Best Practices in PEC Water Splitting: How to Reliably Measure Solar-to-Hydrogen Efficiency of Photoelectrodes

Review Chemistry, Physical

Recent advances in electrocatalysts for neutral and large-current-density water electrolysis

Yuanlin Xu et al.

Summary: Hydrogen as a clean energy resource is seen as a promising alternative to address energy crisis and environmental pollution. Electrochemical water splitting, including HER and OER, is essential for hydrogen production. Research focusing on developing electrocatalysts for water splitting in neutral conditions has been reviewed, with emphasis on understanding reaction mechanisms, rate-determining steps, and activity correlations. Single-atom catalysts show potential for high efficiency and activity, while three-dimensional freestanding electrodes are a growing trend for large-current-density operations. Challenges and future directions for neutral water electrolysis are discussed to guide the design of electrocatalysts for efficient hydrogen production at scale.

NANO ENERGY (2021)

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Review Chemistry, Physical

Efficiency Accreditation and Testing Protocols for Particulate Photocatalysts toward Solar Fuel Production

Zhiliang Wang et al.

Summary: The article discusses testing protocols for reliable efficiency reporting of photocatalytic overall water splitting based on particulate photocatalysts. It emphasizes the importance of establishing accreditation research laboratories for efficiency certification and proposes the launch of a "best research photocatalyst efficiencies" chart.

JOULE (2021)

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Article Chemistry, Physical

Development of a photoelectrochemically self-improving Si/GaN photocathode for efficient and durable H2 production

Guosong Zeng et al.

Summary: Efficient and durable photoelectrodes are crucial for solar-fuel production. A silicon/gallium nitride photocathode was found to exhibit self-improving behavior for hydrogen production. By forming a gallium oxynitride layer, the catalytic activity of the photocathode was enhanced, leading to sustained operation and improved performance.

NATURE MATERIALS (2021)

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Article Chemistry, Multidisciplinary