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A facile method for preparing amorphous Co-Ni-Cu ternary hydroxides as an efficient oxygen evolution reaction electrocatalyst
Materials Letters ( IF 3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.matlet.2020.127307
Hongying Li , Xueliang Wang , Tao Wang , Mingcheng Zhao

Abstract High-efficient, low cost and stable electrocatalysts for oxygen evolution reaction (OER) in alkaline solution are very significant for mass production of clean hydrogen fuels. Herein, an amorphous ternary Co-Ni-Cu lamellar hydroxide was synthesized using a facile co-precipitation method. When the molar ratio of Co:Ni:Cu is 8:3:5, the as-prepared hydroxides displayed remarkable activities towards OER in 0.1 M KOH with a low overpotential (337 mV), small Tafel slope (78 mV dec−1) and outstanding stability. These properties are much better than those with different molar ratio. The facile preparation method and excellent electrocatalytic properties endowed this material as a potential candidate for precious metal catalysts for OER.

中文翻译:

一种制备无定形 Co-Ni-Cu 三元氢氧化物作为高效析氧反应电催化剂的简便方法

摘要 高效、低成本、稳定的碱性溶液析氧反应(OER)电催化剂对于大规模生产清洁氢燃料具有重要意义。在此,使用简便的共沉淀法合成了无定形三元 Co-Ni-Cu 层状氢氧化物。当 Co:Ni:Cu 的摩尔比为 8:3:5 时,所制备的氢氧化物在 0.1 M KOH 中表现出显着的 OER 活性,具有低过电位 (337 mV)、小塔菲尔斜率 (78 mV dec-1)和出色的稳定性。这些性质比具有不同摩尔比的性质要好得多。简便的制备方法和优异的电催化性能使该材料成为 OER 贵金属催化剂的潜在候选者。
更新日期:2020-04-01
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