Developing an abnormal high-Na-content P2-type layered oxide cathode with near-zero-strain for high-performance sodium-ion batteries

Author:

Hu Hai-Yan12,Li Jia-Yang2,Liu Yi-Feng2,Zhu Yan-Fang12,Li Hong-Wei2,Jia Xin-Bei12,Jian Zhuang-Chun12,Liu Han-Xiao12,Kong Ling-Yi12,Li Zhi-Qi12,Dong Hang-Hang2,Zhang Meng-Ke3,Qiu Lang3,Wang Jing-Qiang2ORCID,Chen Shuang-Qiang12ORCID,Wu Xiong-Wei4ORCID,Guo Xiao-Dong3ORCID,Xiao Yao12ORCID

Affiliation:

1. Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China

2. Wenzhou Key Laboratory of Sodium-Ion Batteries, Wenzhou University Technology Innovation Institute for Carbon Neutralization, Wenzhou, 325035, P. R. China

3. College of Chemical Engineering, Sichuan University, Chengdu, 610065, P. R. China

4. School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128, P. R. China

Abstract

A Mg-substituted abnormal P2-NaxTMO2 cathode material with a stoichiometric content of Na up to 1 was developed. Such ultrahigh Na content in the P2-type structure enables an absolute solid-solution reaction with near-zero-strain characteristics.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Zhejiang Province

China Scholarship Council

Ministry of Education Science and Technology Industry-University Cooperation and Education Project

Wenzhou University

Publisher

Royal Society of Chemistry (RSC)

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