The photocapacitor: An efficient self-charging capacitor for direct storage of solar energy

被引:223
作者
Miyasaka, T [1 ]
Murakami, TN [1 ]
机构
[1] Toin Univ Yokohama, Grad Sch Engn, Aoba Ku, Kanagawa 2258502, Japan
关键词
D O I
10.1063/1.1810630
中图分类号
O59 [应用物理学];
学科分类号
摘要
A light-driven self-charging capacitor was fabricated as an efficient solar energy storage device. The device, which we name the photocapacitor, achieves in situ storage of visible light energy as an electrical power at high quantum conversion efficiency. The photocapacitor was constructed on a multilayered photoelectrode comprising dye-sensitized semiconductor nanoparticles/hole-trapping layer/activated carbon particles in contact with an organic electrolyte solution, in which photogenerated charges are stored at the electric double layer. Repeated charge-discharge cycles with a charging voltage of >0.45 V yielded a capacitance of 0.69 F cm(-2). (C) 2004 American Institute of Physics.
引用
收藏
页码:3932 / 3934
页数:3
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