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Thin film Catalysts: Ni_5P_4 (Cathodic) and LiCoO_2 (Anodic) for Electrolysis of Water

机译:薄膜催化剂:Ni_5P_4(阴极)和LiCoO_2(阳极),用于电解水

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摘要

Inexpensive earth-abundant catalysts are required to accelerate both the oxidative and reductive half reactions for electrolysis of water. Using natural enzymes as models, such as the CaMn_4O_5 cubane motif in the water oxidizing complex of photosystem II and the Ni-S active site of Ni-Fe hydrogenase, we previously developed cubic LiCoO_2 and nickel phosphides that mimic their chemistry, respectively. Here we prepared thin films of spinel - LiCo_2O_4, for the (water oxidation) oxygen evolving reaction (OER), and Ni_5P_4, for the hydrogen evolving reaction (HER) on Au substrates. We investigated their atomic structure (PXRD), Raman vibrational modes, surface morphology (SEM, AFM), core electronic levels (XPS), and electrochemical catalytic performance. These non-precious metal thin film materials function as well as the individual nanocrystalline particles and are expected to be applicable to use in monolithic photoelectrochemical cells and potentially fuel cells.
机译:需要廉价的富含地球的催化剂来加速用于电解水的氧化和还原半反应。使用天然酶作为模型,例如光系统II的水氧化复合物中的CaMn_4O_5古巴基序和Ni-Fe氢化酶的Ni-S活性位点,我们先前分别开发了模拟其化学性质的立方LiCoO_2和磷化镍。在这里,我们准备了尖晶石薄膜-LiCo_2O_4,用于(水氧化)放氧反应(OER),Ni_5P_4,用于Au基板上的放氢反应(HER)。我们研究了它们的原子结构(PXRD),拉曼振动模式,表面形态(SEM,AFM),核心电子能级(XPS)和电化学催化性能。这些非贵金属薄膜材料具有与单个纳米晶体颗粒一样的功能,并有望适用于整体式光电化学电池和潜在的燃料电池。

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  • 会议地点 San Diego(US)
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    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Physics Astronomy, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA,Department of Physics Astronomy, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Department of Materials Science and Engineering, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Department of Materials Science and Engineering, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA;

    Institute for Advanced Materials, Devices, and Nanotechnology, Rutgers University, New Brunswick, New Jersey 08854, USA,Department of Chemistry Chemical Biology, Rutgers University, New Brunswick, New Jersey, 08854, USA;

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