Horizontal Stress Release for Protuberance-Free Li Metal Anode

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yuanming Liu
  • Xiaoguang Yin
  • Xin Shen
  • Peichao Zou
  • Xianying Qin
  • Cheng Yang
  • Qiang Zhang
  • Feiyu Kang
  • Baohua Li

Detail(s)

Original languageEnglish
Article number2002522
Journal / PublicationAdvanced Functional Materials
Volume30
Issue number38
Online published23 Jul 2020
Publication statusPublished - 17 Sep 2020
Externally publishedYes

Abstract

Dendrite-induced short circuit and capacity loss present major barriers to high-energy-density lithium (Li) metal batteries. Many approaches have been proposed to regulate or restrain the formation of Li dendrite, yet it has not been fully eliminated. Herein, a dredging tactic with hemisphere-like concaves is designed to horizontally release the stress during Li deposition, making both upper smooth Li and nether granular Li dwell inside the compartmented tummy. With such protuberance-free Li metal anode, an ultrahigh Coulombic efficiency over 96% of the half-cell is maintained after 490 cycles and capacity retention of 100% for the full cell paired with a LiFePO4 cathode after 140 cycles (with low N/P ratio of ≈5) is achieved simultaneously. This study contributes to a deeper comprehension of electrochemical metal deposition and promotes the development of safe batteries.

Research Area(s)

  • hemisphere-like concaves, horizontal growth, lithium metal batteries, protuberance-free anodes, stress release

Citation Format(s)

Horizontal Stress Release for Protuberance-Free Li Metal Anode. / Liu, Yuanming; Yin, Xiaoguang; Shen, Xin et al.

In: Advanced Functional Materials, Vol. 30, No. 38, 2002522, 17.09.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review