Triblock Copolymer Pluronic F68 as a Corrosion Inhibitor for Aluminum-air Battery: An Electrochemical and in Silico Study

摘要

In Al-air batteries, the self-corrosion of aluminum electrodes is an issue worthy of concern. In this paper,the inhibition performance and anti-corrosion mechanism of a triblock copolymer, namely, Pluronic F68,on Al in 3.5% NaCl electrolyte are investigated with a multidimension approach combiningelectrochemical and theoretical approaches. The results suggest that Pluronic F68 inhibitor can presentwonderful anticorrosion efficiency, and the maximum inhibition efficiency can reach 94% at low doseconcentration. Meanwhile, the battery containing Pluronic F68 exhibits better performance.Significantly, the present work is beneficial to understand the inhibition mechanism of similar organicpolymers and provides a feasible approach to develop Al-air batteries.