Synthesis of heterostructured dual metal sulfides by a high-temperature mixing hydrothermal method as an ultra-high rate anode for Li-ion batteries

Abstract

In this research, a novel approach is reported to fabricate flower-like Cu2S/MoS2 microspheres anchored on graphene (Cu2S/MoS2/rGO) by using a high-temperature mixing hydrothermal method (HTMHM). In detail, molybdenum source and copper source precursor solutions are added into a self-made dual-chamber Teflon lined reactor, respectively, and then the Cu2S/MoS2/rGO heterostructure is successfully prepared under designed hydrothermal reaction conditions with the aid of an ingenious rotation process. The obtained graphene-wrapped Cu2S/MoS2/rGO composites exhibit fast carrier migration, good structural stability, and high Li+ accessibility, which leads to a glorious rate performance and cycling durability. The heterostructured Cu2S/MoS2/rGO composite shows excellent rate capability (406.6 mA h g−1 at 5 A g−1) and high cycling durability (607.2 mA h g−1 after 200 cycles at 0.5 A g−1 with a superior capacity retention of 97.4%). The Cu2S/MoS2/rGO composites with good electrochemical performance are able to be used as negative electrodes for next-generation lithium-ion batteries. This work also offers a novel way to engineer mixed metal sulfides for energy storage application.

Graphical abstract: Synthesis of heterostructured dual metal sulfides by a high-temperature mixing hydrothermal method as an ultra-high rate anode for Li-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
13 Apr 2022
Accepted
08 May 2022
First published
24 May 2022

CrystEngComm, 2022, Advance Article

Synthesis of heterostructured dual metal sulfides by a high-temperature mixing hydrothermal method as an ultra-high rate anode for Li-ion batteries

Y. Rao, K. Zhu, P. Liang, J. Zhang, H. Zheng, J. Wang, J. Liu, K. Yan and N. Bao, CrystEngComm, 2022, Advance Article , DOI: 10.1039/D2CE00518B

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