MoP@NiCo-LDH on nickel foam as bifunctional electrocatalyst for high efficiency water and urea–water electrolysis

2020 ◽  
Vol 8 (35) ◽  
pp. 18106-18116 ◽  
Author(s):  
Tuo Wang ◽  
Huimin Wu ◽  
Chuanqi Feng ◽  
Lei Zhang ◽  
Jiujun Zhang
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Nickel Foam ◽  
Water Electrolysis ◽  
Bifunctional Electrocatalyst

Water electrolysis is an important way to produce hydrogen at the cathode, but the oxygen evolution reaction (OER) at the anode has a high overpotential.

Hierarchical FeCo2S4@CoFe layered double hydroxide on Ni foam as a bifunctional electrocatalyst for overall water splitting

2020 ◽  
Vol 10 (5) ◽  
pp. 1292-1298 ◽  
Author(s):  
Yunxia Huang ◽  
Xiaojuan Chen ◽  
Shuaipeng Ge ◽  
Qiqi Zhang ◽  
Xinran Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Low Cost ◽  
Water Electrolysis ◽  
Ni Foam ◽  
Bifunctional Electrocatalyst ◽  
Double Hydroxide

Designing high-efficiency and low-cost bifunctional electrocatalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is of great significance to produce hydrogen by water electrolysis.

scholarly journals Regulating the pore structure and oxygen vacancies of cobaltosic oxide hollow dodecahedra for an enhanced oxygen evolution reaction

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Yao Xiao ◽  
Yibo Wang ◽  
Meiling Xiao ◽  
Changpeng Liu ◽  
Shuai Hou ◽  
...  
Keyword(s):  
Surface Area ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
High Efficiency ◽  
Water Electrolysis ◽  
Charge Transfer Reaction ◽  
The Novel ◽  
Vacancy Defects ◽  
Novel Strategy

AbstractEngineering an electrocatalytic anode material to boost reaction kinetics is highly desirable for the anodic oxygen evolution reaction (OER), which is the major obstacle for high efficiency water electrolysis. Here, we present a novel kind of Zn-doped Co3O4 hollow dodecahedral electrocatalyst. Abundant oxygen vacancy defects are introduced due to the incorporation of Zn2+, which is beneficial for OH− adsorption and the charge transfer reaction during the OER process. Moreover, the increase in surface area caused by the advanced structure of the hollow porous dodecahedra facilitates mass transport by increasing the surface area. The novel strategy proposed in this study provides an efficient way to design high-performance electrocatalysts for water electrolysis.

Co0.7Fe0.3 NPs confined in yolk-shell N-doped carbon: engineering multi-beaded fibers as efficient bifunctional electrocatalyst for Zn-air battery

Nanoscale ◽  
2021 ◽  
Author(s):  
Ling Long ◽  
Haohui Liu ◽  
Jianbo Jia ◽  
Yelong Zhang ◽  
Shaojun Dong
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Bifunctional Catalysts ◽  
Bifunctional Electrocatalyst ◽  
Air Battery

The development of bifunctional catalysts with delicate structure, high-efficiency and good durability for oxygen evolution reaction (ORR) and oxygen evolution reaction (OER) is crucial to renewable Zn-air battery. In this...

scholarly journals The Effect of Iron Impurities on Transition Metal Catalysts for the Oxygen Evolution Reaction in Alkaline Environment: Activity Mediators or Active Sites?

2020 ◽  
Author(s):  
Ioannis Spanos ◽  
Justus Masa ◽  
Aleksandar Zeradjanin ◽  
Robert Schlögl
Keyword(s):  
Transition Metal ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Water Electrolysis ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Alkaline Water Electrolysis ◽  
Co Catalysts ◽  
Model Transition

AbstractThere is an ongoing debate on elucidating the actual role of Fe impurities in alkaline water electrolysis, acting either as reactivity mediators or as co-catalysts through synergistic interaction with the main catalyst material. This perspective summarizes the most prominent oxygen evolution reaction (OER) mechanisms mostly for Ni-based oxides as model transition metal catalysts and highlights the effect of Fe incorporation on the catalyst surface in the form of impurities originating from the electrolyte or co-precipitated in the catalyst lattice, in modulating the OER reaction kinetics, mechanism and stability. Graphic Abstract

A Co3O4/MnCO3 heterojunction on three-dimensional nickel foam for an enhanced oxygen evolution reaction

CrystEngComm ◽  
2020 ◽  
Vol 22 (23) ◽  
pp. 3984-3990 ◽  
Author(s):  
Guijin Yang ◽  
Botao Zhu ◽  
Daqiang Gao ◽  
Yujun Fu ◽  
Jing Zhao ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Nickel Foam ◽  
Three Dimensional

A Co3O4/MnCO3 heterojunction on NF with a unique architecture exhibits prominent OER activity and stability that is superior to most Co3O4-based catalysts.

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