Recent Advances in Silicon-Based Electrodes: From Fundamental Research toward Practical Applications

Mingzheng Ge, Chunyan Cao, Gill M. Biesold, Christopher D. Sewell, Shu Meng Hao, Jianying Huang, Wei Zhang, Yuekun Lai, Zhiqun Lin

Research output: Contribution to journalReview articlepeer-review

265 Scopus citations

Abstract

The increasing demand for higher-energy-density batteries driven by advancements in electric vehicles, hybrid electric vehicles, and portable electronic devices necessitates the development of alternative anode materials with a specific capacity beyond that of traditional graphite anodes. Here, the state-of-the-art developments made in the rational design of Si-based electrodes and their progression toward practical application are presented. First, a comprehensive overview of fundamental electrochemistry and selected critical challenges is given, including their large volume expansion, unstable solid electrolyte interface (SEI) growth, low initial Coulombic efficiency, low areal capacity, and safety issues. Second, the principles of potential solutions including nanoarchitectured construction, surface/interface engineering, novel binder and electrolyte design, and designing the whole electrode for stability are discussed in detail. Third, applications for Si-based anodes beyond LIBs are highlighted, specifically noting their promise in configurations of Li–S batteries and all-solid-state batteries. Fourth, the electrochemical reaction process, structural evolution, and degradation mechanisms are systematically investigated by advanced in situ and operando characterizations. Finally, the future trends and perspectives with an emphasis on commercialization of Si-based electrodes are provided. Si-based anode materials will be key in helping keep up with the demands for higher energy density in the coming decades.

Original languageEnglish
Article number2004577
JournalAdvanced Materials
Volume33
Issue number16
DOIs
StatePublished - 22 Apr 2021

Bibliographical note

Publisher Copyright:
© 2021 Wiley-VCH GmbH

Keywords

  • fundamental electrochemistry
  • high energy density
  • lithium-ion batteries
  • silicon-based electrodes
  • solid electrolyte interface

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