High Performance Hydrogen Evolution Reaction Catalyst Based on Single‐Walled Carbon Nanotubes Decorated by RuOx Nanoparticles,ChemElectroChem

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High Performance Hydrogen Evolution Reaction Catalyst Based on Single‐Walled Carbon Nanotubes Decorated by RuOx Nanoparticles
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-06-03 , DOI: 10.1002/celc.202000528
Fedor S. Fedorov ₁ , Daniel Settipani ₂ , Marthe Emelie Melandsø Buan ₂ , Jani Sainio ₃ , Farhan S. M. Ali ₂ , Daniil Ilatovskii ₁ , Tanja Kallio ₂ , Albert G. Nasibulin _{1,

2}

Affiliation

We report a cathode material based on plasma‐treated single‐walled carbon nanotubes decorated by RuO_x nanoparticles using atomic layer deposition. We have examined cathode performance towards hydrogen evolution reaction by tailoring material wettability, conductivity yielded by plasma treatment, and the catalyst loading. We discuss that nucleation of particles is facilitated by the appearance of carboxylic and hydroxyl groups triggered by oxygen plasma action. The best performance is associated with samples containing RuO_x particles of 4–5 nm, which show hydrogen evolution onset potential to be about −5 mV (vs . RHE) in 0.5 M H₂SO₄ measured at a current density of −1 mA cm⁻² and Tafel slope of 47.5 mV/dec. The material possesses stable performance at −10 mA cm⁻² with a potential of about −160 mV.

中文翻译：

RuOx纳米粒子修饰的单壁碳纳米管为基础的高性能析氢反应催化剂

我们报告了一种基于等离子体处理的单壁碳纳米管的阴极材料，该碳纳米管由RuO _x纳米粒子使用原子层沉积修饰。我们通过调整材料的润湿性，等离子处理产生的电导率和催化剂的负载量，研究了阴极对氢气释放反应的性能。我们讨论了由氧等离子体作用触发的羧基和羟基的出现促进了颗粒的成核。最佳性能与包含4–5 nm的RuO _x颗粒的样品有关，在0.5 MH ₂ SO _4中，在电流密度为−1 mA cm的情况下，显示出析氢开始电位约为-5 mV（相对于RHE）⁻²Tafel斜率为47.5 mV / dec。该材料在-10 mA cm ^-2下具有稳定的性能，电势约为-160 mV。

更新日期：2020-06-23

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