易于合成的锌掺杂镍铁层状双氢氧化物作为高效析氧催化剂。
Facile formation of Zn-incorporated NiFe layered double hydroxide as highly-efficient oxygen evolution catalyst.
机构信息
Institute of Applied Physics and Materials Engineering, University of Macau, 999078, Macao SAR.
Institute of Applied Physics and Materials Engineering, University of Macau, 999078, Macao SAR.
出版信息
J Colloid Interface Sci. 2023 Oct;647:65-72. doi: 10.1016/j.jcis.2023.05.123. Epub 2023 May 22.
Electrochemical water splitting is the primary method to produce green hydrogen, which is considered an efficient alternative to fossil fuels for achieving carbon neutrality. For meeting the increasing market demand for green hydrogen, high-efficiency, low-cost, and large-scale electrocatalysts are crucial. In this study, we report a simple spontaneous corrosion and cyclic voltammetry (CV) activation method to fabricate Zn-incorporated NiFe layered double hydroxide (LDH) on commercial NiFe foam, which shows excellent oxygen evolution reaction (OER) performance. The electrocatalyst achieves an overpotential of 565 mV and outstanding stability of up to 112 h at 400 mA cm. The active layer for OER is shown to be β-NiFeOOH according to the results of in-situ Raman. Our findings suggest that the NiFe foam treated by simple spontaneous corrosion has promising industrial applications as a highly efficient OER catalyst.
电化学水分解是生产绿色氢气的主要方法，绿色氢气被认为是实现碳中和的化石燃料的有效替代品。为了满足不断增长的绿色氢气市场需求，高效、低成本、大规模的电催化剂至关重要。在这项研究中，我们报告了一种简单的自发腐蚀和循环伏安（CV）激活方法，在商业 NiFe 泡沫上制备了掺锌的 NiFe 层状双氢氧化物（LDH），该方法表现出优异的析氧反应（OER）性能。该电催化剂在 400 mA cm 时的过电势为 565 mV，稳定性出色，长达 112 小时。原位拉曼的结果表明，OER 的活性层是β-NiFeOOH。我们的研究结果表明，经过简单自发腐蚀处理的 NiFe 泡沫作为高效 OER 催化剂具有广阔的工业应用前景。
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