A Dye-Sensitized Photoelectrochemical Tandem Cell for Light Driven Hydrogen Production from Water
A Dye-Sensitized Photoelectrochemical Tandem Cell for Light Driven Hydrogen Production from Water
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DOI：
10.1021/jacs.6b10699
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发表时间：
2016-12-28
影响因子：
15
通讯作者：
Meyer, Thomas J.
中科院分区：
文献类型：
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作者：
Sherman, Benjamin D.;Sheridan, Matthew V.;Meyer, Thomas J.
串联结光电化学水分解装置（其中两个光吸收电极针对太阳光谱的单独部分产生将水转化为氧气和氢气所需的电压）能够实现比单个吸收器系统高得多的可能效率。我们在这里报告的发展，由一个染料敏化光电化学电池（DSPEC）有线串联染料敏化太阳能电池（DSC）的串联系统。DSPEC光阳极结合了三（联吡啶）钌（II）型发色团和分子钌基水氧化催化剂。DSPEC用两种更红吸收的DSC变体进行测试，一种使用具有I-3（-）/F-氧化还原介体溶液的N719染料，另一种使用具有三（联吡啶）钴（[Co（bpy）（3）]（3+/2+））介体的D35染料。由DSPEC和基于D35/[Co（ppy）（3）]（3+/2+）的DSC组成的串联配置给出了最佳的整体性能，并证明了仅用来自模拟太阳照射的能量输入从H2O产生H-2。
Tandem junction photoelectrochemical water splitting devices, whereby two light absorbing electrodes targeting separate portions of the solar spectrum generate the voltage required to convert water to oxygen and hydrogen, enable much higher possible efficiencies than single absorber systems. We report here on the development of a tandem system consisting of a dye-sensitized photoelectrochemical cell (DSPEC) wired in series with a dye-sensitized solar cell (DSC). The DSPEC photoanode incorporates a tris(bipyridine)ruthenium(II)-type chromophore and molecular ruthenium based water oxidation catalyst. The DSPEC was tested with two more-red absorbing DSC variations, one utilizing N719 dye with an I-3(-)/F- redox mediator solution and the other D35 dye with a tris(bipyridine)cobalt ([Co(bpy)(3)](3+/2+)) mediator. The tandem configuration consisting of the DSPEC and D35/[Co(ppy)(3)](3+/2+) based DSC gave the best overall performance and demonstrated the production of H-2 from H2O with the only energy input from simulated solar illumination.