In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 9, No. 47 ( 2021), p. 26852-26860
Abstract:
Low-cost high-performance catalysts are urgently required for hydrogen production from electrochemical water electrolysis by the hydrogen evolution reaction (HER) and slow oxygen evolution reaction (OER). Herein, by means of phosphating CoV-LDH impregnated with Ru (Ru–CoV-LDH/NF), a vanadium (V)-doped flower-like CoP/Ni 2 P heterostructure coupled with ultralow Ru (RuV–CoNiP/NF) is constructed. The electronic modulation caused by V doping effectively stimulates the activity of the CoP/Ni 2 P heterostructure assisted by ultrasmall Ru nanoparticles, thus the formed RuV–CoNiP/NF effectively drives the HER ( η 10 = 28 mV) and OER ( η 20 = 214 mV) in alkaline media. Impressively, during the overall water decomposition, it requires only an overpotential of 1.469 V to achieve 10 mA cm −2 , demonstrating almost the most remarkable catalytic performance compared to the past literature. Notably, the catalyst can still positively promote the electrolysis of alkaline seawater: when achieving 20 mA cm −2 , the required overpotential is only 1.538 V, which is almost the best experimental result at present. This work provides an idea for achieving low-cost high-performance bifunctional catalysts toward hydrogen production from water and seawater splitting.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2021
detail.hit.zdb_id:
2702232-8
