Catalytic Pt-C Nanomaterial for Gas Diffusion Electrode: Arc-Discharge Synthesis and Improving of Electrical Conductivity Properties

• Published in: Key Engineering Materials Vol. 729; pp. 58 - 62
• Main Authors: Smovzh, Dmitriy V., Novopashin, Sergey A., Sakhapov, Salavat Z., Zaikovskii, Alexey V.
• Format: Journal Article
• Language: English
• Published: Trans Tech Publications Ltd 01.02.2017
• Subjects: Carbon; Electrical conductivity; Electrical resistivity; Electrodes; Gas diffusion; Nanoparticles; Parameters; Synthesis; Arc Discharge; Carbon Matrix; Electrical Conductivity; Platinum; Catalyst; Gas-Diffusion Electrode
• ISBN: 3035710090; 9783035710090
• ISSN: 1013-9826; 1662-9795; 1662-9795
• DOI: 10.4028/www.scientific.net/KEM.729.58

Pt-C material was synthesized by arc-discharge method for application in creation of a gas diffusion electrode for an Al-air battery. The material was burned and mixed with graphite powder to replacement poor conductive carbon matrix, which closes Pt nanoparticles. Gas-diffusion electrodes produced by usage such materials have work characteristics of industrial level. Improving of work characteristic of gas diffusion electrodes is associated with increasing of electrical conductivity of carbon matrix which closes Pt nanoparticles. The arc discharge parameter dependence of structural and conductive properties of pure carbon material was studied, and it’s determined that the main parameter is buffer gas pressure. The carbon materials synthesized at pressure lower than 12 Torr have several times larger conductivity due to disappearance of the amorphous carbon layers and decreasing of contact resistance.