ELECTRODES AND ELECTROCHEMICAL DEVICES AND METHODS OF MAKING ELECTRODES AND ELECTROCHEMICAL DEVICES

摘要

Dual use gas diffusion-gas evolution electrodes containing diamond-like carbon are described, which can act as gas diffusion electrodes during discharge, and gas evolution electrodes during recharge. Electrodes of the disclosed materials are electrochemically robust, inhibit multi-step reactions, and have high, isotropic thermal conductivity. The disclosed electrodes can be used as air electrodes of rechargeable metal-air batteries.

主权项

1. A dual use gas diffusion-gas evolution electrode comprising:
a conductive network of diamond-like carbon; and a catalyst that catalyzes a desired reaction during at least one of oxidation or reduction; wherein the diamond-like carbon requires an overpotential of at least 0.3 volts greater than graphite at a given current density for inner-sphere reactions; the conductive network of diamond-like carbon has a thermal conductivity of at least about 1000 W/m·K.