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Oxygen-rich interface enables reversible stibium stripping/plating chemistry in aqueous alkaline batteries

Author

Listed:
  • Haozhe Zhang

    (Sun Yat-Sen University)

  • Qiyu Liu

    (Sun Yat-Sen University)

  • Dezhou Zheng

    (Wuyi University)

  • Fan Yang

    (Sun Yat-Sen University)

  • Xiaoqing Liu

    (Sun Yat-Sen University)

  • Xihong Lu

    (Sun Yat-Sen University)

Abstract

Aqueous alkaline batteries see bright future in renewable energy storage and utilization, but their practical application is greatly challenged by the unsatisfactory performance of anode materials. Herein, we demonstrate a latent Sb stripping/plating chemistry by constructing an oxygen-rich interface on carbon substrate, thus providing a decent anode candidate. The functional interface effectively lowers the nucleation overpotential of Sb and strengthens the absorption capability of the charge carriers (SbO2− ions). These two advantageous properties inhibit the occurrence of side reactions and thus enable highly reversible Sb stripping/plating. Consequently, the Sb anode delivers theoretical-value-close specific capacity (627.1 mA h g−1), high depth of discharge (95.0%) and maintains 92.4% coulombic efficiency over 1000 cycles. A robust aqueous NiCo2O4//Sb device with high energy density and prominent durability is also demonstrated. This work provides a train of thoughts for the development of aqueous alkaline batteries based on Sb chemistry.

Suggested Citation

  • Haozhe Zhang & Qiyu Liu & Dezhou Zheng & Fan Yang & Xiaoqing Liu & Xihong Lu, 2021. "Oxygen-rich interface enables reversible stibium stripping/plating chemistry in aqueous alkaline batteries," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20170-8
    DOI: 10.1038/s41467-020-20170-8
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