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

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

Dalton Trans. 2022 Sep 26;51(37):14201-14206. doi: 10.1039/d2dt01879a.

Authors

Ruina Shi^{1

2}, Lixin Zhang^{1

2}, Tiantian Gao^{1

2}, Wenhao Lian¹, Kankan Liu^{2

3}, Xiaohua Zhao¹, Bing Li¹, Niping Chen¹, Wei Song^{1

2}

Affiliations

¹ School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China. serena@nuc.edu.cn.
² Shanxi Key Laboratory of High Performance Battery Materials and Devices, Taiyuan 030051, Shanxi, China.
³ School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China.

PMID: 36056654
DOI: 10.1039/d2dt01879a

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.