质子交换膜燃料电池用碳气凝胶载铂催化电极

Catalytic electrode with carbon aerogel supported Pt for proton exchange membrane fuel cell

采用乙二醇还原法,以碳气凝胶为载体制备碳气凝胶载铂催化电极(Pt/CA/CP),并制成燃料电池单电池。采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X线衍射仪(XRD)对碳气凝胶载铂催化剂进行表征,铂颗粒均匀分散于碳气凝胶载体上,粒径集中为3~5 nm。采用循环伏安法(CV)对碳气凝胶载铂催化电极进行电化学性能评价,碳气凝胶载铂催化电极具有较高的催化剂利用率,采用燃料电池测试系统对单电池进行性能评价,碳气凝胶载铂催化电极单电池工作电压可大于0.9 V,电流密度接近1 A/cm^2。

Catalytic electrode with carbon aerogel supported platinum（ Pt / CA / CP） was prepared by ethylene glycol reduction and was used for single cell. The morphologies and physical properties of Pt / CA catalysts were characterized by scanning electron microscopy（ SEM）,transmission electron microscopy（ TEM） and X-ray diffraction（ XRD）. Platinum particles were dispersed on carbon aerogel. Platinum particle size was 3-5 nm. Cyclic voltammetry（ CV） was used to evaluate the electrochemical performance of carbon aerogel catalyst with supported Pt. The catalytic performance of single cell was evaluated by fuel cell test system. The operating voltage of Pt / CA / CP single cell was 0. 9 V and the current density closed to 1 A / cm^2.