Polysulfone and zirconia composite separators for alkaline water electrolysis

2013, Volume 7, Issue 2

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Frontiers of Chemical Science and Engineering >> 2013, Volume 7, Issue 2 doi: 10.1007/s11705-013-1331-8

Polysulfone and zirconia composite separators for alkaline water electrolysis

1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China; 3. Research and Development Dept, Tianjin Mainland Hydrogen Equipment Co. Ltd., Tianjin 301609, China

Available online: 2013-06-05

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Abstract

The novel composite separators composed of polysulfone and zirconia were prepared by phase inversion precipitation technique. This technique allows pre-evaporation time and extraction temperature to be varied in order to obtain optimal performances of the separators. In order to evaluate practical applicability of those composite separators, a small-scale electrolysis experimental apparatus was used to investigate the changes of cell voltage, gas purity and separator stability. The results revealed a decreased cell voltage compared to the conventional asbestos separators, and the gas purity and separator stability met the requirements for industrial use.

Keywords

phase inversion ; separator ; alkaline water electrolysis ; mechanical and chemical stability

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