Multi-element doped hexagonal sheet Ni/Mn-based layered oxide with ZrO2 surface modification for sodium ion batteries cathode with high capacity and good cycle/air stability

被引：8

作者：

Huang, Yaoliang ^{[1
]}

Zhang, Yunru ^{[1
]}

Yuan, Guizhi ^{[1
]}

Ruan, Dingshan ^{[2
]}

Zhang, Xinlong ^{[3
]}

Liu, Weijian ^{[2
]}

Zhang, Zhongshuai ^{[1
]}

Yu, Xiaoyuan ^{[1
]}

机构：

[1] South China Agr Univ, Coll Mat & Energy, Key Lab Biobased Mat & Energy, Minist Educ, Guangzhou 510642, Guangdong, Peoples R China

[2] Guangdong Brunp Recycling Technol Co Ltd, Foshan 528244, Guangdong, Peoples R China

[3] Nantong Ruixiang New Mat Co Ltd, Nantong 226000, Jiangsu, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2024年 / 653卷

基金：

中国国家自然科学基金;

关键词：

Sodium ion battery; Multi-element doping; Surface modification; Cathode materials; Electrochemical performance; STORAGE;

D O I：

10.1016/j.apsusc.2024.159395

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ni/Mn-based layered oxides have been widely studied for sodium ion battery cathode because of high capacity and simple preparation. However, its application has been restricted owing to unstable structure and poor cycling performance. Herein, the multi-element doped hexagonal sheet Ni/Mn-based layered oxide with ZrO2 surface modification O3-NaNi0.3Mn0.5-xFe0.1Cu0.1ZrxO2@ZrO2 (NFMCZ-x) cathode materials have been successfully synthesize by high temperature calcination method accompanied by ball milling activation. XRD refinement results show Zr4+ substitution of Mn3+ can increase interlayer distance of sodium layer. Benefiting from the synergetic effect of multi-element doping and ZrO2 surface modification, the optimized NFMCZ-0.03 sample exhibits a higher discharge capacity of 178 mAh/g at 0.1C and good capacity retention (77 % after 50 cycles at 2C). Furthermore, NFMCZ-0.03 has an excellent air stability with a capacity retention rate of 86 % during 50 cycles at 1C after being exposed in the air for 20 days. The ex-situ XRD results of NMFC at different charge/ discharge voltages show Zr4+ doping can suppress O3 + P3 ''-O3 '-O3 + P3 '' phase transition during charge/ discharge process. These results confirm that synergistic effect of multi-doping combined with surface modification can improve electrochemical performance of layered oxides cathodes, which provides a research idea for development of Ni/Mn-based layered oxides cathodes for sodium-ion batteries.

引用

页数：10