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.

Facile construction of S-containing Co-based metal organic frameworks core-shell microspheres as an efficient bifunctional oxygen electrocatalyst

2021 ◽  
Author(s):  
Ping Liu ◽  
Huijuan Han ◽  
Qingyun Xia ◽  
Nini Ma ◽  
Sihan Lu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Organic Frameworks ◽  
Cost Effective ◽  
Reduction Reaction ◽  
Shell Structures ◽  
Core Shell ◽  
Bifunctional Electrocatalyst ◽  
Metal Organic

A cost-effective non-noble metal bifunctional electrocatalyst towards oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is very important for energy-related applications. Micro/nanomaterials with core-shell structures have emerged as potential...

Amorphous Co-doped MoOx nanospheres with a core–shell structure toward an effective oxygen evolution reaction

2019 ◽  
Vol 7 (3) ◽  
pp. 1005-1012 ◽  
Author(s):  
Chengying Guo ◽  
Xu Sun ◽  
Xuan Kuang ◽  
Lingfeng Gao ◽  
Mingzhu Zhao ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Shell Structure ◽  
Electrocatalytic Activity ◽  
Hydrothermal Reaction ◽  
Core Shell ◽  
Core Shell Structure ◽  
Unique Core ◽  
Co Doped

Amorphous cobalt-doped MoOx (CMO) nanospheres with a unique core–shell structure have been successfully fabricated via a simple hydrothermal reaction. The CMO exhibited enhanced electrocatalytic activity for the oxygen evolution reaction.

Metal-Organic Framework Derived NiSe2/CeO2 Nanocomposite as a High-Performance Electrocatalyst for Oxygen Evolution Reaction (OER)

2021 ◽  
Author(s):  
Davood Taherinia ◽  
Seyyed Heydar Moravvej ◽  
Mohammad Moazzeni ◽  
Elham Akbarzadeh
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Metal Organic Framework ◽  
Cost Effective ◽  
Clean Technologies ◽  
Metal Organic ◽  
Organic Framework

The development of efficient and cost-effective catalysts for the oxygen evolution reaction is highly desirable for applications that are based on sustainable and clean technologies. In this study, we report...

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.

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
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