Citation: Shixin SHI, Zhuohang LIU, Yuan SUN, Jingshen LI, Weixiang CHEN. Synthesis and electrochemical lithium storage performance of high-entropy NiCoSnZnFeS_x and reduced graphene oxide composite[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(9): 1984-1996. doi: 10.11862/CJIC.20250372 shu

Synthesis and electrochemical lithium storage performance of high-entropy NiCoSnZnFeS_x and reduced graphene oxide composite

Shixin SHI ^{1, #} ,
Zhuohang LIU ^{1, #} ,
Yuan SUN ² ,
Jingshen LI ¹ ,
Weixiang CHEN ^1,,

1.
Department of Chemistry, Zhejiang University, Hangzhou 310058, China
2.
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China

Corresponding author: Weixiang CHEN, weixiangchen@zju.edu.cn
Received Date: 13 December 2025
Revised Date: 27 July 2026

Figures(8)

High entropy multicomponent metal sulfide (NiCoSnZnFeS_x) and reduced graphene oxide (rGO) composite (NiCoSnZnFeS_x-rGO) was prepared by a one-step hydrothermal reaction method. Its microstructure, morphology, and electrochemical lithium storage performance were characterized and investigated. It was found that NiCoSnZnFeS_x nanoparticles exhibited the hybrid nanocrystalline structure and were well dispersed on the surface of rGO. As the conversion-type electrode material, NiCoSnZnFeS_x-rGO composite possessed multiple redox pairs for electrochemical lithium storage and could undergo lithiation/delithiation in sequence, which effectively mitigated volume changes of active material during charge/discharge cycles, thereby singnificantly enhancing the cyclic stability. The diversity and interaction of constituent elements in the high-entropy composite improved the electronic conductivity and ionic diffusion, which could enhance high-rate capability. Therefore, the NiCoSnZnFeS_x-rGO composite exhibited the excellent electrochemical lithium storage performance. It could deliver an initial reversible specific capacity as high as 1 230 mAh·g^-1 at the current density of 0.1 A·g^-1 and exhibited good high-rate capability of 869 mAh·g^-1 at 2.0 A·g^-1. After 900 cycles, it still maintained a reversible specific capacity of 996 mAh·g^-1 at 1.0 A·g^-1, demonstrating its stable long-cycle performance. The excellent electrochemical lithium storage performance of NiCoSnZnFeS_x-rGO is mainly due to that the diversity of its constituent elements and the synergistic effect of different metal sulfides significantly enhance the conversion reaction reversibility of electrochemical lithium storage and the cyclic stability.
- electrochemical lithium storage,
- NiCoSnZnFeS_x,
- reduced graphene oxides,
- high entropy,
- hydrothermal reaction
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis and electrochemical lithium storage performance of high-entropy NiCoSnZnFeSx and reduced graphene oxide composite

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通讯作者: 陈斌, bchen63@163.com

Synthesis and electrochemical lithium storage performance of high-entropy NiCoSnZnFeS_x and reduced graphene oxide composite