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Type: Artigo de periódico
Title: Porous Ptfe Separator For High Temperature Water Electrolyzers
Author: Teschke O.
Costa A.C.
Galembeck F.
Abstract: We have developed and tested a PTFE porous diaphragm for high temperature and high pressure alkaline water electrolyzers. The separator was prepared by a film-pressing technique. A mixture of PTFE and iron oxide is molded and heated above 370°C. The oxide is removed by washing with aqueous HCl. Open cell porous mats are thus obtained having a density of 0.6 g cm-3. These diaphragms resist corrosion by 30% aqueous KOH at 160°C and they perform well in alkaline water electrolyzers regarding electrolyte permeability, gas-tightness and impedance. The voltage drop introduced by the membrane is 0.1-0.2 V at 500 mA cm-2. © 1983.
Rights: fechado
Identifier DOI: 10.1016/0013-4686(83)85121-4
Date Issue: 1983
Appears in Collections:Unicamp - Artigos e Outros Documentos

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