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Enhanced Aqueous Zinc-Ion Batteries Using 3D MoS 2 /Conductive Polymer Composite

Author

Listed:
  • Tongxin Jiang

    (Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
    Those authors contributed equally to this work.)

  • Sijie Li

    (China Institute of Atomic Energy, Beijing 102413, China
    Those authors contributed equally to this work.)

  • Zexiang Luo

    (Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China)

  • Xue Li

    (China Institute of Atomic Energy, Beijing 102413, China)

  • Lifeng Zhang

    (China Institute of Atomic Energy, Beijing 102413, China)

  • Haisheng San

    (Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China)

  • Xin Li

    (China Institute of Atomic Energy, Beijing 102413, China)

  • Yifei Ma

    (State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China)

Abstract

MoS 2 , a typical transition metal dichalcogenide, features a layered structure, multi-phase transition, and tunable band gap, which is a promising candidate for aqueous zinc-ion batteries (AZIBs). Recent studies have focused on the metastable 1T-MoS 2 phase, which exhibits superior electrical conductivity and electrochemical activity compared to the more stable 2H phase. Herein, a straightforward one-step hydrothermal method was used to synthesize three-dimensional MoS 2 /polymer composites (H-MoS 2 -PEDOT). Under acidic conditions, the polymerization and intercalation of EDOT molecules in the MoS 2 layers promote the phase transition from 2H to 1T, thereby enhancing its conductivity and electrochemical performance. Additionally, it was found that the intercalated PEDOT and small amounts of water molecules have contributed to enhancing Zn 2+ ion diffusion and cycle stability. As a result, AZIBs based on the H-MoS 2 -PEDOT composite deliver a high specific capacity of 173.6 mAh g −1 at 1 A g −1 , maintaining a specific capacity of 116 mAh g −1 and a capacity retention of 82.8% after 1000 cycles at 5 A g −1 .

Suggested Citation

  • Tongxin Jiang & Sijie Li & Zexiang Luo & Xue Li & Lifeng Zhang & Haisheng San & Xin Li & Yifei Ma, 2024. "Enhanced Aqueous Zinc-Ion Batteries Using 3D MoS 2 /Conductive Polymer Composite," Energies, MDPI, vol. 18(1), pages 1-11, December.
    • Handle: RePEc:gam:jeners:v:18:y:2024:i:1:p:34-:d:1553305
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    References listed on IDEAS

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    1. F. Degen & M. Winter & D. Bendig & J. Tübke, 2023. "Energy consumption of current and future production of lithium-ion and post lithium-ion battery cells," Nature Energy, Nature, vol. 8(11), pages 1284-1295, November.
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