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Tri-functional electrocatalysis with mass transfer-optimized 3D NiCo alloy for continuous energy conversion system.
Gangwen Fu1, Yu Tian2, Yong Gao3
1Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an 710072, China; Key Laboratory of Flexible Electronics of Zhejiang Province, Ningbo Institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo 315103, China.
Journal of Colloid and Interface Science
|February 6, 2026
Summary
This study developed a novel 3D electrode using nickel-cobalt alloy and cobalt-nanocarbon for enhanced electrocatalysis. The material improves mass transfer, enabling stable operation in water electrolysis and efficient zinc-air batteries.
Area of Science:
- Materials Science
- Electrochemistry
- Chemical Engineering
Background:
- Mass transfer limitations impede electrocatalyst efficiency in gas reactions.
- Designing porous structures is crucial for efficient reactant/product transport.
- Overcoming these limitations is key for high-performance electrocatalytic systems.
Purpose of the Study:
- To develop a robust catalytic system that overcomes mass transfer limitations.
- To improve the efficiency and stability of electrocatalytic processes.
- To enable practical implementation of 3D electrodes in mass transfer-limited reactions.
Main Methods:
- Fabrication of a nickel-cobalt (NiCo) alloy using digital light processing (DLP).
- In situ incorporation of cobalt-nanocarbon (Co NC) active material.
- Structural design to promote bubble mass-transfer kinetics.
Main Results:
- The NiCo alloy with Co NC demonstrated enhanced performance in multiple catalytic reactions.
- The water electrolysis device operated stably for over 500 hours at 500 mA cm⁻².
- The zinc-air battery achieved a peak power density of 73.5 mW cm⁻² and over 300 hours of durability.
- The integrated device generated hydrogen continuously day and night.
Conclusions:
- The developed 3D electrode effectively addresses mass transfer limitations in electrocatalysis.
- The strategy offers a reliable approach for practical applications of 3D electrodes.
- This work provides a reference for designing efficient mass transfer systems.
Keywords:
Bubble behaviorDigital light processingFunctional electrodeIntegrated deviceOverall water splittingZn-air batteryMore Related Videos
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