Manganese oxides supported on hydrogenated TiO2 nanowire array catalysts for the electrochemical oxygen evolution reaction in water electrolysis

2015 ◽  
Vol 3 (42) ◽  
pp. 21308-21313 ◽  
Author(s):  
Nan Li ◽  
Wei-Yan Xia ◽  
Jing Wang ◽  
Zi-Li Liu ◽  
Qing-Yu Li ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Manganese Oxides ◽  
Nanowire Array ◽  
Water Electrolysis ◽  
Core Shell ◽  
Tio2 Nanowire ◽  
Reaction In Water ◽  
Shell Nanowires ◽  
Electrochemical Oxygen

Manganese oxide/hydrogenated TiO2 core–shell nanowires exhibited enhanced electrocatalytic activity toward the oxygen evolution reaction in water electrolysis.

Pt-Mn 3 O 4 /C as efficient electrocatalyst for oxygen evolution reaction in water electrolysis

2014 ◽  
Vol 146 ◽  
pp. 119-124 ◽  
Author(s):  
Zhuo-ying Li ◽  
Shu-ting Shi ◽  
Qi-sui Zhong ◽  
Chan-juan Zhang ◽  
Chang-wei Xu
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
Reaction In Water

Electrochemical oxygen evolution reaction efficiently boosted by thermal-driving core–shell structure formation in nanostructured FeNi/S, N-doped carbon hybrid catalyst

Nanoscale ◽  
2018 ◽  
Vol 10 (35) ◽  
pp. 16911-16918 ◽  
Author(s):  
Zong Liu ◽  
Huaguang Yu ◽  
Baoxia Dong ◽  
Xu Yu ◽  
Ligang Feng
Keyword(s):  
Structure Formation ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Shell Structure ◽  
Catalytic Performance ◽  
Core Shell ◽  
Hybrid Catalyst ◽  
Ni Alloy ◽  
Core Shell Structure ◽  
Electrochemical Oxygen

Thermal-driving core–shell structure formation in Fe–Ni alloy incorporated by S, N-doped carbon can greatly boost the catalytic performance for electrochemical oxygen evolution reaction.

An Fe-doped NiTe bulk crystal as a robust catalyst for the electrochemical oxygen evolution reaction

2019 ◽  
Vol 55 (63) ◽  
pp. 9347-9350 ◽  
Author(s):  
Lei Zhong ◽  
Yufei Bao ◽  
Xu Yu ◽  
Ligang Feng
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Bulk Crystal ◽  
Stable Performance ◽  
Electrochemical Oxygen

An Fe doped NiTe bulk crystal was demonstrated to exhibit an extremely active and stable performance for the electrochemical oxygen evolution reaction.

Ion-biosorption induced core–shell Fe2P@carbon nanoparticles decorated on N, P co-doped carbon materials for the oxygen evolution reaction

2021 ◽  
Author(s):  
Min Jiang ◽  
Wei Fan ◽  
Anquan Zhu ◽  
Pengfei Tan ◽  
Jianping Xie ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Carbon Nanoparticles ◽  
Carbon Materials ◽  
Cost Effective ◽  
Core Shell ◽  
Co Doped

This work employs bacteria as precursors and induces a cost-effective biosorption strategy to obtain Fe2P@carbon nanoparticles decorated on N and P co-doped carbon (Fe2P@CNPs/NPC) materials.

In-situ coating amorphous boride on ternary pyrite-type boron sulfide for highly efficient oxygen evolution

2021 ◽  
Author(s):  
Tingting Li ◽  
Tianyun Jing ◽  
Dewei Rao ◽  
Xiaotian Jia ◽  
Yunpeng Zuo ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Highly Efficient ◽  
In Situ Coating ◽  
Electrochemical Oxygen

Multimetallic pyrite-type sulfides have been a promising electrocatalytic materials for electrochemical oxygen evolution reaction (OER), but still requires further improve due to the easily oxidization of surface atoms and the...

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

Heterostructure of core-shell IrCo@IrCoOx as efficient and stable catalysts for oxygen evolution reaction

2021 ◽  
Author(s):  
Xiaoping Ma ◽  
Lili Deng ◽  
Manting Lu ◽  
Yi He ◽  
Shuai Zou ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Proton Exchange Membrane ◽  
Precious Metals ◽  
Life Time ◽  
Proton Exchange ◽  
Core Shell ◽  
Large Current ◽  
Amorphous Metal Oxide

Abstract Although researches on non-noble metal electrocatalysts have been made some progress recently, their performance in proton exchange membrane water electrolyzer (PEMWE) is still incomparable to that of noble-metal-based catalysts. Therefore, it is a more practical way to improve the utilization of precious metals in electrocatalysts for oxygen evolution reaction (OER) in the acidic medium. Herein, nanostructured IrCo@IrCoOx core-shell electrocatalysts composed of IrCo alloy core and IrCoOx shell were synthesized through a simple colloidally synthesis and calcination method. As expected, the hybrid IrCo-200 NPs with petal-like morphology show the best OER activities in acidic electrolytes. They deliver lower overpotential and better electrocatalytic kinetics than pristine IrCo alloy and commercial Ir/C, reaching a low overpotential (j = 10 mA/cm2) of 259 mV (vs. RHE) and a Tafel slope of 59 mV dec−1. The IrCo-200 NPs displayed robust durability with life time of about 55 h in acidic solution under a large current density of 50 mA/cm2. The enhanced electrocatalytic activity may be associated with the unique metal/amorphous metal oxide core-shell heterostructure, allowing the improved charge transferability. Moreover, the *OH-rich amorphous shell functions as the active site for OER and prevents the further dissolution of the metallic core and thus ensures high stability.

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