Conjugated layered and tunnel structure enables long-lifespan and high-rate sodium-ion battery cathodes

Author:

Gu Chenzhang123ORCID,Zhao Enyue3ORCID,Li Na34,Gao Kesheng3,Wu Kang34,Ran Peilin34,Fu Mengmeng12,Wu Qi12,Zhao Jinkui34,Wang Yinzhen12

Affiliation:

1. Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University 1 , 510006 Guangzhou, China

2. Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University 2 , 510006 Guangzhou, China

3. Songshan Lake Materials Laboratory 3 , 523808 Dongguan, China

4. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences 4 , 100190 Beijing, China

Abstract

A cathode material Na0.42Mn0.96Ti0.04O2 with conjugated layered and tunnel structures was synthesized via a convenient solid-state method. The designed conjugated structure enables superior electrochemical properties such as 93.9% capacity retention after 200 cycles at 1 C and excellent rate capability with a reversible capacity of 83.9 mAh g−1 at 20 C.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Guangdong Province

Guangdong Basic and Applied Basic Research Foundation

Large Scientific Facility Open Subject of Songshan Lake

Publisher

AIP Publishing

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