4.6 Review

Solar-Driven Hydrogen Production: Recent Advances, Challenges, and Future Perspectives

Journal

ACS ENERGY LETTERS
Volume 7, Issue 3, Pages 1043-1065

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.1c02591

Keywords

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Funding

  1. JSPS KAKENHI [JP18H02065]
  2. Photo-excitonix Project in Hokkaido University
  3. National Natural Science Foundation of China [21633004, 22002060]

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This article provides a comprehensive review of solar H-2 production technologies, with a particular focus on the high solar-to-H-2 conversion efficiency achieved by different routes. Comparative analysis and evaluation are conducted to assess the commercial feasibility of these technologies compared with current industrial H-2 production processes. Additionally, the challenges and prospects of future research on solar H-2 production technologies are presented.
Solar H-2 production is considered as a potentially promising way to utilize solar energy and tackle climate change stemming from the combustion of fossil fuels. Photocatalytic, photoelectrochemical, photovoltaic-electrochemical, solar thermochemical, photothermal catalytic, and photobiological technologies are the most intensively studied routes for solar H-2 production. In this Focus Review, we provide a comprehensive review of these technologies. After a brief introduction of the principles and mechanisms of these technologies, the recent achievements in solar H-2 production are summarized, with a particular focus on the high solar-to-H-2 (STH) conversion efficiency achieved by each route. We then comparatively analyze and evaluate these technologies based on the metrics of STH efficiency, durability, economic viability, and environmental sustainability, aiming to assess the commercial feasibility of these solar technologies compared with current industrial H-2 production processes. Finally, the challenges and prospects of future research on solar H-2 production technologies are presented.

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