Performance of a Double Catalyst Fuel Cell Cathode with a Tubular Oxygen Breathing and Preliminary Reduction Zone  

作　　者：Luís A.Waack BAMBACE Miriam NISHIMORI Fernando M.RAMOS Demétrio BASTOS-NETTO 

机构地区：[1]Instituto Nacional de Pesquisas Espaciais-INPE Av.Dos Astronautas 1758,S■o José dos Campos,SP,Brazil,CEP 12210-970,Instituto Nacional de Pesquisas Espaciais-INPE Av.Dos Astronautas 1758,S■o José dos Campos,SP,Brazil,CEP 12210-970,Instituto Nacional de Pesquisas Espaciais-INPE Av.Dos Astronautas 1758,S■o José dos Campos,SP,Brazil,CEP 12210-970,Instituto National de Pesquisas Espaciais-INPE Rod.Presidente Dutra km 40,Cachoeira Paulista,SP,Brazil CEP12630-000

出　　处：《Journal of Thermal Science》2005年第2期187-192,共6页热科学学报（英文版）

摘　　要：This paper discusses a mathematical model for a liquid phase reacting flow occurring at the cathode of a patent pending novel fuel cell geometry, where a non homogeneous catalysis carried by gold and Prussian Blue, with the first reducing air O2 and the second the resulting H2O2. The breathing zone is porous walls microtubes, with three different types of pores in its walls. Inside the microtubes there is water solution of sulfuric acid. The microtubes possess an external layer of extremely porous polymer hydrophobic agent. A Prussian Blue thin porous layer is over the selective membrane. Appropriate porous and tubular connecting elements close the fluid loop. The asymmetry induces proper current and electric potential profiles, which leads to a mainly electrocapillary electrokinetic flow, which enhances the oxygen transport and assures the H2O2 flow to its reduction layer.

关 键 词：non homogeneous catalysis fuel cell CATHODE electrokinetic convection breathing area. 

分 类 号：TM911.4[电气工程—电力电子与电力传动]