Amazing enhancement of OER performances: creating a well-designed functional Ni and N-doped carbon layer as a support material for fabricating a NiFe-LDH electrocatalyst,Chemical Communications

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Amazing enhancement of OER performances: creating a well-designed functional Ni and N-doped carbon layer as a support material for fabricating a NiFe-LDH electrocatalyst
Chemical Communications ( IF 4.3 ) Pub Date : 2023-09-04 , DOI: 10.1039/d3cc03311b
Yu Wei ₁ , Zhenze Han ₁ , Taolue Liu ₁ , Xin Ding ₂ , Yan Gao ₁

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A well-designed support material between catalyst and substrate can always significantly enhance the performance of an electrode on water oxidation. In this work, a functional Ni and N-doped carbon layer (NNC) was designed on carbon paper (CP) via pyrolysis by using a controlled electrodeposited polyporphyrin as a precursor. Consequently, the fabricated NiFe-LDH/NNC/CP achieved a catalytic current density of 100 mA cm⁻² at a small overpotential of 231 mV with a low Tafel slope of 26.0 mV dec⁻¹, as well as high durability for more than 360 h. The insights are that N-doping reinforces the hydrophilicity and the catalyst binding capacity, while Ni-doping intensifies the conductivity.

中文翻译：

OER 性能的惊人增强：创建精心设计的功能性 Ni 和 N 掺杂碳层作为制造 NiFe-LDH 电催化剂的支撑材料

催化剂和基底之间精心设计的支撑材料总是可以显着提高电极对水氧化的性能。在这项工作中，使用受控电沉积多卟啉作为前体，通过热解在碳纸（CP）上设计了功能性镍和氮掺杂碳层（NNC）。因此，所制造的NiFe-LDH/NNC/CP在231 mV的小过电势下实现了100 mA cm ^-2的催化电流密度，具有26.0 mV dec ^-1的低塔菲尔斜率，以及超过360的高耐久性。 H。研究结果表明，N 掺杂增强了亲水性和催化剂结合能力，而 Ni 掺杂则增强了电导率。

更新日期：2023-09-04

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