A Simple Method for Preparing Carbon‐doped CoP to Enhance Hydrogen Evolution Reaction

In this study, a composite of Mo, Co co-doped NiS bulks grown on an Ni foam (Mo,Co-NiS/NF) was synthesized as a bi-functional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) using a simple method.

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Fabrication of C/Co-FeS2/CoS2 with Highly Efficient Hydrogen Evolution Reaction

Catalysts ◽

10.3390/catal9060556 ◽

2019 ◽

Vol 9 (6) ◽

pp. 556 ◽

Cited By ~ 3

Author(s):

Yuan Gao ◽

Ka Wang ◽

Haizeng Song ◽

Han Wu ◽

Shancheng Yan ◽

...

Keyword(s):

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Hydrothermal Process ◽

Carbon Doping ◽

Superior Performance ◽

Carbon Cloth ◽

Carbon Doped ◽

Surface Electronic Structure ◽

Efficient Alternative ◽

A Current

The mainstream strategy for designing hydrogen electrocatalysts is to adjust their surface electronic structure; however, the conductivity of the electrocatalyst and the synergy with its substrate are still challenges to overcome. In this work, we report a carbon-doped Co-FeS2/CoS2 (C/Co-FeS2/CoS2) electrode, prepared via a hydrothermal process with carbon cloth (CC) as the substrate and carbon doping. The C/Co-FeS2/CoS2 electrode shows excellent catalytic activity in the hydrogen evolution reaction (HER) with an overpotential of 88 mV at a current density of −10 mA∙cm−2 in 0.5 M H2SO4 solution. The Tafel slope is 66 mV∙dec−1. Such superior performance is attributed to the high electrical conductivity of the electrocatalyst and its synergy with the substrate. Our study provides an efficient alternative in the field of electrocatalysis.

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Carbon doped molybdenum disulfide nanosheets stabilized on graphene for the hydrogen evolution reaction with high electrocatalytic ability

Nanoscale ◽

10.1039/c5nr07370g ◽

2016 ◽

Vol 8 (3) ◽

pp. 1676-1683 ◽

Cited By ~ 64

Author(s):

Yong Li ◽

Jiao Wang ◽

Xike Tian ◽

Longlong Ma ◽

Chu Dai ◽

...

Keyword(s):

Molybdenum Disulfide ◽

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Solvothermal Process ◽

Carbon Doped ◽

Molybdenum Disulfide Nanosheets

Thin and edge-rich molybdenum disulfide nanosheets, with carbon doped in the interlayers and decorated on graphene, were developed by a facile solvothermal process for the hydrogen evolution reaction.

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A Nickel Coated Copper Substrate as a Hydrogen Evolution Catalyst

Catalysts ◽

10.3390/catal12010058 ◽

2022 ◽

Vol 12 (1) ◽

pp. 58

Author(s):

Poshan Kumar Reddy Kuppam ◽

K. M. M. D. K. Kimbulapitiya ◽

Srikanth Vuppala ◽

Kuangye Wang ◽

G. Phaneendra Reddy ◽

...

Keyword(s):

Hydrogen Evolution ◽

Molybdenum Oxide ◽

Hydrogen Evolution Reaction ◽

Large Scale ◽

Copper Substrate ◽

Precious Metals ◽

Electron Gun ◽

Scale Production ◽

Simple Method ◽

Onset Potential

Replacing precious metals with low-cost metals is the best solution for large scale production. Copper is known for its excellent conductivity and thermal management applications. When it comes to hydrogen evolution reaction, it is highly unstable, especially in KOH solution. In this paper, we approached a simple method to reduce corrosion and improve the performance by depositing nickel-molybdenum oxide and nickel on copper substrates and the achieved tafel slopes of 115 mV/dec and 117 mV/dec at 10 mA/cm2. While at first, molybdenum oxide coated samples showed better performance after 100 cycles of stability tests, the onset potential rapidly changed. Cu–Ni, which was deposited using the electron gun evaporation (e-gun), has shown better performance with 0.28 V at 10 mA/cm2 and led to stability after 100 cycles. Our results show that when copper is alloyed with nickel, it acts as a promising hydrogen evolution reaction (HER) catalyst.

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A crystalline–amorphous Ni–Ni(OH)2 core–shell catalyst for the alkaline hydrogen evolution reaction

Journal of Materials Chemistry A ◽

10.1039/d0ta08735a ◽

2020 ◽

Vol 8 (44) ◽

pp. 23323-23329

Author(s):

Jing Hu ◽

Siwei Li ◽

Yuzhi Li ◽

Jing Wang ◽

Yunchen Du ◽

...

Keyword(s):

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Electrocatalytic Activity ◽

Core Shell ◽

Alkaline Conditions

Crystalline–amorphous Ni–Ni(OH)2 core–shell assembled nanosheets exhibit outstanding electrocatalytic activity and stability for hydrogen evolution under alkaline conditions.

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Cobaloxime-Based Double Complex Salts as Efficient and Versatile Catalysts for the Light-Driven Hydrogen Evolution Reaction

10.26434/chemrxiv.11537661 ◽

2020 ◽

Author(s):

Elisabeth Hofmeister ◽

Jisoo Woo ◽

Tobias Ullrich ◽

Lydia Petermann ◽

Kevin Hanus ◽

...

Keyword(s):

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Systematic Study ◽

Cobalt Complexes ◽

Spectroscopic Studies ◽

Double Complex ◽

Double Complex Salts ◽

Noble Metal Catalysts ◽

Reduction Potentials ◽

Complex Salts

Cobaloximes and their BF2-bridged analogues have emerged as promising non-noble metal catalysts for the photocatalytic hydrogen evolution reaction (HER). Herein we report the serendipitous discovery that double complex salts such as [Co(dmgh)2py2]+[Co(dmgBPh2)2Cl2]- can be obtained in good yields by treatment of commercially available [Co(dmgh)2pyCl] with triarylboranes. A systematic study on the use of such double complex salts and their single salts with simple counterions as photocatalysts revealed HER activities comparable or superior to existing cobaloxime catalysts and suggests ample opportunities for this compound class in catalyst/photosensitizer dyads and immobilized architectures. Preliminary electrochemical and spectroscopic studies indicate that one key advantage of these charged cobalt complexes is that the reduction potentials as well as the electrostatic interaction with charged photosensitizers can be tuned.

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