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Vol. 27 No. 4 (2015): Vol 27 Issue 4

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Application of Novel Hybrid Membranes in Alkaline Direct Methanol Fuel Cells

https://doi.org/10.14233/ajchem.2015.17689
Rui Dong
School of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224051, Jiangsu Province, P.R. China
Jianxun Zhang
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu Province, P.R. China
Bingqian Zhou
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu Province, P.R. China
Peng Fu
School of Faculty of Science, Nanjing University of Technology, Nanjing 211816, Jiangsu Province, P.R. China

Corresponding Author(s) : Rui Dong

dongr@ycit.cn

Asian Journal of Chemistry, Vol. 27 No. 4 (2015): Vol 27 Issue 4

Abstract

A new hybrid anion-exchange membrane with a stable size and dense microstructure was developed. This membrane comprised with quaternized poly(vinyl alcohol) (QPVA), poly(dimethyl diallyl ammonium chloride) (PDADMAC) and tetraethyl orthosilicate (TEOS). The evaluated properties results indicated that the performance of QPVA/0.25PDADMAC/0.1TEOS had many advantages over those of Nafion-series membranes. For example, its methanol content was 37.3 %, which was lower than that of Nafion-115 (41.8 %) at room temperature. The ion-exchange capacity and methanol permeability of the membrane were 1.09 mmol/g and 2.8 × 10-6 cm2/s, respectively, which were distinct from that of Nafion-117 whose values were 0.91 mmol/g and (4.5-9.2) × 10-6 cm2/s, respectively. Furthermore, the ion conductivity of the membrane reached 5.28 × 10-3 S/cm, whereas the heat stability within 65-140 °C was excellent. All these results illustrated that this new hybrid membrane may have potential applications in alkaline direct methanol fuel cells at low temperatures.

Keywords

Quaternized poly(vinyl alcohol) Poly dimethyl diallyl ammonium chloride Tetraethyl orthosilicate
Dong, R., Zhang, J., Zhou, B., & Fu, P. (2015). Application of Novel Hybrid Membranes in Alkaline Direct Methanol Fuel Cells. Asian Journal of Chemistry, 27(4), 1316–1322. https://doi.org/10.14233/ajchem.2015.17689
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