Atomic-scale topochemical preparation of crystalline Fe3+-doped β-Ni(OH)2 for an ultrahigh-rate oxygen evolution reaction

2017 ◽  
Vol 5 (17) ◽  
pp. 7753-7758 ◽  
Author(s):  
Kaiyue Zhu ◽  
Huanying Liu ◽  
Mingrun Li ◽  
Xuning Li ◽  
Junhu Wang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
State Of The Art ◽  
The State ◽  
Atomic Scale

Fe3+-doped β-Ni(OH)2, prepared via an atomic-scale topochemical transformation route, exhibits much higher oxygen evolution activity than the state-of-the-art IrO2.

scholarly journals Recent advances in understanding oxygen evolution reaction mechanisms over iridium oxide

2021 ◽  
Author(s):  
Takahiro Naito ◽  
Tatsuya Shinagawa ◽  
Takeshi Nishimoto ◽  
Kazuhiro Takanabe
Keyword(s):  
Reaction Mechanism ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Reaction Mechanisms ◽  
State Of The Art ◽  
Iridium Oxide ◽  
The State ◽  
Computational Studies ◽  
Recent Advances ◽  
Iridium Oxides

Recent spectroscopic and computational studies concerning the oxygen evolution reaction over iridium oxides are reviewed to provide the state-of-the-art understanding of its reaction mechanism.

Revealing the structural transformation of rutile RuO2via in situ X-ray absorption spectroscopy during the oxygen evolution reaction

2019 ◽  
Vol 48 (21) ◽  
pp. 7122-7129 ◽  
Author(s):  
Chia-Jui Chang ◽  
You-Chiuan Chu ◽  
Hao-Yu Yan ◽  
Yen-Fa Liao ◽  
Hao Ming Chen
Keyword(s):  
Oxygen Evolution ◽  
Structural Transformation ◽  
Absorption Spectroscopy ◽  
Oxygen Evolution Reaction ◽  
The State ◽  
X Ray ◽  
Alkaline Conditions ◽  
X Ray Absorption ◽  
State Of Art

The state-of-art RuO2 catalyst for the oxygen evolution reaction (OER) is measured by using in situ X-ray absorption spectroscopy (XAS) to elucidate the structural transformation during catalyzing the reaction in acidic and alkaline conditions.

Ultrathin RuRh@(RuRh)O2 core@shell nanosheets as stable oxygen evolution electrocatalysts

2020 ◽  
Vol 8 (31) ◽  
pp. 15746-15751 ◽  
Author(s):  
Kai Wang ◽  
Bolong Huang ◽  
Weiyu Zhang ◽  
Fan Lv ◽  
Yi Xing ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
State Of The Art ◽  
The State ◽  
Oxide Shell ◽  
Core Shell ◽  
Stable Oxygen ◽  
Better Than

We report a novel architecture of ultrathin RuRh@(RuRh)O2 core/shell nanosheets with a core of ultrathin metallic RuRh nanosheets and a shell of (RuRh)O2 oxides as a superb electrocatalyst toward the oxgen evolution reaction (OER), better than most of the state-of-the-art Ru-based or Ir-based electrocatalysts. Moreover, the RuRh@(RuRh)O2 core/shell nanosheets exhibit good durability because the (RuRh)O2 oxide shell protects the normally labile RuRh NS core against dissolution during the OER process.

Ultrathin vanadium hydroxide nanosheets assembled on the surface of Ni–Fe-layered hydroxides as hierarchical catalysts for the oxygen evolution reaction

2021 ◽  
Author(s):  
Jiaruo Tang ◽  
Xiaoli Jiang ◽  
Lin Tang ◽  
Yao Li ◽  
Qiaoji Zheng ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
State Of The Art ◽  
Metal Catalysts ◽  
Noble Metal Catalysts ◽  
Electrolytic Hydrogen

Developing state-of-the-art non-noble metal catalysts for the oxygen evolution reaction holds a key to the production of electrolytic hydrogen.

scholarly journals Oxygen evolution reaction: a perspective on a decade of atomic scale simulations

2020 ◽  
Vol 11 (11) ◽  
pp. 2943-2950 ◽  
Author(s):  
Spyridon Divanis ◽  
Tugce Kutlusoy ◽  
Ida Marie Ingmer Boye ◽  
Isabela Costinela Man ◽  
Jan Rossmeisl
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Atomic Scale ◽  
Research Groups ◽  
Multiple Strategies

Multiple strategies to overcome the intrinsic limitations of the oxygen evolution reaction (OER) have been proposed by numerous research groups.

scholarly journals Atomic‐Scale CoO x Species in Metal–Organic Frameworks for Oxygen Evolution Reaction

2017 ◽  
Vol 27 (36) ◽  
pp. 1702546 ◽  
Author(s):  
Shuo Dou ◽  
Chung‐Li Dong ◽  
Zhe Hu ◽  
Yu‐Cheng Huang ◽  
Jeng‐lung Chen ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Organic Frameworks ◽  
Atomic Scale ◽  
Metal Organic

Tailoring Oxygen Evolution Reaction Activity of Metal-Oxide Spinel Nanoparticles via Judiciously Regulating Surface-Capping Polymers

2021 ◽  
Author(s):  
Christopher David Sewell ◽  
Zewei Wang ◽  
Yeu-Wei Harn ◽  
Shuang Liang ◽  
Likun Gao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
State Of The Art ◽  
Promising Direction ◽  
Oxide Spinel ◽  
Surface Capping ◽  
Spinel Nanoparticles

High cost and scarcity of the state-of-the-art noble metal-based catalysts represents one of the critical hurdles to be overcome in electrocatalysis. A promising direction is to utilize transition metal-based nanoparticles...

Fundamental understanding of the acidic oxygen evolution reaction: mechanism study and state-of-the-art catalysts

Nanoscale ◽  
2020 ◽  
Vol 12 (25) ◽  
pp. 13249-13275 ◽  
Author(s):  
Zhaoping Shi ◽  
Xian Wang ◽  
Junjie Ge ◽  
Changpeng Liu ◽  
Wei Xing
Keyword(s):  
Reaction Mechanism ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Catalytic Mechanism ◽  
State Of The Art ◽  
Mechanism Study ◽  
Fundamental Understanding

A systematic summary of the acidic OER catalytic mechanism and catalysts is given, and some experimental phenomena are explained.

scholarly journals 3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Weikai Xiang ◽  
Nating Yang ◽  
Xiaopeng Li ◽  
Julia Linnemann ◽  
Ulrich Hagemann ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
3D Structure ◽  
Three Dimensional ◽  
Atom Probe ◽  
Vital Role ◽  
Atomic Scale ◽  
Hydroxyl Groups ◽  
Compositional Distribution

AbstractThe three-dimensional (3D) distribution of individual atoms on the surface of catalyst nanoparticles plays a vital role in their activity and stability. Optimising the performance of electrocatalysts requires atomic-scale information, but it is difficult to obtain. Here, we use atom probe tomography to elucidate the 3D structure of 10 nm sized Co2FeO4 and CoFe2O4 nanoparticles during oxygen evolution reaction (OER). We reveal nanoscale spinodal decomposition in pristine Co2FeO4. The interfaces of Co-rich and Fe-rich nanodomains of Co2FeO4 become trapping sites for hydroxyl groups, contributing to a higher OER activity compared to that of CoFe2O4. However, the activity of Co2FeO4 drops considerably due to concurrent irreversible transformation towards CoIVO2 and pronounced Fe dissolution. In contrast, there is negligible elemental redistribution for CoFe2O4 after OER, except for surface structural transformation towards (FeIII, CoIII)2O3. Overall, our study provides a unique 3D compositional distribution of mixed Co-Fe spinel oxides, which gives atomic-scale insights into active sites and the deactivation of electrocatalysts during OER.

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