title: Direct N(2)H(4)/H(2)O(2) fuel cells powered by nanoporous gold leaves.
abstract: Dealloyed nanoporous gold leaves (NPGLs) are found to exhibit high electrocatalytic properties toward both hydrazine (N(2)H(4)) oxidation and hydrogen peroxide (H(2)O(2)) reduction. This observation allows the implementation of a direct hydrazine-hydrogen peroxide fuel cell (DHHPFC) based on these novel porous membrane catalysts. The effects of fuel and oxidizer flow rate, concentration and cell temperature on the performance of DHHPFC are systematically investigated. With a loading of ~0.1 mg cm(-2) Au on each side, an open circuit voltage (OCV) of 1.2 V is obtained at 80°C with a maximum power density 195 mW cm(-2), which is 22 times higher than that of commercial Pt/C electrocatalyst at the same noble metal loading. NPGLs thus hold great potential as effective and stable electrocatalysts for DHHPFCs.
authors.affiliation: Resources and Ecologic Research Institute, School of Chemistry and Bioscience, Yili Normal University, Xinjiang 835000, China.
authors.forename: Xiuling
authors.initials: X
authors.lastname: Yan
authors.forename: Fanhui
authors.initials: F
authors.lastname: Meng
authors.forename: Yun
authors.initials: Y
authors.lastname: Xie
authors.forename: Jianguo
authors.initials: J
authors.lastname: Liu
authors.forename: Yi
authors.initials: Y
authors.lastname: Ding
mesh_terms: D002384:Catalysis; D055664:Electrochemical Techniques; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D006834:Hydrazines / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D058608:Nanopores; D010084:Oxidation-Reduction
chemical_list: D004573:Electrolytes; D006834:Hydrazines; C029424:hydrazine; D006046:Gold; D006861:Hydrogen Peroxide