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Construction of Dynamic Alloy Interface for Uniform Li Deposition in Li-Metal Batteries
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  • Guang He,
  • Qingwen Li,
  • Ziheng Zhang,
  • Zelong Yang,
  • Yulu Liu,
  • Jinjie Chen
Guang He
Tianjin University of Technology

Corresponding Author:heguang@email.tjut.edu.cn

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Qingwen Li
Tianjin University of Technology
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Ziheng Zhang
Tianjin University of Technology
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Zelong Yang
Tianneng Co. Ltd
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Yulu Liu
Tianjin University of Technology
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Jinjie Chen
Tianneng Co. Ltd
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Abstract

It is well accepted that a lithiophilic interface can effectively regulate Li deposition behaviors, but the influence of the lithiophilic interface is gradually diminished upon continuous Li deposition that completely isolates Li from the lithiophilic metals. Herein, we perform in-depth studies on the creation of dynamic alloy interface upon Li deposition, arising from the exceptionally high diffusion coefficient of Hg in the amalgam solid solution. As a comparison, other metals such as Au, Ag and Zn have typical diffusion coefficients of 10-20 orders of magnitude lower than for Hg in the similar solid solution phases. This difference induced compact Li deposition pattern with an amalgam substrate even with a high areal capacity of 55 mAh cm-2. This finding provides new insight into the rational design of Li anode substrate for the stable cycling of Li metal batteries.
29 Jan 2023Submitted to Energy & Environmental Materials
01 Feb 2023Submission Checks Completed
01 Feb 2023Assigned to Editor
02 Feb 2023Review(s) Completed, Editorial Evaluation Pending
02 Feb 2023Reviewer(s) Assigned
16 Feb 2023Editorial Decision: Revise Major
05 Mar 20231st Revision Received
06 Mar 2023Submission Checks Completed
06 Mar 2023Assigned to Editor
06 Mar 2023Review(s) Completed, Editorial Evaluation Pending
06 Mar 2023Reviewer(s) Assigned
12 Mar 2023Editorial Decision: Revise Minor
13 Mar 20232nd Revision Received
13 Mar 2023Submission Checks Completed
13 Mar 2023Assigned to Editor
13 Mar 2023Review(s) Completed, Editorial Evaluation Pending
13 Mar 2023Editorial Decision: Accept