Water Electrolysis: Self-Supported Cobalt Phosphide Mesoporous Nanorod Arrays: A Flexible and Bifunctional Electrode for Highly Active Electrocatalytic Water Reduction and Oxidation (Adv. Funct. Mater. 47/2015)

The energy crisis and environmental pollution have attracted much attention and have promoted researches on clean and sustainable hydrogen energy resources. With the help of highly active and stable transition metal nickel-based catalysts, the production of hydrogen from water electrolysis from electrolyzed water has become an inexpensive and efficient strategy for generating hydrogen energy. In recent years, heteroatom doping has been found to be an effective strategy to improve the electrocatalytic hydrogen evolution reaction (HER) performances of nickel-based catalysts in acidic, neutral, and alkaline media. This review will highlight many recent works of inexpensive and readily available heteroatom-doped nickel-based HER catalysts. The evaluation methods for the performances of HER catalyst will be briefly described, and the role of heteroatom doping and its application in nickel-based catalyst will be summarized. This article will also point out some heteroatom doping strategies, which may provide references and inspire the design of other catalysts with dopants.

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Separation of hot electrons and holes in Au/LaFeO3 to boost the photocatalytic activities both for water reduction and oxidation

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2019.03.182 ◽

2019 ◽

Vol 44 (26) ◽

pp. 13242-13252 ◽

Cited By ~ 13

Author(s):

Yanbin Huang ◽

Jun Liu ◽

Dawei Cao ◽

Zheming Liu ◽

Kuankuan Ren ◽

...

Keyword(s):

Hot Electrons ◽

Water Reduction ◽

Photocatalytic Activities ◽

Reduction And Oxidation

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Structural, Electronic and Electrocatalytic Evaluation of Spinel Transition Metal Sulfide Supported Reduced Graphene Oxide

Journal of Materials Chemistry A ◽

10.1039/d1ta08224h ◽

2022 ◽

Author(s):

Santhosh Kumar Ramasamy ◽

Ramakrishnan S ◽

Sampath Prabhakaran ◽

Ae Kim ◽

Ranjith Kumar Dharman ◽

...

Keyword(s):

Graphene Oxide ◽

Hydrogen Production ◽

Transition Metal ◽

Reduced Graphene Oxide ◽

Metal Sulfide ◽

Water Electrolysis ◽

Vital Role ◽

Transition Metal Sulfide ◽

Highly Active ◽

Reduced Graphene

Development of highly active and durable non-precious spinel transition metal sulfide (STMS)-based electrocatalysts plays a vital role in increasing the efficiency of hydrogen production via water electrolysis. Herein, we have...

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Electrodeposition of Pt-Decorated Ni(OH)2/CeO2 Hybrid as Superior Bifunctional Electrocatalyst for Water Splitting

Research ◽

10.34133/2020/9068270 ◽

2020 ◽

Vol 2020 ◽

pp. 1-11

Author(s):

Huanhuan Liu ◽

Zhenhua Yan ◽

Xiang Chen ◽

Jinhan Li ◽

Le Zhang ◽

...

Keyword(s):

Water Splitting ◽

Cell Voltage ◽

Water Electrolysis ◽

Active Species ◽

Water Dissociation ◽

Electronic Interaction ◽

Bifunctional Electrocatalyst ◽

Highly Active ◽

A Cell ◽

Promising Application

The facile synthesis of highly active and stable bifunctional electrocatalysts to catalyze water splitting is attractive but challenging. Herein, we report the electrodeposition of Pt-decorated Ni(OH)2/CeO2 (PNC) hybrid as an efficient and robust bifunctional electrocatalyst. The graphite-supported PNC catalyst delivers superior hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activities over the benchmark Pt/C and RuO2, respectively. For overall water electrolysis, the PNC hybrid only requires a cell voltage of 1.45 V at 10 mA cm−2 and sustains over 85 h at 1000 mA cm−2. The remarkable HER/OER performances are attributed to the superhydrophilicity and multiple effects of PNC, in which Ni(OH)2 and CeO2 accelerate HER on Pt due to promoted water dissociation and strong electronic interaction, while the electron-pulling Ce cations facilitate the generation of high-valence Ni OER-active species. These results suggest the promising application of PNC for H2 production from water electrolysis.

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