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Stable Hydrogen Evolution from an AgRhO2 Photocathode under Visible Light
Chemistry of Materials ( IF 7.2 ) Pub Date : 2018-03-30 00:00:00 , DOI: 10.1021/acs.chemmater.7b04911 James Eujin Park 1 , Yuan Hu 1 , Jason W. Krizan 1 , Quinn D. Gibson 1 , Uriel T. Tayvah 1 , Annabella Selloni 1 , Robert J. Cava 1 , Andrew B. Bocarsly 1
Chemistry of Materials ( IF 7.2 ) Pub Date : 2018-03-30 00:00:00 , DOI: 10.1021/acs.chemmater.7b04911 James Eujin Park 1 , Yuan Hu 1 , Jason W. Krizan 1 , Quinn D. Gibson 1 , Uriel T. Tayvah 1 , Annabella Selloni 1 , Robert J. Cava 1 , Andrew B. Bocarsly 1
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In the search for improved materials for photoelectrochemical water splitting, it has become important to identify new classes of semiconductor materials that may serve as improved photocathodes. To this end, p-type AgRhO2 has been synthesized and tested as a photocathode for water splitting. The AgRhO2 photocathode is found to exhibit excellent photocatalytic capability for reducing protons to H2 across a wide range of pH values with nearly 100% faradaic efficiency and good photostability. Polycrystalline AgRhO2 electrodes exhibit strong preferred c-axis orientation, resulting in anisotropic conductivity, evident from resistivity measurements. AgRhO2 photocathodes are found to provide improved performance and photostability when compared to prior work using a p-CuRhO2 electrode. Enhanced performance is in part attributed to the unusual degree of c-axis orientation found in this material. In addition, there is a significantly lower kinetic barrier for H2 production at the AgRhO2 interface.
中文翻译：
在可见光下从AgRhO 2光电阴极稳定放出氢气
在寻找用于光电化学水分解的改进材料时，确定可用作改进的光阴极的新型半导体材料已变得很重要。为此，已经合成并测试了p型AgRhO 2作为用于水分解的光阴极。发现AgRhO 2光电阴极具有出色的光催化能力，可以在很宽的pH值范围内将质子还原为H 2，具有接近100％的法拉第效率和良好的光稳定性。多晶AgRhO 2电极表现出很强的c轴方向性，从而产生各向异性的电导率，这从电阻率测量中可以明显看出。AgRhO 2与使用p-CuRhO 2电极的先前工作相比，发现光电阴极可提供改进的性能和光稳定性。性能的提高部分归因于这种材料中c轴取向的异常程度。另外，在AgRhO 2界面处产生H 2的动力学势垒明显更低。
更新日期：2018-03-30
中文翻译：
在可见光下从AgRhO 2光电阴极稳定放出氢气
在寻找用于光电化学水分解的改进材料时，确定可用作改进的光阴极的新型半导体材料已变得很重要。为此，已经合成并测试了p型AgRhO 2作为用于水分解的光阴极。发现AgRhO 2光电阴极具有出色的光催化能力，可以在很宽的pH值范围内将质子还原为H 2，具有接近100％的法拉第效率和良好的光稳定性。多晶AgRhO 2电极表现出很强的c轴方向性，从而产生各向异性的电导率，这从电阻率测量中可以明显看出。AgRhO 2与使用p-CuRhO 2电极的先前工作相比，发现光电阴极可提供改进的性能和光稳定性。性能的提高部分归因于这种材料中c轴取向的异常程度。另外，在AgRhO 2界面处产生H 2的动力学势垒明显更低。
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