Chemical Bath Deposition of NiFe Alloy Anode for Efficient Alkaline Water Electrolyzer Integration
Source abstract
Abstract
Abstract Green hydrogen production from water splitting is a feasible way for intermittent renewable energy storage and utilization, where the exploration and scale‐up preparation of high‐performance anodic oxygen evolution electrocatalysts are critical prerequisites for its industrial‐level applications. Herein, a chemical bath deposition of FeNi3 intermetallic alloys onto Ni mesh support is performed, which delivers a current density of 0.62 A cm−2 at 1.72 V versus reversible hydrogen electrode for alkaline water oxidation in 1 m KOH and an excellent electrolysis stability at 0.2 A cm−2 for over 300 h. Moreover, via 3D computational fluid dynamics simulation and flow field optimization, a homogeneous deposition of ≈5400 cm2 NiFe anode is demonstrated within 4 min using the developed flow bath reactor. Once integrating the as‐prepared NiFe anodes into alkaline electrolyzer stack, the voltage variation between each unit cell is below 40 mV at a total operation current of 71 A, or ca. current density of 0.2 A cm−2, confirming the uniformity of this batch synthesis protocol and its great potential for industrial alkaline water electrolysis.
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Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
China‐UK Low Carbon College Shanghai Jiao Tong University Shanghai 201306 China
Interdisciplinary Research Center School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China
Huaneng Clean Energy Research Institute Beijing 102209 China
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Collaborative Innovation Center of Chemistry for Energy Materials Department of Chemistry Fudan University Shanghai 200438 China
Department of Chemical and Biomolecular Engineering Institute of Emergent Materials Sogang University Seoul 04107 Republic of Korea
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China · Ministry of Trade, Industry and Energy · Science and Technology Innovation Plan Of Shanghai Science and Technology Commission · National Research Foundation of Korea · Ministry of Science and ICT, South Korea
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