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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Electrochemical synergies of Fe-Ni bimetallic MOF CNTs catalyst for OER in water splitting
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Electrochemical synergies of Fe-Ni bimetallic MOF CNTs catalyst for OER in water splitting

机译：水分分裂户外Fe-Ni双金属MOF CNTS催化剂的电化学协同

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摘要

This work describes electrocatalytic behavior of amiable and economical iron nickel 2-amioterephthalic acid metal organic framework (FeNiNH2BDC MOF) and its 2-6 wt % carbon nanotubes (CNTs) composites for oxygen evolution reaction (OER) in an alkaline media. Systematic structural and morphological analysis of solvothermally fabricated Iron (Fe) and Nickel (Ni) based MOF and their CNTs composites was carried out by Fourier Transform Infrared Spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray powder diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, Brunauer-Emmett-Teller (BET) and energy dispersive X-ray spectroscopy (EDX) techniques. Synergetic effect of bimetallic metal organic framework (MOF) and conductive CNTs support improves the catalytic response of MOF. FeNiNH2BDC-5 wt % CNTs composite demonstrated current density of 10 mA/cm(2) at an over potential (eta) 0.22 V and onset potential of 1.36 V vs RHE, comparable with RuO2 state-of-the-art catalytic material for oxygen evolution reaction in a fuel cell. Furthermore, FeNiNH2BDC-5 wt % CNTs composite tafel slope of 68.50mV/dec and 0.675(-1) turnover frequency (TOF) ascertain it as a promising alternative candidate towards costly Pt, Pd, Ir and Ru based catalysts. (C) 2020 Elsevier B.V. All rights reserved.
机译：本工作描述了在碱性介质中，友好且经济的铁镍2-氨基苯酞酸金属有机骨架（FeniH2BDC MOF）及其2-6 wt%碳纳米管（CNTs）复合材料对析氧反应（OER）的电催化行为。采用傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、X射线粉末衍射（XRD）、X射线光电子能谱（XPS）、拉曼光谱（Raman Spectroscopy）、扫描电子显微镜（SEM）、X射线粉末衍射仪（XRD）、X射线光电子能谱（XPS）和扫描电子显微镜（SEM）对溶剂热法制备的铁（Fe）和镍（Ni）基MOF及其碳纳米管复合材料进行了系统的结构和形态分析，Brunauer-Emmett-Teller（BET）和能量色散X射线光谱（EDX）技术。双金属有机骨架（MOF）和导电碳纳米管载体的协同效应提高了MOF的催化响应。FeniH2BDC-5 wt%碳纳米管复合材料在过电位（eta）为0.22 V，起始电位为1.36 V vs RHE时的电流密度为10 mA/cm（2），与燃料电池中用于析氧反应的RuO2最先进催化材料相当。此外，FeniH2BDC-5 wt%CNTs复合tafel斜率为68.50mV/dec和0.675（-1）转换频率（TOF）确定它是昂贵的铂、钯、铱和钌基催化剂的一个有希望的替代品。（C） 2020爱思唯尔B.V.版权所有。

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