Flores-Lasluisa Jhony Xavier, Quílez-Bermejo Javier, Ramírez-Pérez Ana Cristina, Huerta Francisco, Cazorla-Amorós Diego, Morallón Emilia
Departamento de Química Física e Instituto Universitario de Materiales, Universidad de Alicante. Ap. 99, E-03080 Alicante, Spain.
Departamento de Química Inorgánica e Instituto Universitario de Materiales, Universidad de Alicante. Ap. 99, E-03080 Alicante, Spain.
Materials (Basel). 2019 Apr 20;12(8):1302. doi: 10.3390/ma12081302.
The development of electrocatalysts based on the doping of copper over cobalt spinel supported on a microporous activated carbon has been studied. Both copper-cobalt and cobalt spinel nanoparticles were synthesized using a silica-template method. Hybrid materials consisting of an activated carbon (AC), cobalt oxide (CoO), and copper-doped cobalt oxide (CuCoO) nanoparticles, were obtained by dry mixing technique and evaluated as electrocatalysts in alkaline media for hydrogen evolution reaction. Physical mixtures containing 5, 10, and 20 wt.% of CoO or CuCoO with a highly microporous activated carbon were prepared and characterized by XRD, TEM, XPS, physical adsorption of gases, and electrochemical techniques. The electrochemical tests revealed that the electrodes containing copper as the dopant cation result in a lower overpotential and higher current density for the hydrogen evolution reaction.
研究了基于在微孔活性炭负载的钴尖晶石上掺杂铜的电催化剂的开发。采用二氧化硅模板法合成了铜钴和钴尖晶石纳米颗粒。通过干混技术获得了由活性炭（AC）、氧化钴（CoO）和铜掺杂氧化钴（CuCoO）纳米颗粒组成的混合材料，并在碱性介质中作为析氢反应的电催化剂进行了评估。制备了含有5%、10%和20%（重量）CoO或CuCoO与高微孔活性炭的物理混合物，并通过XRD、TEM、XPS、气体物理吸附和电化学技术进行了表征。电化学测试表明，含有铜作为掺杂阳离子的电极在析氢反应中具有较低的过电位和较高的电流密度。
