skip to main content

Title: Photoelectrochemical hydrogen production

The large-scale production of hydrogen utilizing energy provided by a renewable source to split water is one of the most ambitious long-term goals of the U.S. Department of Energy`s Hydrogen Program. One promising option to meet this goal is direct photoelectrolysis in which light absorbed by semiconductor-based photoelectrodes produces electrical power internally to split water into hydrogen and oxygen. Under this program, direct solar-to-chemical conversion efficiencies as high as 7.8 % have been demonstrated using low-cost, amorphous-silicon-based photoelectrodes. Detailed loss analysis models indicate that solar-to-chemical conversion greater than 10% can be achieved with amorphous-silicon-based structures optimized for hydrogen production. In this report, the authors describe the continuing progress in the development of thin-film catalytic/protective coatings, results of outdoor testing, and efforts to develop high efficiency, stable prototype systems.
Authors:
; ;  [1]
  1. Univ. of Hawaii, Honolulu, HI (United States)
Publication Date:
OSTI Identifier:
449145
Report Number(s):
NREL/CP--430-21968-Vol.1; CONF-9605195--Vol.1
ON: DE97000053; TRN: 97:001172-0017
Resource Type:
Conference
Resource Relation:
Conference: 1996 annual hydrogen peer review for DOE, Miami, FL (United States), 1-3 May 1996; Other Information: PBD: Oct 1996; Related Information: Is Part Of Proceedings of the 1996 US DOE hydrogen program review. Volume 1; PB: 575 p.
Research Org:
National Renewable Energy Lab., Golden, CO (United States)
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN FUEL; PHOTOELECTROCHEMICAL CELLS; HYDROGEN PRODUCTION; SILICON; AMORPHOUS STATE