Quantitative Delineation of the Low Energy Decomposition Pathway for Lithium Peroxide in Lithium-Oxygen Battery.

ABSTRACT: Identification of a low-potential decomposition pathway for lithium peroxide (Li₂O₂) in nonaqueous lithium-oxygen (Li-O₂) battery is urgently needed to ameliorate its poor energy efficiency. In this study, experimental data and theoretical calculations demonstrate that the recharge overpotential (η _RC) of Li-O₂ battery is fundamentally dependent on the Li₂O₂ crystallization pathway which is intrinsically related to the microscopic structural properties of the growing crystals during discharge. The Li₂O₂ grown by concurrent surface reduction and chemical disproportionation seems to form two discrete phases that have been deconvoluted and the amount of Li₂O₂ deposit

SUBMITTER: Dutta A 

PROVIDER: S-EPMC7539218 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature