Citation: Guolong Lu, Jingwen Zhang, Zhiwei Wang, Zhigui Wang, Yanhong Feng, Cejun Hu, Longchao Zhuo, Xijun Liu. Sulfur vacancy-rich MoS₂ anchored oxidized graphene as advanced catalysts for polysulfide-iodine redox flow battery[J]. Chinese Chemical Letters, ;2026, 37(10): 111650. doi: 10.1016/j.cclet.2025.111650 shu

Sulfur vacancy-rich MoS₂ anchored oxidized graphene as advanced catalysts for polysulfide-iodine redox flow battery

Guolong Lu ^{a, 1} ,
Jingwen Zhang ^{a, 1} ,
Zhiwei Wang ^{a, 1} ,
Zhigui Wang ^{a, *,} ,
Yanhong Feng ^a ,
Cejun Hu ^{b, *,} ,
Longchao Zhuo ^c ,
Xijun Liu ^{a, *,}

a.
MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
b.
College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
c.
School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China

1608250348@qq.com

cejun_hu@fzu.edu.cn

xjliu@gxu.edu.cn

Received Date: 11 June 2025
Revised Date: 15 July 2025
Accepted Date: 30 July 2025
Available Online: 30 July 2025

Figures(5)

Aqueous polysulfide/iodide redox flow batteries (SIRFBs) have been identified as a promising solution for scalable energy storage, exhibiting high energy density and cost-effectiveness, attracting considerable attention. Nonetheless, their practical applicability hindered by the suboptimal redox reaction kinetics, leading to constrained energy efficiency (EE) and power density. Herein, this study proposes a novel approach for coupling of graphene oxide with abundant sulfur vacancies in MoS₂ nanosheets (V_S-MoS₂@GO). The bifunctional catalysts enhancing the transformation of S²⁻/S_x²⁻ and I⁻/I₃⁻ redox couples while concomitantly improving the reaction kinetics. The experimental and theoretical calculation analyses elucidate that the GO bond with V_S-MoS₂ induces C-O-Mo and results in generating abundant sites, which attribute to the enhanced adsorption of crucial reaction intermediates and improved charge transfer. Consequently, the SIRFB derived notable EEs of 95.4%, 90.2%, and 75.6% at 10, 20, and 50 mA/cm² with 50% state of charge, respectively. Furthermore, these batteries exhibit remarkable power density (93.2 mW/cm²), ultralow overpotential (100 mV), and an extended cycling life that exceeds 500 cycles. This work presents an innovative perspective to design high-active electrode materials that have potential for broad application in sundry flow battery chemistry, which would facilitate technological breakthroughs and advancements in the field of RFB.
- Sulfur vacancies,
- Graphene oxide,
- Aqueous redox flow battery,
- Bond bridging,
- High energy efficiency
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Sulfur vacancy-rich MoS2 anchored oxidized graphene as advanced catalysts for polysulfide-iodine redox flow battery

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通讯作者: 陈斌, bchen63@163.com

Sulfur vacancy-rich MoS₂ anchored oxidized graphene as advanced catalysts for polysulfide-iodine redox flow battery