A Universal Principle to Accurately Synthesize Atomically Dispersed Metal-N₄ Sites for CO₂ Electroreduction.

ABSTRACT: Atomically dispersed metal-nitrogen sites-anchored carbon materials have been developed as effective catalysts for CO₂ electroreduction (CO₂ER), but they still suffer from the imprecisely control of type and coordination number of N atoms bonded with central metal. Herein, we develop a family of single metal atom bonded by N atoms anchored on carbons (SAs-M-N-C, M = Fe, Co, Ni, Cu) for CO₂ER, which composed of accurate pyrrole-type M-N₄ structures with isolated metal atom coordinated by four pyrrolic N atoms. Benefitting from atomically coordinated environment and specific selectivity of M-N₄ centers, SAs-Ni-N-C exhibits superior CO₂ER performance with onset potential of - 0.3 V, CO Faradaic efficiency (F.E.) of 98.5% at - 0

SUBMITTER: Zheng W 

PROVIDER: S-EPMC7770888 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature