Preparation and Characterization of Ruo<sub>2</sub> Catalysts for Oxygen Evolution in a Solid Polymer Electrolyte

J. C. Cruz; V. Baglio; S. Siracusano; V. Antonucci; A. S. Aricò; R. Ornelas; L. Ortiz-Frade; G. Osorio-Monreal; S. M. Durón-Torres; L.G. Arriaga

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Preparation and Characterization of Ruo₂ Catalysts for Oxygen Evolution in a Solid Polymer Electrolyte

机译：固体聚合物电解质中析氧的Ruo _{2 催化剂的制备与表征}

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RuO2 electrocatalysts were synthesized and characterized for the oxygen evolution reaction in a SolidPolymer Electrolyte (SPE) electrolyzer. The catalysts were prepared by a colloidal preparationprocedure and thermal treatment at different temperatures from 200 to 350 C. The materialcharacterization was carried out by XRD, TG-DSC and TEM analyses. The RuO2 catalysts were-2 sprayed onto a Nafion 115 membrane with a loading of 3 mg cm . A Pt catalyst was used at the-2 cathode compartment with a loading of 0.6 mg cm . The electrochemical activity of MEAs wasinvestigated in a single SPE cell and in a conventional three-electrode half-cell by using linearvoltammetry, impedance spectroscopy and chronoamperometry. The maximum current density at highpotential (1.8 V) was obtained for RuO2 calcined at 300C for 1 h. The chronoamperometricmeasurements shown that the most stable catalyst was the RuO2 calcined at 300C for 3 h.

机译：合成了RuO2电催化剂，并在SolidPolymer电解质（SPE）电解槽中对氧气的释放反应进行了表征。通过胶体制备方法和在200至350℃的不同温度下进行热处理来制备催化剂。通过XRD，TG-DSC和TEM分析对材料进行表征。将RuO 2催化剂-2以3mg / cm 2的负荷喷雾到Nafion 115膜上。在-2阴极室使用Pt催化剂，负载量为0.6mg / cm 2。通过使用线性伏安法，阻抗谱法和计时电流法，在单个SPE电池和常规的三电极半电池中研究了MEA的电化学活性。在300℃下煅烧1 h的RuO2在高电位（1.8 V）下获得了最大电流密度。计时电流法测量表明，最稳定的催化剂是RuO2在300℃下煅烧3小时。

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《International Journal of Electrochemical Science》 |2011年第12期|共13页
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J. C. Cruz; V. Baglio; S. Siracusano; V. Antonucci; A. S. Aricò; R. Ornelas; L. Ortiz-Frade; G. Osorio-Monreal; S. M. Durón-Torres; L.G. Arriaga;
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Preparation and Characterization of Ruo2 Catalysts for Oxygen Evolution in a Solid Polymer Electrolyte

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Preparation and Characterization of Ruo₂ Catalysts for Oxygen Evolution in a Solid Polymer Electrolyte