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In-site hydrogen bubble template method to prepare Ni coated metal meshes as effective bi-functional electrodes for water splitting
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-06-13 , DOI: 10.1039/d2dt00886f Yucheng Dong 1 , Shan Ji 2 , Hui Wang 1 , Vladimir Linkov 3 , Rongfang Wang 1
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-06-13 , DOI: 10.1039/d2dt00886f Yucheng Dong 1 , Shan Ji 2 , Hui Wang 1 , Vladimir Linkov 3 , Rongfang Wang 1
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Metal substrates are frequently used as current collectors and supports for electrochemically active materials, but their effect on the physical and electrochemical performance of electrocatalysts is rarely investigated. In this study, the electrodeposition method was used to coat four different metal meshes with three-dimensional nickel porous structures using hydrogen bubbles as a template. The significant influence of the metal substrates on the morphology of deposited nickel was demonstrated. 3D porous structures formed on nickel, iron, copper, and titanium meshes via the hydrogen bubble template method varied significantly. It was found that differences in the physical adsorption of hydrogen and electrochemical hydrogen evolution on metal substrates are the fundamental reasons behind the diverse morphology of the coatings. Lattice matching of the substrate and the active material also plays an important role during the electrodeposition process. Electrocatalytic performance of the newly prepared materials in water electrolysis was evaluated using the hydrogen and oxygen evolution reactions (HER and OER). The results demonstrate the high electrocatalytic activity of Ni/FeM in the OER and HER, and the good stability of Ni/TiM in HER.
中文翻译：
原位氢气泡模板法制备Ni涂层金属网作为有效的水分解双功能电极
金属基材经常用作集电器和电化学活性材料的载体，但很少研究它们对电催化剂的物理和电化学性能的影响。在本研究中，采用电沉积方法，以氢气泡为模板，在四种不同的金属网格上涂覆了三维镍多孔结构。证明了金属基材对沉积镍形态的显着影响。在镍、铁、铜和钛网格上形成的 3D 多孔结构，通过氢气泡模板法变化很大。研究发现，金属基材上氢的物理吸附和电化学析氢的差异是涂层形态多样的根本原因。基板和活性材料的晶格匹配在电沉积过程中也起着重要作用。使用析氢和析氧反应（HER和OER）评估了新制备的材料在水电解中的电催化性能。结果表明 Ni/FeM 在 OER 和 HER 中具有较高的电催化活性，并且 Ni/TiM 在 HER 中具有良好的稳定性。
更新日期：2022-06-13
中文翻译：
原位氢气泡模板法制备Ni涂层金属网作为有效的水分解双功能电极
金属基材经常用作集电器和电化学活性材料的载体，但很少研究它们对电催化剂的物理和电化学性能的影响。在本研究中，采用电沉积方法，以氢气泡为模板，在四种不同的金属网格上涂覆了三维镍多孔结构。证明了金属基材对沉积镍形态的显着影响。在镍、铁、铜和钛网格上形成的 3D 多孔结构，通过氢气泡模板法变化很大。研究发现，金属基材上氢的物理吸附和电化学析氢的差异是涂层形态多样的根本原因。基板和活性材料的晶格匹配在电沉积过程中也起着重要作用。使用析氢和析氧反应（HER和OER）评估了新制备的材料在水电解中的电催化性能。结果表明 Ni/FeM 在 OER 和 HER 中具有较高的电催化活性，并且 Ni/TiM 在 HER 中具有良好的稳定性。
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