Revisiting solar hydrogen production through photovoltaic-electrocatalytic and photoelectrochemical water splitting

2021, Volume 15, Issue 3

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Frontiers in Energy >> 2021, Volume 15, Issue 3 doi: 10.1007/s11708-021-0745-0

Revisiting solar hydrogen production through photovoltaic-electrocatalytic and photoelectrochemical water splitting

Available online: 2021-09-15

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Abstract

Photoelectrochemical (PEC) water splitting is regarded as a promising way for solar hydrogen production, while the fast development of photovoltaic-electrolysis (PV-EC) has pushed PEC research into an embarrassed situation. In this paper, a comparison of PEC and PV-EC in terms of efficiency, cost, and stability is conducted and briefly discussed. It is suggested that the PEC should target on high solar-to-hydrogen efficiency based on cheap semiconductors in order to maintain its role in the technological race of sustainable hydrogen production.

Keywords

hydrogen production ; photovoltaic ; electrocatalysis ; photoelectrocatalysis ; water splitting

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