Electrocatalytic Oxygen Evolution by Hierarchically Structured Cobalt–Iron Composites
Source abstract
Abstract
The development of scalable routes to highly active and efficient oxygen evolution reaction (OER) electrocatalysts based on earth-abundant materials is crucial for post-fossil fuel energy schemes. Here, we demonstrate how commercial copper foam electrodes can be functionalized for water oxidation using a facile electrodeposition process. The resulting composite electrode features hierarchically structured cobalt–iron-based catalyst particles, which offer channel-like structures for the transport of electrolyte and release of oxygen gas bubbles. We report high electrocatalytic OER performance as demonstrated by high current densities at low overpotentials (293 mV at j = 50 mA cm–2) and long-term stability under technologically relevant alkaline conditions (>24 h in 1.0 M aqueous KOH).
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
Helmholtz Institute Ulm, Electrochemical Energy Storage (HIU), Helmholtzstr. 11, 89081 Ulm, Germany
Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081 Ulm, Germany
Funding
Helmholtz-Gemeinschaft · Deutsche Forschungsgemeinschaft · China Scholarship Council · Alexander von Humboldt-Stiftung · Universit?t Ulm
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