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).

Electrochemical water oxidation by cobalt-Prussian blue coordination polymer and theoretical studies of the electronic structure of the active species

2019 ◽  
Vol 48 (15) ◽  
pp. 4811-4822 ◽  
Author(s):  
Bruno M. Pires ◽  
Pãmyla L. dos Santos ◽  
Vera Katic ◽  
Stefan Strohauer ◽  
Richard Landers ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Coordination Polymer ◽  
Prussian Blue ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Species ◽  
Theoretical Studies ◽  
Earth Abundant ◽  
Neutral Conditions

The search for earth-abundant metal-based catalysts for the oxygen evolution reaction (OER) that operates in neutral conditions is a challenge in the field of sustainable energy.

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.

Light-induced water oxidation by polymorphs of the Zn–Co–Ni oxide spinel catalyst: a comparative study

2019 ◽  
Vol 3 (3) ◽  
pp. 786-792 ◽  
Author(s):  
Rahul Sakla ◽  
Rahul Kaushik ◽  
Vijay Kumar ◽  
D. Amilan Jose ◽  
Amrita Ghosh ◽  
...  
Keyword(s):  
Comparative Study ◽  
High Activity ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Spinel Type ◽  
Oxide Spinel ◽  
Ni Oxide

Spinel-type catalyst Zn0.2Ni0.8Co2O4 exhibits high activity and stability for the photocatalytic 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.

scholarly journals A CoV2O4 precatalyst for the oxygen evolution reaction: highlighting the importance of postmortem electrocatalyst characterization

2021 ◽  
Author(s):  
Samuel E. Michaud ◽  
Michael T. Riehs ◽  
Wei-Jie Feng ◽  
Chia-Cheng Lin ◽  
Charles C. L. McCrory
Keyword(s):  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Species

Postmortem analysis of a CoV2O4 catalyst for oxygen evolution reveals the active species is likely a vanadium-free amorphous cobalt oxide.

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.

Oriental and robust anchoring of Fe via anodic interfacial coordination assembly on ultrathin Co hydroxides for efficient water oxidation

Nanoscale ◽  
2021 ◽  
Author(s):  
Ya-Nan Zhou ◽  
Ruo-Yao Fan ◽  
Yu-Ning Cao ◽  
Hui-Ying Wang ◽  
Bin Dong ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites

The oriental distribution and strong conjunction of Fe active sites in multiple metals hydroxides are very crucial to modulate the activity and stability for efficient oxygen evolution reaction (OER). Whereas,...

Sign in / Sign up

Export Citation Format

Share Document