初园园,邓柏晗,谭小耀

• 1:天津工业大学化学与化工学院

摘要(Abstract)：

为解决铁掺杂镍基催化剂中金属离子调控不足及活性位点暴露不充分等问题，采用简单的硼氢化钠一步还原法，室温下通过调控金属Fe的掺杂量成功制备出超薄Fe_1Ni_4OH纳米片电催化剂用于析氧反应（OER）；对所制催化剂进行XRD、SEM、TEM及XPS等物理表征以研究其结构性能关系，并对其进行电化学表征以研究其OER性能。结果表明：经铁/镍离子比例调控所得的Fe_1Ni_4OH纳米片催化剂具有类似α-Ni(OH)_2的结构，为催化OER反应提供活性位点，且其独特的3D纳米片状结构能够暴露出更多的活性位点进而提高催化性能；Fe_1Ni_4OH纳米片在0.1 mol/L KOH溶液中表现出最佳的OER性能，在电流密度达到10 m A/cm2时的超电位仅为247 mV，具有87 mV/dec的Tafel斜率，在10 000 s计时安培测试中表现出优于IrO_2的稳定性。

关键词(KeyWords)： 离子调控;3D纳米片;电催化剂;铁镍氢氧化物;析氧反应

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目（21206124）

作者(Author): 初园园,邓柏晗,谭小耀

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