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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
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Heterostructured Electrocatalysts for Hydrogen Evolution Reaction Under Alkaline Conditions
Jumeng Wei1,2, Min Zhou3, Anchun Long2
1College of Chemistry and Materials Engineering, Anhui Science and Technology University, Bengbu, 233100, People's Republic of China.
Nano-Micro Letters
|November 23, 2018
Summary
Heterostructured catalysts significantly boost hydrogen evolution reaction (HER) kinetics in alkaline media, overcoming slow proton availability. These advanced materials show great promise for efficient hydrogen production via water electrolysis.
Area of Science:
- Electrochemistry
- Materials Science
- Catalysis
Background:
- The hydrogen evolution reaction (HER) is crucial for hydrogen production via water electrolysis.
- Alkaline media offer electrode stability but present kinetic challenges due to low proton concentration.
- Heterostructured catalysts leverage synergistic effects at interfaces to enhance HER performance.
Purpose of the Study:
- To review recent advances in heterostructured catalysts for alkaline HER.
- To discuss strategies for accelerating the Volmer step in alkaline HER.
- To provide design principles for future heterostructured electrocatalysts.
Main Methods:
- Literature review of representative and recent heterostructured HER catalysts.
- Analysis of HER principles and kinetics in alkaline conditions.
- Focus on catalyst design for enhanced proton availability and reaction rates.
Main Results:
- Heterostructured catalysts, including noble-metal-based and noble-metal-free types, exhibit high activity for alkaline HER.
- Performance of advanced heterostructures approaches or surpasses commercial Pt/C catalysts.
- Synergistic effects at interfaces are key to enhancing catalytic activity.
Conclusions:
- Heterostructured catalysts are a promising avenue for efficient alkaline HER.
- Accelerating the Volmer step is critical for improving reaction rates.
- Further research into catalyst design principles will drive future advancements in electrocatalysis.
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