4.8 Review

Alloy-Type Anodes for High-Performance Rechargeable Batteries

Journal

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 33, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202206770

Keywords

Alloy-Type Anodes; Batteries; Electrolytes; Protective Interfaces; Structural Design

Funding

  1. National Natural Science Foundation of China [52125105, 52061160484, 51972329]
  2. Shenzhen Science and Technology Planning Project [JCYJ20200109115624923]
  3. Natural Science Foundation of Guangdong Province [2019TX05L389, 2022A1515011365]
  4. Institute of Manufacturing Engineering of Huaqiao University [2021IME-001]

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Alloy-type anodes have high theoretical capacity but face challenges such as volume expansion and fragility. This review summarizes recent progress in the research of batteries based on alloy-type anodes and highlights improvements in structural design, protective interface, and electrolyte selection as effective means to enhance their performance.
Alloy-type anodes are one of the most promising classes of next-generation anode materials due to their ultrahigh theoretical capacity (2-10 times that of graphite). However, current alloy-type anodes have several limitations: huge volume expansion, high tendency to fracture and disintegrate, an unstable solid-electrolyte interphase (SEI) layer, and low Coulombic efficiency. Efforts to overcome these challenges are ongoing. This Review details recent progress in the research of batteries based on alloy-type anodes and discusses the direction of their future development. We conclude that improvements in structural design, the introduction of a protective interface, and the selection of suitable electrolytes are the most effective ways to improve the performance of alloy-type anodes. Furthermore, future studies should direct more attention toward analyzing their synergistic promoting effect.

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