Polymer–Fluoride Composite Passivation Layer

Li loss cut to 1/4

An artificial passivation layer combining low-solubility polymer and metal fluoride suppresses SEI dissolution, reducing lithium corrosion by about 74% in lithium metal batteries.

Jin, Chengbin · Yiyu, Huang · Wei, Guoying · Hongyan, Li · Ju, Zhijin · Lu, Gongxun · Zheng, Jiale · Sheng, Ouwei · Tao, Xinyong

Nature Communications 2023

Specifications

Lithium corrosion reduced

{'zh': '约74', 'en': '~74'} %

锂腐蚀速率从

{'zh': '2.5', 'en': ''} μAh h⁻¹

Advantages

Prolonged operation achieved in Li symmetric cells and Li||LiFePO₄ cells

Strategy extended to ampere-hour-scale pouch cells