scholarly journals Selective acid leaching: a simple way to engineer cobalt oxide nanostructures for the electrochemical oxygen evolution reaction

2019 ◽  
Vol 7 (40) ◽  
pp. 23130-23139 ◽  
Author(s):  
Mingquan Yu ◽  
Kendra Solveig Belthle ◽  
Cengiz Tüysüz ◽  
Harun Tüysüz
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Acid Leaching ◽  
Oxide Nanostructures ◽  
Electrochemical Oxygen

A facile and scalable strategy via diluted-HCl leaching was developed to prepare sub-5 nm Co3O4 nanocrystals for electrochemical water oxidation.

Boosting electrochemical water oxidation through replacement of Oh Co sites in cobalt oxide spinel with manganese

2017 ◽  
Vol 53 (57) ◽  
pp. 8018-8021 ◽  
Author(s):  
Prashanth W. Menezes ◽  
Arindam Indra ◽  
Vitaly Gutkin ◽  
Matthias Driess
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Lattice Structure ◽  
Active Species ◽  
Structure Activity ◽  
Spinel Lattice ◽  
Oxide Spinel

Effect of substitution in the spinel lattice, structure–activity relation and nature of active species involved during oxygen evolution reaction were uncovered in the manganese cobalt oxide (MCO).

scholarly journals Laser Fragmentation‐Induced Defect‐Rich Cobalt Oxide Nanoparticles for Electrochemical Oxygen Evolution Reaction

ChemSusChem ◽  
2019 ◽  
Vol 13 (3) ◽  
pp. 520-528 ◽  
Author(s):  
Mingquan Yu ◽  
Friedrich Waag ◽  
Candace K. Chan ◽  
Claudia Weidenthaler ◽  
Stephan Barcikowski ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Oxide Nanoparticles ◽  
Cobalt Oxide Nanoparticles ◽  
Electrochemical Oxygen

Hydrothermal synthesis of polydopamine-functionalized cobalt-doped lanthanum nickelate perovskite nanorods for efficient water oxidation in alkaline solution

Nanoscale ◽  
2019 ◽  
Vol 11 (41) ◽  
pp. 19579-19585 ◽  
Author(s):  
Yujie Han ◽  
Zhijun Zhu ◽  
Liang Huang ◽  
Yujing Guo ◽  
Yanling Zhai ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Oxygen Evolution ◽  
Alkaline Solution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Intrinsic Activity ◽  
Lanthanum Nickelate ◽  
Electrochemical Oxygen

Polydopamine functionalized cobalt-doped lanthanum nickelate perovskite nanorods for with high intrinsic activity for electrochemical oxygen evolution reaction.

scholarly journals Synthetic control and empirical prediction of redox potentials for Co4O4 cubanes over a 1.4 V range: implications for catalyst design and evaluation of high-valent intermediates in water oxidation

2017 ◽  
Vol 8 (6) ◽  
pp. 4274-4284 ◽  
Author(s):  
Andy I. Nguyen ◽  
Jianing Wang ◽  
Daniel S. Levine ◽  
Micah S. Ziegler ◽  
T. Don Tilley
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Catalyst Design ◽  
Synthetic Control ◽  
Redox Potentials ◽  
Empirical Prediction ◽  
High Valent

The oxo-cobalt cubane unit [Co4O4] is of interest as a homogeneous oxygen-evolution reaction (OER) catalyst, and as a functional mimic of heterogeneous cobalt oxide OER catalysts.

Enhanced Catalysis of the Electrochemical Oxygen Evolution Reaction by Iron(III) Ions Adsorbed on Amorphous Cobalt Oxide

ACS Catalysis ◽  
2017 ◽  
Vol 8 (2) ◽  
pp. 807-814 ◽  
Author(s):  
Luo Gong ◽  
Xin Yu Esther Chng ◽  
Yonghua Du ◽  
Shibo Xi ◽  
Boon Siang Yeo
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrochemical Oxygen

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.

Controllable growth of graphdiyne layered nanosheets for high-performance water oxidation

2021 ◽  
Author(s):  
Shuya Zhao ◽  
Yurui Xue ◽  
Zhongqiang Wang ◽  
Zhiqiang Zheng ◽  
Xiaoyu Luan ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Low Cost ◽  
Highly Active ◽  
Controllable Growth

Developing highly active, stable and low-cost electrocatalysts capable of an efficient oxygen evolution reaction (OER) is urgent and challenging.

Bifunctional citrate-Ni0.9Co0.1(OH)x layer coated fluorine-doped hematite for simultaneous hole extraction and injection towards efficient photoelectrochemical water oxidation

Nanoscale ◽  
2021 ◽  
Author(s):  
Peng Wang ◽  
Feng Li ◽  
Xuefeng Long ◽  
Tong Wang ◽  
Huan Chai ◽  
...  
Keyword(s):  
Surface Modification ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Surface Oxygen ◽  
Co Catalyst ◽  
Photoelectrochemical Water Oxidation

Surface modification by loading a water oxidation co-catalyst (WOC) is generally considered to be an efficient means to optimize the sluggish surface oxygen evolution reaction (OER) of hematite photoanode for...

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.

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...

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