Transparent Conducting Oxides as Cathodes in Li-O2 Batteries: A First Principles Computational InvestigationLi-O2 batteries have traditionally used carbon based electrodes (graphite, buckypaper) as the cathode of choice due toits good electrical conductivity, stability against non-aqueous electrolytes like dimethoxyethane (DME) and ease ofhandling. But, the carbon cathode also leads to formation of carbonate by-products that increase overpotentials duringcharging leading to degradation of the cathode and reduction of cyclability. Recent investigations have focused on using metal-oxides like SnO2, TiO2 as viable cathodes-alternatives in Li-O2 systems. In this paper, we investigate transparent conducting oxides (TCOs) as cathodes with focus on the interface between the TCO surfaces and the discharge product, Li2O2, in the Li-O2 battery using first principles computations.
Document ID
20190030261
Acquisition Source
Ames Research Center
Document Type
Presentation
Authors
Radhakrishnan, Balachandran (Stinger Ghaffarian Technologies Inc. (SGT Inc.) Moffett Field, CA, United States)
Lawson, John W. (NASA Ames Research Center Moffett Field, CA, United States)