Artículos de revistas
Porous Ptfe Separator For High Temperature Water Electrolyzers
Registro en:
Electrochimica Acta. , v. 28, n. 3, p. 265 - 267, 1983.
134686
10.1016/0013-4686(83)85121-4
2-s2.0-0020722137
Autor
Teschke O.
Costa A.C.
Galembeck F.
Institución
Resumen
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) 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. 28 3 265 267 CAPES; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Appley, Crépy, (1978) Improvements in Electrolysis Technology in Alkaline Solution, Proc. 2nd World Hydrogen Energy Conf., pp. 227-240. , Zurich, Switzerland Gruffré, Modica, (1980) Diaframmi e Membrane per L'electtrolisi Dell'Acqua. Hydrogen as an Energy Vector, Proc. Intern. Sem., pp. 305-322. , Commission European Com, Brussels