Wireless Solar Water Splitting Using Silicon-Based Semiconductors and Earth-Abundant Catalysts
Wireless Solar Water Splitting Using Silicon-Based Semiconductors and Earth-Abundant Catalysts
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DOI：
10.1126/science.1209816
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发表时间：
2011-11-04
期刊：
影响因子：
56.9
通讯作者：
Nocera, Daniel G.
中科院分区：
文献类型：
--
作者：
Reece, Steven Y.;Hamel, Jonathan A.;Nocera, Daniel G.
我们描述了太阳能水分解电池的发展，包括地球丰富的元素，在近中性pH值的条件下，无论有没有连接线。这些电池由三结非晶硅光伏连接到氢和氧释放催化剂组成，催化剂由地球上丰富的金属和钴的合金制成。|硼酸盐催化剂。这里描述的设备进行太阳能驱动的水分解反应，当用1个太阳（每平方厘米100毫瓦）的空气质量1.5模拟阳光照射时，有线配置的效率为4.7%，无线配置的效率为2.5%。燃料形成催化剂与捕光半导体相结合，提供了一条直接将太阳能转化为燃料的途径，该途径捕获了叶子的许多基本功能元素。
We describe the development of solar water-splitting cells comprising earth-abundant elements that operate in near-neutral pH conditions, both with and without connecting wires. The cells consist of a triple junction, amorphous silicon photovoltaic interfaced to hydrogen- and oxygen-evolving catalysts made from an alloy of earth-abundant metals and a cobalt|borate catalyst, respectively. The devices described here carry out the solar-driven water-splitting reaction at efficiencies of 4.7% for a wired configuration and 2.5% for a wireless configuration when illuminated with 1 sun (100 milliwatts per square centimeter) of air mass 1.5 simulated sunlight. Fuel-forming catalysts interfaced with light-harvesting semiconductors afford a pathway to direct solar-to-fuels conversion that captures many of the basic functional elements of a leaf.