The thermal expansion exfoliation technology and lithium promoter assistant afford CuOx/graphene as a high-performance anode for lithium-ion batteries

Ruina Shi; Lixin Zhang; Tiantian Gao; Wenhao Lian; Kankan Liu; Xiaohua Zhao; Bing Li; Niping Chen; Wei Song

doi:10.1039/D2DT01879A

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The thermal expansion exfoliation technology and lithium promoter assistant afford CuO_x/graphene as a high-performance anode for lithium-ion batteries†

Ruina Shi,

*^ab Lixin Zhang,^ab Tiantian Gao,^ab Wenhao Lian,^a Kankan Liu,

^bc Xiaohua Zhao,^a Bing Li,^a Niping Chen^a and Wei Song

*^ab

Author affiliations

* Corresponding authors

^a School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China
E-mail: serena@nuc.edu.cn, 20200136@nuc.edu.cn

^b Shanxi Key Laboratory of High Performance Battery Materials and Devices, Taiyuan 030051, Shanxi, China

^c School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China

Abstract

The ability to rationally design a copper oxide anode with superior rate performance that possesses an ultra-small particle size is highly desirable for lithium-ion batteries (LIBs). Herein, the rapid and effective thermal expansion exfoliation technology was employed to synthesize ultra-small CuO_x nanoparticles (∼2.7 nm) uniformly dispersed on graphite oxide after popping (CuO_x/Li-PGO), in which the addition of lithium promoted the exfoliation process to obtain an enlarged specific surface area and efficient transfer ability of PGO. The CuO_x/Li-PGO electrode achieved a reversible capacity as high as 512.1 mA h g⁻¹ under 2.0 A g⁻¹ after 1000 cycles, demonstrating superior rate performance and cycling stability.

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Article information

DOI: https://doi.org/10.1039/D2DT01879A
Article type: Paper
Submitted: 14 Jun 2022
Accepted: 23 Aug 2022
First published: 24 Aug 2022

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Dalton Trans., 2022,51, 14201-14206

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The thermal expansion exfoliation technology and lithium promoter assistant afford CuO_x/graphene as a high-performance anode for lithium-ion batteries

R. Shi, L. Zhang, T. Gao, W. Lian, K. Liu, X. Zhao, B. Li, N. Chen and W. Song, Dalton Trans., 2022, 51, 14201 DOI: 10.1039/D2DT01879A

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