IrO2/LiLa2IrO6 as a Robust Electrocatalyst for Oxygen Evolution Reaction in Acidic Media

2022 ◽  
Author(s):  
Huihui Liu ◽  
Haeseong Jang ◽  
Yu Wang ◽  
Min Gyu Kim ◽  
Haisen Li ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Mixed Oxides ◽  
Acidic Media ◽  
Acid Media ◽  
Excellent Activity ◽  
The Cost

Recently reported non-noble metal-iridium mixed oxides not only exhibit excellent activity for the oxygen evolution reaction in acid media, but also reduce the cost. However, most of them fail to...

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

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...

Heterostructure of core-shell IrCo@IrCoOx as efficient and stable catalysts for oxygen evolution reaction

2021 ◽  
Author(s):  
Xiaoping Ma ◽  
Lili Deng ◽  
Manting Lu ◽  
Yi He ◽  
Shuai Zou ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Proton Exchange Membrane ◽  
Precious Metals ◽  
Life Time ◽  
Proton Exchange ◽  
Core Shell ◽  
Large Current ◽  
Amorphous Metal Oxide

Abstract Although researches on non-noble metal electrocatalysts have been made some progress recently, their performance in proton exchange membrane water electrolyzer (PEMWE) is still incomparable to that of noble-metal-based catalysts. Therefore, it is a more practical way to improve the utilization of precious metals in electrocatalysts for oxygen evolution reaction (OER) in the acidic medium. Herein, nanostructured IrCo@IrCoOx core-shell electrocatalysts composed of IrCo alloy core and IrCoOx shell were synthesized through a simple colloidally synthesis and calcination method. As expected, the hybrid IrCo-200 NPs with petal-like morphology show the best OER activities in acidic electrolytes. They deliver lower overpotential and better electrocatalytic kinetics than pristine IrCo alloy and commercial Ir/C, reaching a low overpotential (j = 10 mA/cm2) of 259 mV (vs. RHE) and a Tafel slope of 59 mV dec−1. The IrCo-200 NPs displayed robust durability with life time of about 55 h in acidic solution under a large current density of 50 mA/cm2. The enhanced electrocatalytic activity may be associated with the unique metal/amorphous metal oxide core-shell heterostructure, allowing the improved charge transferability. Moreover, the *OH-rich amorphous shell functions as the active site for OER and prevents the further dissolution of the metallic core and thus ensures high stability.

Low-Cost Pb-Co-Sn film for the Oxygen Evolution Reaction in Acid Media

2021 ◽  
Author(s):  
Marisol Maril ◽  
Pablo Tobosque ◽  
Nataly Cisternas ◽  
Marie-Paule Delplancke ◽  
Jean Luc Delplancke ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
Acid Media

Effect of Adding CeO2to RuO2-IrO2Mixed Nanocatalysts: Activity towards the Oxygen Evolution Reaction and Stability in Acidic Media

2015 ◽  
Vol 2 (8) ◽  
pp. 1128-1137 ◽  
Author(s):  
Thomas Audichon ◽  
Sophie Morisset ◽  
Teko W. Napporn ◽  
K. Boniface Kokoh ◽  
Clément Comminges ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Acidic Media

Robust noble metal-based electrocatalysts for oxygen evolution reaction

2019 ◽  
Vol 48 (12) ◽  
pp. 3181-3192 ◽  
Author(s):  
Qiurong Shi ◽  
Chengzhou Zhu ◽  
Dan Du ◽  
Yuehe Lin
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Anodic Reaction ◽  
Highly Efficient ◽  
Acidic Electrolyte

The oxygen evolution reaction (OER) is a kinetically sluggish anodic reaction that requires rationalized compositions and structures for achieving highly efficient and reliable noble metal-based electrocatalysts in acidic electrolyte.

scholarly journals Non‐Noble‐Metal‐Based Electrocatalysts toward the Oxygen Evolution Reaction

2020 ◽  
Vol 30 (15) ◽  
pp. 1910274 ◽  
Author(s):  
Zhi‐Peng Wu ◽  
Xue Feng Lu ◽  
Shuang‐Quan Zang ◽  
Xiong Wen (David) Lou
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction
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