High-performance flexible SnO2 anode boosted by an N-doped graphite coating layer for lithium-ion and sodium-ion batteries

Wanming Teng; Zhenbao Lu; Xuelei Li; Xiaohu wang; Jun Liu; Junhui Dong; Ding Nan

Electrochemistry Communications (Aug 2022)

High-performance flexible SnO2 anode boosted by an N-doped graphite coating layer for lithium-ion and sodium-ion batteries

Wanming Teng,
Zhenbao Lu,
Xuelei Li,
Xiaohu wang,
Jun Liu,
Junhui Dong,
Ding Nan

Affiliations

Wanming Teng: College of Chemistry and Chemical Engineering, Inner Mongolia University, West University Street 235, Hohhot, 010021, China; Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Zhenbao Lu: Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Xuelei Li: Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Xiaohu wang: Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China; Rising Graphite Applied Technology Research Institute, Chinese Graphite Industrial Park-Xinghe, Ulanqab, Inner Mongolia, 013650, China
Jun Liu: Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China; Corresponding authors.
Junhui Dong: Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Ding Nan: College of Chemistry and Chemical Engineering, Inner Mongolia University, West University Street 235, Hohhot, 010021, China; Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China; Corresponding authors.

Journal volume & issue: Vol. 141
p. 107345

Abstract

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Tin dioxide (SnO2) with multiple electron transport is considered as a potential substitute for graphite due to these advantages of natural abundance, environmental friendliness, and high theoretical capacity. However, the ineluctable volume change and structural crushing limit its practical application. Hence, SnO2 is coated by an N-doped graphite layer to form the flexible composite anode (SnO2@NG), which can provide a conductive network, increase the electronic conductivity, and effectively mitigate the irreversible volume expansion/contraction during the circulation process. Furthermore, the SnO2@NG anode shows a high specific capacity and stable cycle performance in lithium-ion batteries (677.7 mAh g−1 after 100 cycles) and sodium-ion batteries (169.7 mAh g−1 after 100 cycles). This excellent electrochemical performance illustrates that SnO2@NG has broad application prospects for high-performance energy storage systems.

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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