Graphite oxide-incorporated CeP2O7/BPO4 solid composite electrolyte for high-temperature proton exchange membrane fuel cells. (1st September 2016)

• Record Type: Journal Article
• Authors: Huang, Xin; Deng, Yuming; Xu, Chenxi; Hu, Yao; Yang, Liang; Luo, Paifeng; Lu, Yingwei; Cheng, Jigui
• Is Part Of: Fuel. Volume 179(2016)
• Page Start: 299
• Page End: 304
• Publication Date: 2016-09-01
• Subjects: High-temperature proton exchange membrane fuel cells -- Graphite oxide -- Inorganic composite membrane -- Boron phosphate; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2016.03.089
• Languages: English
• ISSNs: 0016-2361

Abstract

Graphical abstract: Polarisation and power density curves of a fuel cell operated at 200 °C, 250 °C and 300 °C with 5 vol%H2 /Ar and air at atmospheric pressure. Abstract: Proton conductors capable of operating in a high temperature range (over 200 °C) have received great interest for proton exchange membrane fuel cells (PEMFCs). Here, we report promising candidates for inorganic composite membranes for PEMFCs using solid CeP2 O7 /BPO4 and CeP2 O7 /BPO4 /GO (without a liquid phase) at temperatures between 200 °C and 300 °C. BPO4 is prepared by combining a B3 PO4 solution with an 85% H3 PO4 solution, and it is loaded with CeP2 O7 . Furthermore, graphite oxide (GO) is incorporated with the CeP2 O7 /BPO4 -based composite materials to improve the proton conductivity. The structure and phase stability of the membranes are analysed by X-ray diffraction, Fourier transform infrared (FTIR) and thermos-gravimetric analysis (TGA), and the microstructure morphology is analysed by scanning electron microscopy (SEM). The CeP2 O7 /BPO4 and CeP2 O7 /BPO4 /GO composite electrolytes exhibit the high proton conductivities of 0.12 S cm −1 and 0.14 S cm −1 at 250 °C, respectively. Moreover, the peak power densities of the CeP2 O7 /BPO4 /GO membrane are 149 mW cm −2 at 200 °C, 240 mW cm −2 at 250 °C and 184 mW cm −2 at 300 °C.