Mesoporous Cobalt Molybdenum
Nitride: A Highly Active
Bifunctional Electrocatalyst and Its Application in Lithium–O<sub>2</sub> Batteries
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Abstract
Bifunctional electrocatalysts for the oxygen reduction
reaction
(ORR) and the oxygen evolution reaction (OER) play a critical role
in fuel cells and metal–air batteries. In this article, mesoporous
cobalt molybdenum nitride (Co<sub>3</sub>Mo<sub>3</sub>N) is prepared
using a coprecipitation method followed by ammonia annealing treatment.
Much more active sites generated by well designed mesoporous nanostructure
and intrinsically electronic configuration lead to excellent electrocatalytic
performance for ORR/OER in Li–O<sub>2</sub> cells, delivering
considerable specific capacity and alleviating polarization. It is
manifested that high charge–discharge efficiency and good cycle
stability were obtained in the LiTFSI/TEGDME electrolyte owing to
a stable interface between optimized electrolyte and electrode material