Facile synthesis of three-dimensional conducting scaffold with magnesiophilic decorations toward non-dendritic Mg-metal batteries

Jin Hwan Kwak, Sunghee Shin, Yunseo Jeoun, Yongheum Lee, Seungho Yu, Young Soo Yun, Yung Eun Sung, Seung Ho Yu, Hee Dae Lim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Despite the substantial efforts aimed at suppressing metallic dendrite growth in Li-metal batteries, Mg-metal dendrite growth has thus far received relatively little attention, and the formation of Mg dendrites has recently been shown to be a critical limitation for the practical advancement of rechargeable Mg-ion batteries. The development of an appropriate anode to efficiently accommodate Mg deposits is thus key to overcome this limitation. Here, we report the unique design of Ag-decorated Cu foam (ACF) consisting of a porous Cu scaffold decorated with magnesiophilic Ag nanoparticles (NPs) on its surface through a facile one-step synthesis process. For the first time, we demonstrate the strong affinity of Ag atoms to the electrochemically deposited Mg; magnesiophilicity is then adopted to design an efficient anode host for Mg-metal batteries and suppress the Mg dendritic formation. As a result, the ACF exhibits a greatly decreased nucleation overpotential with a longer cycle life compared with those of conventional substrates. In the absence of magnesiophilic Ag nano-seeds, non-uniform and top-oriented Mg depositions are observed; in contrast, the ACF helps contribute to an even deposition of the electrochemically formed Mg over the entire active surface, resulting in improved electrochemical performance.

Original languageEnglish
Article number231724
JournalJournal of Power Sources
Volume541
DOIs
Publication statusPublished - 2022 Sep 1

Keywords

  • Cu scaffold
  • Dendrite
  • Magnesiophilic seeds
  • Magnesium
  • Magnesium metal battery

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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