Prospects of Electrode Materials and Electrolytes for Practical Potassium-Based Batteries

Potassium-ion batteries (PIBs) have attracted tremendous attention because of their high energy density and low-cost. As such, much effort has focused on developing electrode materials and electrolytes for PIBs at the material levels. This review begins with an overview of the high-performance electrode materials and electrolytes, and then evaluates their prospects and challenges for practical PIBs to penetrate the market. The current status of PIBs for safe operation, energy density, power density, cyclability, and sustainability is discussed and future studies for electrode materials, electrolytes, and electrode-electrolyte interfaces are identified. It is anticipated that this review will motivate research and development to fill existing gaps for practical potassium-based full batteries so that they may be commercialized in the near future.

Automated summary

This review focuses on high-performance electrode materials and electrolytes for potassium-ion batteries (PIBs), evaluating their potential and challenges for market penetration. Discussions include the current status of PIBs in terms of safety, energy density, power density, cyclability, and sustainability, as well as future research directions for electrode materials, electrolytes, and electrode-electrolyte interfaces in order to commercialize potassium-based full batteries in the near future.