Construction of Macroporous Co2SnO4 with Hollow Skeletons as Anodes for Lithium-Ion Batteries

Jintian Wang; Junzhang Wang; Xingzhong Guo; Hui Yang

doi:10.3390/gels8050257

Construction of Macroporous Co₂SnO₄ with Hollow Skeletons as Anodes for Lithium-Ion Batteries

Gels. 2022 Apr 21;8(5):257. doi: 10.3390/gels8050257.

Authors

Jintian Wang¹, Junzhang Wang¹, Xingzhong Guo^{1

2}, Hui Yang^{1

2}

Affiliations

¹ State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
² Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China.

Abstract

Increasing the energy density of lithium-ion batteries (LIBs) can broaden their applications in energy storage but remains a formidable challenge. Herein, with polyacrylic acid (PAA) as phase separation agent, macroporous Co₂SnO₄ with hollow skeletons was prepared by sol-gel method combined with phase separation. As the anode of LIBs, the macroporous Co₂SnO₄ demonstrates high capacity retention (115.5% at 200 mA·g^-1 after 300 cycles), affording an ultrahigh specific capacity (921.8 mA h·g^-1 at 1 A·g^-1). The present contribution provides insight into engineering porous tin-based materials for energy storage.

Keywords: Co2SnO4; Li-ion battery; hollow skeleton macroporous structure; sol-gel method.

Abstract

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