使用済みLiFePO₄カソードを陰イオン交換膜水電解における効率的な酸素発生電極触媒へアップサイクル
Baoling Niu1, Huijing Ma1, Xia Long2
1State Key Laboratory of Green Papermaking and Resource Recycling, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. qianxufang@sjtu.edu.cn.
Chemical communications (Cambridge, England)
|February 23, 2026
Abstract:
An efficient oxygen evolution reaction electrocatalyst LFP1G13Ni0.5Urea1.5 was innovatively developed by upgrading waste LiFePO4 and graphite. LFP1G13Ni0.5Urea1.5 showed an overpotential of 283 mV at 10 mA cm-2 and a Tafel slope of 38.9 mV dec-1, outperforming IrO2. It achieved 1 A cm-2 at 1.847 V and 800 h stability at 0.5 A cm-2 in anion exchange membrane water electrolysis, providing a dual-benefit strategy that simultaneously achieved battery waste valorization and low-cost green hydrogen production.
