Preparation of a PVA/HAP composite polymer membrane for a direct ethanol fuel cell (DEFC) |
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Authors: | Chun-Chen Yang Ying-Jeng Lee Shwu-Jer Chiu Kuo-Tong Lee Wen-Chen Chien Che-Tseng Lin Ching-An Huang |
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Affiliation: | (1) Department of Chemical Engineering, Mingchi University of Technology, Taipei Hsien, 243, Taiwan, R.O.C;(2) Department of Mechanical Engineering, Chang Guang University, Taoyuan, 333, Taiwan, R.O.C |
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Abstract: | A novel PVA/Hydroxyapatite (HAP) composite polymer membrane was prepared by the direct blend process and solution casting
method. The characteristic properties of the PVA/HAP composite polymer membranes were investigated using thermal gravimetric
analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), micro-Raman spectroscopy and the AC impedance
method. An alkaline direct ethanol fuel cell, consisting of an air cathode with MnO2 carbon inks based on Ni-foam, an anode with PtRu black on Ni-foam, and the PVA/HAP composite polymer membrane, was assembled
and investigated. It was found that the alkaline direct ethanol fuel cell comprising of a novel cheap PVA/HAP composite polymer
membrane showed an improved electrochemical performance in ambient temperature and air. As a result, the maximum power density
of the alkaline DEFC, using a PtRu anode based on Ni-foam (10.74 mW cm−2), is higher than that of DEFC using an E-TEK PtRu anode based on carbon (7.56 mW cm−2) in an 8M KOH + 2M C2H5OH solution at ambient temperature and air. These PVA/HAP composite polymer membranes are a potential candidate for alkaline
DEFC applications. |
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Keywords: | PVA/HAP Composite Polymer membrane Direct ethanol fuel cell (DEFC) Alkaline |
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