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Nanostructured metallic FeNi2S4 with reconstruction to generate FeNi-based oxide as a highly-efficient oxygen evolution electrocatalyst
Nano Energy ( IF 16.8 ) Pub Date : 2020-11-18 , DOI: 10.1016/j.nanoen.2020.105619
Jun Jiang , Ying-Jie Zhang , Xiao-Jiao Zhu , Shu Lu , Lu-Lu Long , Jie-Jie Chen

FeNi-based nanomaterials with bimetallic alloying effect deliver a great promise as an efficient electrocatalyst for oxygen evolution reaction (OER). However, the reconstruction to generate in-situ catalytically FeNi-based oxides or hydroxides during OER process and high electrical conductivity demand foster the great pursuit of the rational design of FeNi-based OER electrocatalyst a big challenge. Herein, we design and fabricate a nanostructured metallic FeNi2S4 as a highly efficient OER electrocatalyst. This catalyst exhibits an overpotential of (250 mV) and a Tafel slope (62 mV dec−1), that outperforms the benchmark of commercial RuO2. The experimental results demonstrate that the alloying effect and the superior electrical conductivity, endow it a great electrocatalytic performance. Such a nanostructured metallic OER electrocatalyst shows a great promise in water splitting.



中文翻译:

纳米结构化的金属FeNi 2 S 4,经过重构可生成基于FeNi的氧化物,作为高效的析氧电催化剂

具有双金属合金化作用的基于FeNi的纳米材料作为氧释放反应(OER)的有效电催化剂具有广阔的前景。然而,在OER过程中进行重构以产生原位催化的FeNi基氧化物或氢氧化物以及高电导率需求,极大地推动了对FeNi基OER电催化剂合理设计的巨大挑战。在此,我们设计并制造了纳米结构的金属FeNi 2 S 4作为高效的OER电催化剂。该催化剂表现出(250 mV)的超电势和Tafel斜率(62 mV dec -1),超过了商业RuO 2的基准。实验结果表明,合金化作用和优良的电导率赋予其良好的电催化性能。这种纳米结构的金属OER电催化剂在水分解中显示出巨大的希望。

更新日期:2020-11-22
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