Improved Electrocatalytic Performance of Core-shell NiCo/NiCoO with amorphous FeOOH for Oxygen-evolution Reaction

2017 ◽  
Vol 257 ◽  
pp. 1-8 ◽  
Author(s):  
Yubo Shao ◽  
Meiyong Zheng ◽  
Minmin Cai ◽  
Lan He ◽  
Cailing Xu
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Core Shell ◽  
Electrocatalytic Performance

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.

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.

The oxygen evolution reaction enabled by transition metal phosphide and chalcogenide pre-catalysts with dynamic changes

2019 ◽  
Vol 55 (60) ◽  
pp. 8744-8763 ◽  
Author(s):  
Wei Li ◽  
Dehua Xiong ◽  
Xuefei Gao ◽  
Lifeng Liu
Keyword(s):  
Transition Metal ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Dynamic Changes ◽  
Metal Phosphide ◽  
Electrocatalytic Performance ◽  
Metal Phosphides ◽  
Compositional Changes ◽  
Transition Metal Phosphide ◽  
Transition Metal Phosphides

Dynamic morphological, structural and compositional changes will occur when transition metal phosphides and chalcogenides are used to catalyze the oxygen evolution reaction, which can substantially enhance their electrocatalytic performance.

Dendritic core-shell Ni@Ni(Fe)OOH metal/metal oxyhydroxide electrode for efficient oxygen evolution reaction

2019 ◽  
Vol 469 ◽  
pp. 731-738 ◽  
Author(s):  
Jiaxin Wang ◽  
Wenchao Zhang ◽  
Zilong Zheng ◽  
Jingping Liu ◽  
Chunpei Yu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Core Shell ◽  
Dendritic Core ◽  
Metal Metal

Exfoliation of ultrathin FePS3 layers as a promising electrocatalyst for the oxygen evolution reaction

2018 ◽  
Vol 54 (35) ◽  
pp. 4481-4484 ◽  
Author(s):  
Wen Zhu ◽  
Wei Gan ◽  
Zahir Muhammad ◽  
Changda Wang ◽  
Chuanqiang Wu ◽  
...  
Keyword(s):  
Ball Milling ◽  
Oxygen Evolution ◽  
Alkaline Medium ◽  
Oxygen Evolution Reaction ◽  
Chemical Vapor ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Electrocatalytic Performance

Few-layer ternary FePS3 nanosheets, prepared via chemical vapor transport synthesis and ball-milling exfoliation, exhibit excellent electrocatalytic performance for the oxygen evolution reaction in an alkaline medium.

scholarly journals Au@Co2P core/shell nanoparticles as a nano-electrocatalyst for enhancing the oxygen evolution reaction

RSC Advances ◽  
2019 ◽  
Vol 9 (70) ◽  
pp. 40811-40818 ◽  
Author(s):  
Xiaofang Zhang ◽  
Aixian Shan ◽  
Sibin Duan ◽  
Haofei Zhao ◽  
Rongming Wang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Reaction Performance ◽  
Core Shell Nanoparticles

Au@Co2P core/shell nanoparticles were designed and prepared to improve the oxygen evolution reaction performance.

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