Three-Dimensional Dendritic Cu–Co–P Electrode by One-Step Electrodeposition on a Hydrogen Bubble Template for Hydrogen Evolution Reaction,ACS Sustainable Chemistry & Engineering

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Three-Dimensional Dendritic Cu–Co–P Electrode by One-Step Electrodeposition on a Hydrogen Bubble Template for Hydrogen Evolution Reaction
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-05-05 00:00:00 , DOI: 10.1021/acssuschemeng.9b01426
Yoo Sei Park _{1,

2} , Woo-Sung Choi ₁ , Myeong Je Jang _{1,

3} , Jeong Hun Lee _{1,

2} , Seongmin Park _{1,

2} , Hyunsoo Jin ₂ , Min Ho Seo ₄ , Kyu-Hwan Lee _{1,

3} , Yadong Yin ₅ , Yangdo Kim ₂ , Juchan Yang ₁ , Sung Mook Choi ₁

Affiliation

A Cu–Co–P electrocatalyst for hydrogen evolution reaction (HER) was designed with a dendritic and porous foam structure. Fabricated by one-step electrodeposition with binary alloy on a hydrogen bubble template, the porous foam exhibited remarkable HER activity in alkaline conditions. Cu was the dominant element in the core and shell region and acted for 3D structure formation. Cu–Co formed in the shell part and acted as an active region for hydrogen evolution reaction. Also, as the amount of P increased in the Cu–Co–P foams, the pore numbers, the electrochemical surface area (ECSA), and the HER activity were enhanced. The improved activity is believed to originate from the charge separation between the negatively charged P (δ^–) and positively charged Cu and Co (δ⁺), the larger ECSA, and increased porosity.

中文翻译：

一步法在氢气泡模板上进行电沉积的三维树枝状Cu-Co-P电极，用于析氢反应

设计了具有树枝状和多孔泡沫结构的用于氢气析出反应（HER）的Cu-Co-P电催化剂。通过在氢气泡模板上用二元合金进行一步电沉积制备，该多孔泡沫在碱性条件下表现出显着的HER活性。Cu是核和壳区域中的主要元素，并起着3D结构形成的作用。Cu-Co在壳部分形成，并作为氢释放反应的活性区域。另外，随着Cu-Co-P泡沫中P含量的增加，孔数，电化学表面积（ECSA）和HER活性也得到增强。改进的活性被认为是由带负电荷的P（δ之间的电荷分离来发起^-）和带正电荷的铜和钴（δ ⁺），更大的ECSA并增加了孔隙度。

更新日期：2019-05-05

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