Recent Progress on Modification Strategies of Alloy-based Anode Materials for Alkali-ion Batteries

Alkali-ion batteries, including lithium-ion batteries(LIBs), sodium-ion batteries(NIBs) and potassium-ion batteries (KIBs), with alloy-based anodes exhibit huge potential in high energy density due to the natural abundance, high theoretical capacity as well as suitable operating voltages. However, the practical application is severely hindered by the huge volume variation based on the alloying mechanism and inferior conductivity, especially for red phosphorus(P) and silicon(Si) anodes, which induces poor rate capability and fast capacity decay. Herein, we will briefly review fundamental advantages and challenges of alloy-based anode materials. Then, effective modification strategies of alloy-based anode materials for boosting the performance would be emphasized and discussed. Finally, we will share our perspectives and some opportunities to obtain high-performance alloy-based anode materials for further application.

Automated summary

Alloy-based anode materials in alkaline-ion batteries show great potential in high energy density, but are hindered by challenges such as volume variation and inferior conductivity. Effective modification strategies can be used to enhance their performance.