Non‐Platinum Group Metal Electrocatalysts toward Efficient Hydrogen Oxidation Reaction

2021 ◽  
pp. 2010633
Author(s):  
Guoqiang Zhao ◽  
Jian Chen ◽  
Wenping Sun ◽  
Hongge Pan
Keyword(s):  
Oxidation Reaction ◽  
Hydrogen Oxidation ◽  
Platinum Group Metal ◽  
Hydrogen Oxidation Reaction ◽  
Group Metal ◽  
Platinum Group

scholarly journals Bimetallic nickel-molybdenum/tungsten nanoalloys for high-efficiency hydrogen oxidation catalysis in alkaline electrolytes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yu Duan ◽  
Zi-You Yu ◽  
Li Yang ◽  
Li-Rong Zheng ◽  
Chu-Tian Zhang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Hydrogen Oxidation ◽  
Carbon Monoxide Poisoning ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Oxidation Catalysis ◽  
Hydrogen Oxidation Reaction ◽  
Group Metal ◽  
Alkaline Electrolytes ◽  
Platinum Group

Abstract Hydroxide exchange membrane fuel cells offer possibility of adopting platinum-group-metal-free catalysts to negotiate sluggish oxygen reduction reaction. Unfortunately, the ultrafast hydrogen oxidation reaction (HOR) on platinum decreases at least two orders of magnitude by switching the electrolytes from acid to base, causing high platinum-group-metal loadings. Here we show that a nickel-molybdenum nanoalloy with tetragonal MoNi4 phase can catalyze the HOR efficiently in alkaline electrolytes. The catalyst exhibits a high apparent exchange current density of 3.41 milliamperes per square centimeter and operates very stable, which is 1.4 times higher than that of state-of-the-art Pt/C catalyst. With this catalyst, we further demonstrate the capability to tolerate carbon monoxide poisoning. Marked HOR activity was also observed on similarly designed WNi4 catalyst. We attribute this remarkable HOR reactivity to an alloy effect that enables optimum adsorption of hydrogen on nickel and hydroxyl on molybdenum (tungsten), which synergistically promotes the Volmer reaction.

scholarly journals Nickel–copper supported on a carbon black hydrogen oxidation catalyst integrated into an anion-exchange membrane fuel cell

2018 ◽  
Vol 2 (10) ◽  
pp. 2268-2275 ◽  
Author(s):  
Aaron Roy ◽  
Morteza R. Talarposhti ◽  
Stanley J. Normile ◽  
Iryna V. Zenyuk ◽  
Vincent De Andrade ◽  
...  
Keyword(s):  
Oxidation Reaction ◽  
Hydrogen Oxidation ◽  
Platinum Group Metal ◽  
Anion Exchange Membrane ◽  
Oxidation Catalyst ◽  
Alloy Nanoparticles ◽  
Hydrogen Oxidation Reaction ◽  
Nickel Copper ◽  
Alkaline Membrane ◽  
Exchange Membrane

This work introduces the first practical platinum group metal-free (PGM-free) electrocatalyst for the hydrogen oxidation reaction (HOR) in alkaline membrane fuel cells (AMFC), based on nickel-rich Ni95Cu5-alloy nanoparticles.

Dependence of hydrogen oxidation reaction on water vapor in anode-supported solid oxide fuel cells

2021 ◽  
Vol 362 ◽  
pp. 115565
Author(s):  
R.A. Budiman ◽  
T. Ishiyama ◽  
K.D. Bagarinao ◽  
H. Kishimoto ◽  
K. Yamaji ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Water Vapor ◽  
Solid Oxide Fuel Cells ◽  
Oxidation Reaction ◽  
Hydrogen Oxidation ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hydrogen Oxidation Reaction

Carbide-Supported PtRu Catalysts for Hydrogen Oxidation Reaction in Alkaline Electrolyte

ACS Catalysis ◽  
2021 ◽  
pp. 932-947
Author(s):  
Eliran R. Hamo ◽  
Ramesh K. Singh ◽  
John C. Douglin ◽  
Sian Chen ◽  
Mohamed Ben Hassine ◽  
...  
Keyword(s):  
Oxidation Reaction ◽  
Hydrogen Oxidation ◽  
Alkaline Electrolyte ◽  
Hydrogen Oxidation Reaction ◽  
Ptru Catalysts

scholarly journals Bimetallic platinum group metal-free catalysts for high power generating microbial fuel cells

2017 ◽  
Vol 366 ◽  
pp. 18-26 ◽  
Author(s):  
Mounika Kodali ◽  
Carlo Santoro ◽  
Sergio Herrera ◽  
Alexey Serov ◽  
Plamen Atanassov
Keyword(s):  
Fuel Cells ◽  
High Power ◽  
Microbial Fuel Cells ◽  
Platinum Group Metal ◽  
Metal Free ◽  
Group Metal ◽  
Platinum Group
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