A novel electrochemically stable composite polymer electrolyte (CPE) containing a lignin derivative and dilignol was exploited for battery application for the first time. The lignin derivatives improved both the ionic conductivity and mechanical performance of the polymer-based electrolytes. Notably, the LiFePO4/Li cell had improved stability and recovery capacity, and the Coulombic efficiency was approximately 100%, with a capacity of more than 150 mAh g−1. The resulting alterations in the coordination number led to enhanced Li+ mobility and consequently, increased conductivity and cell capacity.
- Zitong Liu
- Takumi Karasawa
- Yoichi Tominaga
