Graphite oxide-incorporated SnP2O7 solid composite electrolyte for high-temperature proton exchange membrane fuel cells. (12th January 2017)

• Record Type: Journal Article
• Authors: Huang, Min; Huang, Xin; Deng, Yuming; Fei, Mingming; Xu, Chenxi; Cheng, Jigui
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 2(2017)
• Page Start: 1113
• Page End: 1119
• Publication Date: 2017-01-12
• Subjects: High-temperature proton exchange membrane fuel cells -- Graphite oxide -- Composite electrolyte; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2016.08.086
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Proton conductors operating in a high temperature range (over 200 °C) have attracted much interest. The promising candidates for inorganic composite membranes for proton exchange membrane fuel cells (PEMFCs) using solid SnP2 O7 and SnP2 O7 /GO at temperatures between 150 °C and 250 °C are reported. Graphite oxide (GO) incorporated with SnP2 O7 improves the proton conductivity and reduces the crossover. The structure and phase stability of the membranes are analysed by X-ray diffraction and thermos-gravimetric analysis (TGA), and the microstructure morphology is analysed by scanning electron microscopy (SEM). The SnP2 O7 /GO composite electrolyte exhibits the proton conductivities of 0.0076 cm −1 at 225 °C and a peak power density of 18 mW cm −2 at 220 °C. Highlights: SnP2O7/GO composite membrane exhibited acceptable proton conductivity and fuel cell performance over 200 °C. The graphite oxide as proton conductor filler enhanced the proton conductivity of inorganic electrolyte at high temperature. SnP2O7/GO membrane had lower activation energy than that of SnP2O7 due to the easier proton jumps between sites.