Electrocatalytic performance evaluation of cobalt hydroxide and cobalt oxide thin films for oxygen evolution reaction

2018 ◽  
Vol 427 ◽  
pp. 253-259 ◽  
Author(s):  
P.T. Babar ◽  
A.C. Lokhande ◽  
B.S. Pawar ◽  
M.G. Gang ◽  
Eunjin Jo ◽  
...  
Keyword(s):  
Thin Films ◽  
Performance Evaluation ◽  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Cobalt Hydroxide ◽  
Oxide Thin Films ◽  
Electrocatalytic Performance

scholarly journals Effects of Annealing Temperature on the Oxygen Evolution Reaction Activity of Copper–Cobalt Oxide Nanosheets

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 657
Author(s):  
Geul Han Kim ◽  
Yoo Sei Park ◽  
Juchan Yang ◽  
Myeong Je Jang ◽  
Jaehoon Jeong ◽  
...  
Keyword(s):  
High Activity ◽  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
Cobalt Hydroxide ◽  
Ni Foam ◽  
Electron Conduction

Developing high performance, highly stable, and low-cost electrodes for the oxygen evolution reaction (OER) is challenging in water electrolysis technology. However, Ir- and Ru-based OER catalysts with high OER efficiency are difficult to commercialize as precious metal-based catalysts. Therefore, the study of OER catalysts, which are replaced by non-precious metals and have high activity and stability, are necessary. In this study, a copper–cobalt oxide nanosheet (CCO) electrode was synthesized by the electrodeposition of copper–cobalt hydroxide (CCOH) on Ni foam followed by annealing. The CCOH was annealed at various temperatures, and the structure changed to that of CCO at temperatures above 250 °C. In addition, it was observed that the nanosheets agglomerated when annealed at 300 °C. The CCO electrode annealed at 250 °C had a high surface area and efficient electron conduction pathways as a result of the direct growth on the Ni foam. Thus, the prepared CCO electrode exhibited enhanced OER activity (1.6 V at 261 mA/cm2) compared to those of CCOH (1.6 V at 144 mA/cm2), Co3O4 (1.6 V at 39 mA/cm2), and commercial IrO2 (1.6 V at 14 mA/cm2) electrodes. The optimized catalyst also showed high activity and stability under high pH conditions, demonstrating its potential as a low cost, highly efficient OER electrode material.

Fast microwave-induced synthesis of solid cobalt hydroxide nanorods and their thermal conversion into porous cobalt oxide nanorods for efficient oxygen evolution reaction

2019 ◽  
Vol 3 (7) ◽  
pp. 1713-1719 ◽  
Author(s):  
Dattatray S. Dhawale ◽  
Pradnya Bodhankar ◽  
Neharani Sonawane ◽  
Pradip B. Sarawade
Keyword(s):  
Cobalt Oxide ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Thermal Conversion ◽  
Cobalt Hydroxide ◽  
Highly Efficient ◽  
Oxide Nanorods ◽  
Electrochemical Devices ◽  
Nonprecious Metal

Oxygen evolution reaction (OER) in water splitting is one of the most critical and more demanding half-reactions in electrochemical devices; therefore, the design of highly efficient and nonprecious metal-based electrocatalysts is required.

scholarly journals Mesoporous Ruthenium/Ruthenium Oxide Thin Films: Active Electrocatalysts for the Oxygen Evolution Reaction

2017 ◽  
Vol 4 (10) ◽  
pp. 2480-2485 ◽  
Author(s):  
Jakob Kibsgaard ◽  
Thomas R. Hellstern ◽  
Shin-Jung Choi ◽  
Benjamin N. Reinecke ◽  
Thomas F. Jaramillo
Keyword(s):  
Thin Films ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Ruthenium Oxide ◽  
Oxide Thin Films

scholarly journals Self-supported porous Cobalt Oxide Nanowires with enhanced Electrocatalytic performance toward Oxygen evolution reaction

2016 ◽  
Vol 128 (12) ◽  
pp. 1879-1885 ◽  
Author(s):  
HAN XIA ◽  
ZHEN PENG ◽  
CUNCAI L ◽  
YAOXING ZHAO ◽  
JINHUI HAO ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Oxide Nanowires ◽  
Electrocatalytic Performance

Pulsed laser deposition of porous N-carbon supported cobalt (oxide) thin films for highly efficient oxygen evolution

2016 ◽  
Vol 52 (80) ◽  
pp. 11947-11950 ◽  
Author(s):  
Bita Bayatsarmadi ◽  
Yao Zheng ◽  
Carlo Spartaco Casari ◽  
Valeria Russo ◽  
Shi-Zhang Qiao
Keyword(s):  
Thin Films ◽  
Oxide Film ◽  
Pulsed Laser Deposition ◽  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Oxide Thin Films ◽  
Highly Efficient

A robust porous N-carbon supported cobalt (oxide) film has been developed by pulsed laser deposition as a highly efficient OER electrode.

Improvement of structural, optical and magnetic properties of cobalt oxide thin films by doping with iron

2021 ◽  
Vol 127 (7) ◽  
Author(s):  
Ayse Kucukarslan ◽  
Esra Kus ◽  
Emrah Sarica ◽  
Idris Akyuz ◽  
Vildan Bilgin ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Cobalt Oxide ◽  
Oxide Thin Films ◽  
Optical And Magnetic Properties
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