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Fast ion transport at solid–solid interfaces in hybrid battery anodes

Author

Listed:
  • Zhengyuan Tu

    (Cornell University)

  • Snehashis Choudhury

    (Cornell University)

  • Michael J. Zachman

    (Cornell University)

  • Shuya Wei

    (Cornell University)

  • Kaihang Zhang

    (Cornell University)

  • Lena F. Kourkoutis

    (Cornell University
    Cornell University)

  • Lynden A. Archer

    (Cornell University
    Cornell University)

Abstract

Carefully designed solid-electrolyte interphases are required for stable, reversible and efficient electrochemical energy storage in batteries. We report that hybrid battery anodes created by depositing an electrochemically active metal (for example, Sn, In or Si) on a reactive alkali metal electrode by a facile ion-exchange chemistry lead to very high exchange currents and stable long-term performance of electrochemical cells based on Li and Na electrodes. By means of direct visualization and ex situ electrodeposition studies, Sn–Li anodes are shown to be stable at 3 mA cm−2 and 3 mAh cm−2. Prototype full cells in which the hybrid anodes are paired with high-loading LiNi0.8Co0.15Al0.05O2(NCA) cathodes are also reported. As a second demonstration, we create and study Sn–Na hybrid anodes and show that they can be cycled stably for more than 1,700 hours with minimal voltage divergence. Charge storage at the hybrid anodes is reported to involve a combination of alloying and electrodeposition reactions.

Suggested Citation

  • Zhengyuan Tu & Snehashis Choudhury & Michael J. Zachman & Shuya Wei & Kaihang Zhang & Lena F. Kourkoutis & Lynden A. Archer, 2018. "Fast ion transport at solid–solid interfaces in hybrid battery anodes," Nature Energy, Nature, vol. 3(4), pages 310-316, April.
    • Handle: RePEc:nat:natene:v:3:y:2018:i:4:d:10.1038_s41560-018-0096-1
    DOI: 10.1038/s41560-018-0096-1
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    Cited by:

    1. Jiaqi Cao & Yuansheng Shi & Aosong Gao & Guangyuan Du & Muhtar Dilxat & Yongfei Zhang & Mohang Cai & Guoyu Qian & Xueyi Lu & Fangyan Xie & Yang Sun & Xia Lu, 2024. "Hierarchical Li electrochemistry using alloy-type anode for high-energy-density Li metal batteries," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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