMTC) cathode material, and the effects of Ti/Co co-doping on phase structure and electrochemical properties were analyzed in detail. The results reveal that Ti/Co co-doping can enhance ...