再生可能エネルギーからの水素製造技術の現状と課題(<総説特集>水素エネルギー社会への展望II)

概要

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Present status of technologies producing H_2 from inexhaustible water and solar light energy, so called Solar Hydrogen, was introduced. Solar energy is the main source of renewable energy except geothermal energy. First, as a practical H_2 production technology, the combination of solar cell and electrolysis, so called PV/Electrolysis, was discussed in terms of economical point of view. It is pointed out the necessity of pilot-scale demonstration for obtaining problems to solve toward industrialization. Second, photoelectrochemical process using solar cell materials was introduced. This process has a higher efficiency than that of PV/Electrolysis, however, the cost and long-term stability of these materials are subjects for the future. Then, recently developed tandem cell composed a metal oxide semiconductor thin film photoelectrode and a dye-sensitized solar cell, which is promising economically, was introduced. Finally, current progress of photo-catalytic water splitting system, which is the most promising technology in its simplicity and theoretical high efficiency, was introduced. However, this technology is still standing on the basic research field.
一般社団法人日本エネルギー学会の論文
2006-09-20