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Vacuum evaporated thin films of mixed cobalt and nickel oxides as electrocatalyst for oxygen evolution and reduction

Tipo de material: TextoTextoSeries ; Electrochimica Acta, 47(10), p.1555-1560, 2002Trabajos contenidos:
  • Rashkova, V
  • Kitova, S
  • Konstantinov, I
  • Vitanov, T
Tema(s): Recursos en línea: Resumen: Mixed cobalt and nickel oxides, obtained by vacuum coevaporation of Co, Ni and TeO2 are investigated as electrocatalysts for oxygen reduction and evolution reaction. Gas-diffusion bifunctional oxygen electrodes (GDE)are prepared by direct deposition of catalyst on gas-supplying membrane. Thus obtained GDE with different atomic ratio RCo/Ni and R(Co+Ni)/Te of the catalyst are electrochemically tested by means of steady-state voltammetry. It is shown that the films exhibit high catalytic activity toward both oxygen reduction and evolution reactions despite very small catalyst loading of about 0.07 mg cm-2
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Mixed cobalt and nickel oxides, obtained by vacuum coevaporation of Co, Ni and TeO2 are investigated as electrocatalysts for oxygen reduction and evolution reaction. Gas-diffusion bifunctional oxygen electrodes (GDE)are prepared by direct deposition of catalyst on gas-supplying membrane. Thus obtained GDE with different atomic ratio RCo/Ni and R(Co+Ni)/Te of the catalyst are electrochemically tested by means of steady-state voltammetry. It is shown that the films exhibit high catalytic activity toward both oxygen reduction and evolution reactions despite very small catalyst loading of about 0.07 mg cm-2

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