Ternary-phase layered cathodes toward ultra-stable and high-rate sodium ion storage

Wen-Ji Yin ¹Pei-Dan Su ¹Qi Lu ²Xiao-Qiong Li ¹Ji-Ming Peng ³Teng-Fei Zhou ²Ge-Meng Liang ⁴Yu-Liang Cao ⁵Hong-Qiang Wang ¹Qing-Yu Li ¹Si-Jiang Hu¹

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作者信息

1. Guangxi Key Laboratory of Low Carbon Energy Materials,School of Chemistry and Pharmaceutical Sciences,Guangxi Normal University,Guilin 541004,China
2. Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China
3. Department of Chemistry and Pharmaceutical Sciences,Guilin Normal College,Guilin 541199,China;College of Chemistry and Chemical Engineering,Huanggang Normal University,Huanggang 438000,China
4. School of Chemical Engineering and Advanced Materials,The University of Adelaide,Adelaide 5005,Australia
5. Engineering Research Center of Organosilicon Compounds and Materials of Ministry of Education,College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China
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Abstract

With the shortage of lithium resources,sodium-ion batteries(SIBs)are considered one of the most promising candidates for lithium-ion batteries.P2-type and O3-type layered oxides are one of the few cathodes that can access high energy density.However,they usually exhibit structural change,capacity decay,and slow Na ion kinetic.Herein,we present layered ternary-phase cathodes with P2,P3 and O3 phases by a lattice doping strategy,which is demonstrated by X-ray diffraction(XRD)refinement.Combining the characteristics of P2,P3 and O3 phases,the layered composites show performance improvement during long-term battery cycling.In particular,Na0.7Li0.1Co0.3-Fe0.3Mn0.3O2(NLCFM)delivers a reversible capacity of 120.1 mAh·g-1 at 0.1C(1.0C=175 mA.g-1)with a superior capacity retention of 72.5％after 1000 cycles at 10.0C.This work offers insights into the development of advanced cathode materials for SIBs.

Key words

Sodium-ion battery/Cathode material/Layered oxides/Lattice doping/Mixed phase

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基金项目

Guangxi Natural Science Foundation(2021GXNSFDA075012)

National Natural Science Foundation of China(U20A20249)

National Natural Science Foundation of China(22169004)

Natural Science Fund of Huanggang Normal University for Young Scholars(2014019203)

Special Fund for Guangxi Distinguished Expert()

Innovation Project of Guangxi Graduate Education(JGY2022031)

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量59

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