Author(s): Lu, MJ (Lu, Mengjie); Chen, D (Chen, Duo); Li, RQ (Li, Ruiqing); Wang, BR (Wang, Boran); Cai, D (Cai, Dong); Li, L (Li, La); Han, W (Han, Wei)

Source: SUSTAINABLE ENERGY & FUELS Volume: 4 Issue: 8 Pages: 4039-4045 DOI: 10.1039/d0se00266f Published: AUG 1 2020

Abstract: Designing highly efficient, stable and low-cost electrocatalysts for the oxygen evolution reaction (OER) plays a key role in producing hydrogenviathe electrolysis of water. Herein, we have reported a facile and manageable approach to fabricate a 3D steady core-shell dendrite electrocatalyst with a nickel cobalt sulfide porous nanosheet as an outer layer and a CuO nanowire as an inner core supported by a Cu foam for OER. Benefiting from the advantages of this unique 3D core-shell structure that endows abundant active sites, abundant interfacial heterostructures, high-speed electron transport network and short diffusion paths for releasing O(2)bubbles, the electrocatalyst displays outstanding OER performance with low overpotentials of only 240, 289, and 309 mV at the current densities of 10, 50, and 100 mA cm(-2), respectively, and high stability over 48 h at a current density of 50 mA cm(-2)in alkaline media. The excellent properties of the synthesized 3D dendrite-like catalyst for OER can pave the way for large-scale practical water electrolysis.

Accession Number: WOS:000552930600020

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Chen, Duo                  0000-0002-1191-0742

ISSN: 2398-4902

Full Text: https://pubs.rsc.org/en/content/articlelanding/2020/SE/D0SE00266F#!divAbstract