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Modular Design of Noble Metal-free Mixed Metal Oxide Electrocatalysts for Complete Water-Splitting.

07:00 EST 7th February 2019 | BioPortfolio

Summary of "Modular Design of Noble Metal-free Mixed Metal Oxide Electrocatalysts for Complete Water-Splitting."

Electrocatalytic water splitting into H2 and O2 is a key technology for carbon-neutral energy. Here, we report a modular materials design leading to noble metal-free composite electrocatalysts, which combine high electrical conductivity, high OER and HER reactivity and high durability. The scalable bottom-up fabrication allows the stable deposition of mixed metal oxide nanostructures with different functionalities on copper foam electrodes. The composite catalyst shows sustained OER and HER activity in 0.1 M aqueous KOH over prolonged periods (t > 10 h) at low overpotentials (
OER:
~300 mV;
HER:
~100 mV) and high faradaic efficiencies (
OER:
~100 %,
HER:
~98 %). The new synthetic approach could give access to a new class of multifunctional, mixed metal oxide composites for challenging energy conversion and storage reactions.

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Journal Details

This article was published in the following journal.

Name: Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Pages:

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