Bi-Functional Diaminopropane Additive Enables Stable Li Anodes and Highly Efficient Cathodes for High-Performance Li-Air Batteries.

ABSTRACT: Low round-trip efficiency and limited cycle durability remain significant challenges for commercial of Lithium-air batteries (LABs). This study introduces a novel electrolyte additive, diaminopropane (DAP), that simultaneously addresses anode stability and cathode reaction kinetics in ambient LABs. The proposed mechanism involves a bi-function approach: 1) at the anode, DAP spontaneously reacts with metallic Li to form Li-DAP, which subsequently cross-links with ether solvents to create a protective gel layer. This layer effectively mitigates Li dendrite formation and shields the anode from ambient moisture and CO₂ corrosion. 2) At the cathode, DAP modifies the oxygen reduction pathway from surface-mediated to solution-mediated, while simultaneously acting as an efficient redox

SUBMITTER: Hu H 

PROVIDER: S-EPMC12407377 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature