Atomically dispersed Pd catalysts promote the oxygen evolution reaction in acidic media

2021 ◽  
Author(s):  
Fengjuan Qin ◽  
Danni Zhou ◽  
Mengru Sun ◽  
Wenjing Xu ◽  
Hao Tang ◽  
...  
Keyword(s):  
High Activity ◽  
Hydrothermal Method ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Single Atom ◽  
Acidic Media ◽  
Pd Catalysts ◽  
Alloy Catalysts ◽  
Excellent Stability ◽  
Single Atom Alloy

Pd–Pt3Sn single-atom alloy catalysts prepared via a hydrothermal method have high activity and excellent stability in acidic media compared with commercial IrO2.

Self-supported Co-doped FeNi carbonate hydroxide nanosheet array as a highly efficient electrocatalyst towards the oxygen evolution reaction in an alkaline solution

Nanoscale ◽  
2019 ◽  
Vol 11 (22) ◽  
pp. 10595-10602 ◽  
Author(s):  
Yu-Feng Qi ◽  
Qian Wang ◽  
Xiu-Guang Wang ◽  
Zheng-Yu Liu ◽  
Xiao-Jun Zhao ◽  
...  
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Alkaline Solution ◽  
Oxygen Evolution Reaction ◽  
Nickel Foam ◽  
Highly Efficient ◽  
Nanosheet Array ◽  
Carbonate Hydroxide ◽  
Co Doped ◽  
Excellent Stability

A Co-doped FeNi carbonate hydroxide nanosheet array supported on nickel foam served as an efficient oxygen evolution electrocatalyst with a high activity and excellent stability.

scholarly journals Amorphous Metallic NiFeP: A Conductive Bulk Material Achieving High Activity for Oxygen Evolution Reaction in Both Alkaline and Acidic Media

2017 ◽  
Vol 29 (32) ◽  
pp. 1606570 ◽  
Author(s):  
Fei Hu ◽  
Shengli Zhu ◽  
Shuangming Chen ◽  
Yu Li ◽  
Lu Ma ◽  
...  
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Bulk Material ◽  
Acidic Media

scholarly journals Controllable Synthesis of Graphene-Encapsulated NiFe Nanofiber for Oxygen Evolution Reaction Application

2021 ◽  
Vol 5 (12) ◽  
pp. 314
Author(s):  
Mengyang Li ◽  
Jiayi Rong ◽  
Ning Guo ◽  
Susu Chen ◽  
Meiqi Gao ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Alkaline Electrolyte ◽  
Controllable Synthesis ◽  
Low Overpotential ◽  
Alloy Catalysts ◽  
Nobel Metals ◽  
Excellent Stability

Carbon-Encapsulated NiFe Nanofiber NixFey@C-CNFs have been demonstrated to be promising candidates to replace conventional nobel metals-based catalysts for oxygen evolution reaction. Here, we developed a facile method of electrospinning and high temperature carbonization to synthesize NixFey@C-CNFs catalysts. It is proved that Ni3Fe7@C-CNFs exhibited low overpotential (245 mV) and excellent stability in alkaline electrolyte for OER. This work provides a good platform for the synthesis and design of graphene-encapsulated alloy catalysts.

Iridium Oxide Modified with Silver Single Atom for Boosting Oxygen Evolution Reaction in Acidic Media

2021 ◽  
pp. 1588-1595
Author(s):  
Fei-Fei Zhang ◽  
Chuan-Qi Cheng ◽  
Jia-Qi Wang ◽  
Long Shang ◽  
Yi Feng ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Iridium Oxide ◽  
Single Atom ◽  
Acidic Media

Fe-Induced electronic optimization of mesoporous Co–Ni oxide nanosheets as an efficient binder-free electrode for the oxygen evolution reaction

2021 ◽  
Vol 45 (14) ◽  
pp. 6424-6431
Author(s):  
Jingjing Ju ◽  
Jiajia Lu ◽  
Xiaoyue Shi ◽  
Hongwei Zhu ◽  
Han-Pu Liang
Keyword(s):  
Hydrothermal Method ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Mesoporous Structure ◽  
Post Annealing ◽  
Binder Free ◽  
Ni Oxide

An efficient binder-free OER electrode CoNiFeOx/NF with mesoporous structure was synthesized by a facile strategy of hydrothermal method and post-annealing.

Amorphous Iron–Manganese Oxyfluorides, Promising Catalysts for Oxygen Evolution Reaction under Acidic Media

2021 ◽  
Vol 4 (2) ◽  
pp. 1173-1181
Author(s):  
Kévin Lemoine ◽  
Zahra Gohari-Bajestani ◽  
Romain Moury ◽  
Alexandre Terry ◽  
Amandine Guiet ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Acidic Media ◽  
Amorphous Iron ◽  
Iron Manganese

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.

Interfacing RuO2 with Pt to induce efficient charge transfer from Pt to RuO2 for highly efficient and stable oxygen evolution under acidic media

2021 ◽  
Author(s):  
Taehyun Kwon ◽  
Heesu Yang ◽  
Minki Jun ◽  
Taekyung Kim ◽  
Jinwhan Joo ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Acidic Media ◽  
Highly Efficient ◽  
Efficient Charge ◽  
Stable Oxygen ◽  
The Stability

The oxygen evolution reaction (OER) requires a large overpotential which undermines the stability of electrocatalysts, typically IrOx or RuOx. RuOx is particularly vulnerable to high overpotential in acidic media, due...

Adsorption energy as a promising single-parameter descriptor for single atom catalysis in the oxygen evolution reaction

2021 ◽  
Author(s):  
Hai-Cai Huang ◽  
Jun Li ◽  
Yang Zhao ◽  
Jing Chen ◽  
Yu-Xiang Bu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Adsorption Energy ◽  
Oxygen Evolution Reaction ◽  
Single Parameter ◽  
Single Atom ◽  
Highly Efficient

A highly efficient and reliable single-parameter descriptor for offering a strategy to rationally design SACs for the OER.

scholarly journals Intrinsic activity modulation and structural design of NiFe alloy catalysts for an efficient oxygen evolution reaction

2021 ◽  
Author(s):  
Qiaoling Kang ◽  
Dawei Lai ◽  
Wenyin Tang ◽  
Qingyi Lu ◽  
Feng Gao
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Structural Design ◽  
Active Sites ◽  
Intrinsic Activity ◽  
Effective Strategies ◽  
Alloy Catalysts

Effective strategies to increase the intrinsic activity by electronic modulation and to increase the number of active sites by structural design are discussed for improving the oxygen evolution activities of NiFe alloys.

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