Advances and future perspectives on silicon-based anodes for lithium-ion batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Silicon anodes are promising for next-generation lithium-ion batteries (LIBs) due to high capacity and abundant reserves.
• However, silicon's significant volume change during cycling causes pulverization, electrode degradation, and unstable solid electrolyte interphase (SEI) formation, leading to rapid capacity fade.

Purpose of the Study:

• To systematically review and analyze the failure mechanisms of silicon-based anodes in LIBs.
• To explore and summarize effective strategies for improving the capacity retention and stability of silicon anodes.
• To discuss the potential of 3D printing technology in fabricating high-performance silicon electrodes.

Main Methods:

• Literature review and systematic summarization of existing research on silicon anode improvement strategies.
• Analysis of enhancement mechanisms related to material particle size regulation, structural and compositional optimization, and novel binder exploration.
• Discussion of recent advancements in 3D printing for silicon-based electrode preparation.

Main Results:

• Identified key improvement strategies including particle size control, advanced structural/compositional engineering, and novel binder development.
• Highlighted the role of these strategies in mitigating volume expansion issues and enhancing electrode stability.
• Showcased the application of 3D printing in creating advanced silicon anode architectures for improved performance.

Conclusions:

• Effective strategies exist to overcome the challenges associated with silicon anodes, paving the way for their practical application.
• Further research into material design, electrode engineering, and advanced manufacturing techniques like 3D printing is crucial.
• Addressing remaining challenges will accelerate the development of high-performance silicon anodes for next-generation LIBs.