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首页> 外文期刊>Advanced energy materials >Light-Driven BiVO_4–C Fuel Cell with Simultaneous Production of H_2O_2
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Light-Driven BiVO_4–C Fuel Cell with Simultaneous Production of H_2O_2

机译：同时生产H_2O_2的光驱动BiVO_4-C燃料电池

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Photoelectrochemical (PEC) systems have been researched for decades due to their great promise to convert sunlight to fuels. The majority of the research on PEC has been using light to split water to hydrogen and oxygen, and its performance is limited by the need of additional bias. Another research direction on PEC using light, is to decompose organic materials while producing electricity. In this work, the authors report a new type of unassisted PEC system that uses light, water and oxygen to simultaneously produce electricity and hydrogen peroxide (H2O2) on both the photoanode and cathode, which is essentially a light-driven fuel cell with H2O2 as the main product at the two electrodes, meanwhile achieving a maximum power density of 0.194 mW cm(-2), an open circuit voltage of 0.61 V, and a short circuit current density of 1.09 mA cm(-2). The electricity output can be further used as a sign for cell function when accompanied by a detector such as a light-emitting diode (LED) light or a multimeter. This is the first work that shows H2O2 two-side generation with a strict key factors study of the system, with a clear demonstration of electricity output ability using low-cost earth abundant materials on both sides, which represents an exciting new direction for PEC systems.
机译：由于光电化学（PEC）系统将太阳光转化为燃料的巨大前景，已经进行了数十年的研究。关于PEC的大多数研究都使用光将水分解为氢和氧，其性能受到附加偏压的限制。 PEC使用光的另一个研究方向是在发电时分解有机材料。在这项工作中，作者报告了一种新型的无辅助PEC系统，该系统使用光，水和氧气在光电阳极和阴极上同时产生电和过氧化氢（H2O2），这实际上是一种以H2O2作为光驱的燃料电池。主要产品在两个电极上，同时实现最大功率密度为0.194 mW cm（-2），开路电压为0.61 V和短路电流密度为1.09 mA cm（-2）。当与检测器（例如发光二极管（LED）灯或万用表）一起使用时，电力输出还可以用作电池功能的标志。这是第一篇通过严格的系统关键因素研究过的H2O2双向发电系统，并清楚地展示了使用低成本的地球丰富材料在两侧发电的能力，这代表了PEC系统激动人心的新方向。

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