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首页> 外文期刊>Applied Surface Science >Direct electrodeposition of platinum nanoparticles@graphene oxide@ nickel-copper@nickel foam electrode as a durable and cost-effective catalyst with remarkable performance for electrochemical hydrogen evolution reaction
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Direct electrodeposition of platinum nanoparticles@graphene oxide@ nickel-copper@nickel foam electrode as a durable and cost-effective catalyst with remarkable performance for electrochemical hydrogen evolution reaction

机译：铂纳米粒子@氧化石墨烯@镍-铜@镍泡沫泡沫电极的直接电沉积是一种耐用且具有成本效益的催化剂，具有出色的电化学制氢反应性能

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摘要

Development of high-performance catalyst materials with superior activity is among the high challenges in hydrogen production. In this study, the platinum nanoparticles@graphene oxide@nickel-copper@nickel foam (Pt@GO@Ni-Cu@NF) electrode was fabricated using the electrodeposition method. The synthesized electrode demonstrated a high electrocatalytic activity and superior stability in alkaline solution. The required over-potentials for delivering 10, 20, and 100 mA cm(-2) were 31, 50, and 128 mV vs. RHE, respectively. The hydrogen evolution reaction (HER) mechanism, affording to the Tafel slope (51 mV dec(-1)), was Volmer-Heyrovsky mechanism. The electrode was stable at 100 mA cm(-2) after 50 h. The high stability and electrocatalytic activity for HER of the Pt@GO@Ni-Cu@NF electrode were assigned to the dendrite Ni-Cu structure and the high electrochemical surface area of the GO nanolayers (2600), as well as its hydrophilic properties, intrinsic properties of the Pt nanoparticles with a dimension of 20-40 nm, and lower H-2 bubble size. Because of the excellent electrocatalytic activity and stability, this study introduces an effective electrode material for the large-scale hydrogen production industry.
机译：具有优异活性的高性能催化剂材料的开发是制氢的一大挑战。在这项研究中，使用电沉积方法制备了铂纳米粒子@氧化石墨烯@镍-铜@泡沫镍（Pt @ GO @ Ni-Cu @ NF）电极。合成的电极在碱性溶液中显示出高的电催化活性和优异的稳定性。与RHE相比，提供10、20和100 mA cm（-2）所需的过电位分别为31、50和128 mV。提供给Tafel斜率（51 mV dec（-1））的析氢反应（HER）机理是Volmer-Heyrovsky机理。 50小时后，电极在100 mA cm（-2）处稳定。 Pt @ GO @ Ni-Cu @ NF电极的HER的高稳定性和对HER的电催化活性归因于枝晶Ni-Cu结构和GO纳米层（2600）的高电化学表面积，以及其亲水性， Pt纳米粒子的固有特性，尺寸为20-40 nm，并且H-2气泡尺寸较小。由于出色的电催化活性和稳定性，本研究为大规模制氢工业引入了一种有效的电极材料。

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