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Abstract:
Developing non-Pt based electrocatalysts that are highly active and stable has attracted much attention to realize the blueprint of the "hydrogen economy". Herein, an efficient 3d hybrids electrocatalyst, consisting of in-situ reduced CoNi (CN) alloys and CoNi layered double hydroxides (CNL) activated 1T/2H molybdenum disulfide (MoS2), on carbon paper (CP) was proposed. Benefited from the interface effect for water activation and phase engineering for fast electron transfer, the CN/CNL/MoS2/CP exhibits excellent electrocatalytic activity for hydrogen evolution reaction (HER) with low overpotentials in a wide pH range (overpotential at -10 mA/cm(2) (eta(10))= 112 mV in 0.5 M H2SO4, 106 mV in 1 M KOH and 145 mV in 1 M PBS, respectively). Moreover, the mechanisms of HER in alkaline and neutral media have been discussed in detail. It was discovered that the edgesides of CN/CNL can promote the water dissociation to generate H protons to facilitate the subsequent steps on CN and MoS2 for the release of H-2.
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CHEMICAL ENGINEERING JOURNAL
ISSN: 1385-8947
Year: 2021
Volume: 412
1 6 . 7 4 4
JCR@2021
1 3 . 4 0 0
JCR@2023
ESI Discipline: ENGINEERING;
ESI HC Threshold:105
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 101
SCOPUS Cited Count: 85
ESI Highly Cited Papers on the List: 11 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
Affiliated Colleges: