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Toward Maximum Energy Density Enabled by Anode-Free Lithium Metal Batteries; Recent Progress and Perspective
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  • Cheol-Young Park,
  • Jinuk Kim,
  • Won-Gwang Lim,
  • Jinwoo Lee
Cheol-Young Park
Korea Advanced Institute of Science and Technology Department of Chemical & Biomolecular Engineering
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Jinuk Kim
Korea Advanced Institute of Science and Technology Department of Chemical & Biomolecular Engineering
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Won-Gwang Lim
Korea Advanced Institute of Science and Technology Department of Chemical & Biomolecular Engineering
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Jinwoo Lee
Korea Advanced Institute of Science and Technology

Corresponding Author:jwlee1@kaist.ac.kr

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Abstract

Owing to the emergence of energy storage and electric vehicles, the desire for safe high-energy-density energy storage devices has increased research interest in anode-free lithium metal batteries (AFLMBs). Unlike general LMBs, in which excess Li exists to compensate for the irreversible loss of Li, only the current collector is employed as an anode and paired with a lithiated cathode in the fabrication of AFLMBs. Owing to their unique cell configuration, AFLMBs have attractive characteristics, including the highest energy density, safety, and cost-effectiveness. However, developing AFLMBs with extended cyclability remains an issue for practical applications because the high reactivity of Li with limited inventory causes severely low Coulombic efficiency, poor cyclability, and dendrite growth. To address these issues, tremendous effort has been devoted to stabilize Li-metal anodes for AFLMBs. In this review, we highlight the importance and challenges of AFLMBs. Then, we thoroughly review diverse strategies, such as modifying current collectors, the formation of robust interfaces by engineering advanced electrolytes, and operation protocols. Finally, a future perspective on the strategy is provided to insight into the basis of future research. We hope that this review provides a comprehensive understanding by reviewing previous research and arousing more interest in this field.
24 Feb 2023Submitted to Exploration
21 Mar 2023Submission Checks Completed
21 Mar 2023Assigned to Editor
21 Mar 2023Reviewer(s) Assigned
21 Apr 2023Review(s) Completed, Editorial Evaluation Pending
21 Apr 2023Editorial Decision: Revise Major
18 May 20231st Revision Received
19 May 2023Submission Checks Completed
19 May 2023Assigned to Editor
19 May 2023Reviewer(s) Assigned
26 May 2023Review(s) Completed, Editorial Evaluation Pending
17 Jul 2023Editorial Decision: Accept