Recent advancements and perspectives of fast-charging composite anodes for lithium-ion batteries

Science China Press

 

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Composite anodes with enhanced ion diffusion kinetics present a transformative opportunity to revolutionize fast-charging design. To illuminate the path towards designing advanced LIBs, this review delves into a comprehensive summary of recent breakthroughs in fast-charging composite anodes, offering valuable insights for the development of novel designs.

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Credit: ©Science China Press

This study is led by Prof. Zheng Liang (Frontiers Science Center for Transformative Molecules, Zhang Jiang Institute for Advanced Study, Shanghai Jiao Tong University) and Dr. Xinyang Yue (Frontiers Science Center for Transformative Molecules, Zhang Jiang Institute for Advanced Study, Shanghai Jiao Tong University). This paper provides a comprehensive review of the recent advancements in fast-charging composite anodes for LIBs, with a pivotal emphasis on the design principles and material selection strategies employed in various composite anode formulations.

The escalating demand for fast-charging lithium-ion batteries (LIBs) has mirrored the rapid proliferation and widespread adoption of electric vehicles and portable electronic devices. Nonetheless, the sluggish diffusion kinetics of lithium ions and electrode degradation in conventional graphite-based anodes pose formidable hurdles in achieving optimal fast-charging capabilities for LIBs. To overcome these challenges, the innovative concept of fast-charging composite anodes, a paradigm shift from traditional single-component designs, has emerged as a promising avenue to enhance the overall performance of LIBs

under rapid charging conditions. In this review, the critical factors that affect the fast-charging performance of composite anodes were fully discussed, including electrode structure, material properties, and electrolyte composition. Additionally, the recent research work on composite anodes for upgrading fast-charging performance was analyzed in detail. Three types of representative composite anodes (graphite-based composite anodes, LTO-based composite anodes, and alloy-typed composite anodes) were assessed and compared systematically in the matter of anode structure, manufacturing process, and battery performance. At last, they have provided an outlook on the potential future developments of fast-charging composite anodes, offering insights into potential breakthroughs and directions for further exploration.

The core content of their Review is as follows.

(1) Comprehensively explored the key factors affecting the fast-charging performance of composite anodes. Ionic transport and charge transfer are two main factors dominating fast charging in anodes. A comprehensive and in-depth analysis of Li-ion diffusion and the rate-determining steps of electrochemical reactions in LIBs provides more systematic guidance for research and improvement.

(2) They systematically evaluated and compared the performance of three representative composite anodes in terms of anode structure, manufacturing process, and battery performance. This comprehensive and systematic comparison helps readers clearly understand the advantages and disadvantages of different types of composite anodes, providing a strong reference for selection in practical applications.

(3) The future research directions for the development of fast-charging composite anodes were envisioned. A deeper insight into the structures and properties of anode materials is vital to guide the design of anodes, which can also provide possibilities for meeting the future requirements of fast charging. Effective in-situ characterization techniques should be applied to gain deeper insights into the complex mechanisms of fast-charging technologies. Integrated, synergistic development of various components in fast-charging batteries should be promoted.

 

See the article:

Recent advancements and perspectives of fast-charging composite anodes for lithium-ion batteries

https://doi.org/10.1007/s11426-024-2265-9

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Journal

Science China Chemistry

DOI

10.1007/s11426-024-2265-9