Journal Article

FZJ-2022-05739

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Iridium–Nickel Nanoparticle-Based Aerogels for Oxygen Evolution Reaction

Park, S.FZJ*RWTH* ; Utsch, N.FZJ*RWTH* ; Carmo, M.FZJ* ; Shviro, M. (Corresponding author)FZJ* ; Stolten, D.FZJ*RWTH*

2022
ACS Publications Washington, DC

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Please use a persistent id in citations: http://hdl.handle.net/2128/33336  doi:10.1021/acsanm.2c04000

Abstract: Iridium is considered the state-of-the-art electrocatalyst for the oxygen evolution reaction (OER) in acidic media owing to its considerably high activity and stability, yet it is a raw material that is expensive and rare. Here we present a synthesis of a bimetallic hollow aerogel structure based on iridium and nickel prepared by a very simple and environmentally friendly method. Our electrocatalyst was evaluated for the OER in a single electrolysis cell, and it showed an improvement in electrocatalytic performance over time, reaching the current density of commercial IrO2 after 500 h of the stability test, despite half the catalyst loading. Our innovative synthesis approach provides the flexibility to tailor and improve the aerogel structures for other electrochemical devices as well, for example, photoelectrolysis, sensors, and more. In addition, we believe that this study can lead to a better understanding of the fundamental behavior of bimetallic electrocatalysts consisting of mixed compositions with transition metals.

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Contributing Institute(s):

1. Elektrochemische Verfahrenstechnik (IEK-14)

Research Program(s):

1. 1231 - Electrochemistry for Hydrogen (POF4-123) (POF4-123)

Appears in the scientific report 2022

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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