Solid solution nitride/carbon nanotube hybrids enhance electrocatalysis of oxygen in zinc-air batteries

He, Guanjie, Han, X., Moss, B. , Weng, Z., Gadipelli, S., Lai, F., Kafizas, A.G., Brett, D.J.L., Guo, Z.X., Wang, H. and Parkin, I.P. (2018) Solid solution nitride/carbon nanotube hybrids enhance electrocatalysis of oxygen in zinc-air batteries. Energy Storage Materials, 15 . pp. 380-387.

Full content URL:

Full text not available from this repository.

Item Type:Article
Item Status:Live Archive


Bi-functional electrocatalysts capable of both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) are highly desirable for a variety of renewable energy storage and conversion technologies. To develop noble metal alternatives for catalysis, non-noble metal compounds have been tremendously pursued but remain non-ideal to issues relating to stability and population of the number of exposed active sites. Inspired by Engel-Brewer valence bond theory, strongly coupled nickel-cobalt-nitride solid-solution/carbon nanotube hybrids were developed by tuning their bifunctionalities from an atomistic scale. The as-synthesized catalysts demonstrate superior catalytic properties to commercial noble-metal based counterparts, i.e. platinum on a carbon support for ORR and iridium oxide for OER, also with much enhanced stability. First-principle calculations and structural analysis show that the optimized structures potentially possess multiple active sites, both bulk-surface response and separated surface charge distribution from optimization of Ni/Co nitrides could contribute to synergistic effects for improved catalytic performances. This study provides not only unique theoretical insights but also a design concept for producing effective bi-functional catalysts with balanced-ORR/OER active sites for this class of transition metal nitride hybrid system and paves the way for exploring other metal nitrides for similar purposes.

Additional Information:cited By 2
Divisions:College of Science > School of Chemistry
ID Code:39492
Deposited On:16 Jan 2020 16:27

Repository Staff Only: item control page