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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 646 pages |
| ISBN: | 978-0-9879917-6-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
Proton Conducting Yttrium-Doped Barium Zirconate
Tetsuya Uda1; Donglin Han2;1KYOTO UNIVERSITY, Kyoto , Japan; 2KYOTO UNIVERSITY, Kyoto, Japan;
Type of Paper: Invite
Id Paper: 379
Topic: 9
Abstract:
Fuel cells can produce electricity from hydrogen, “and” produce hydrogen from electricity using the same devices. Therefore, once a hydrogen network in each town is established in the near future, hydrogen will work as the energy-storing medium. For such a scheme, we believe that fuel cells using high temperature proton-conducting oxide, called in the literature PCFC (Protonic Ceramic Fuel Cell), is the best choice among the reported various fuel cells because (1) it can be operated in an intermediate temperature range of 400 to 600 C, and (2) at steam electrolysis and fuel cell operation, the hydrogen generation (or consuming at fuel cell) electrode and steam feeding (or generation) electrode are different. The former feature may allow to the use of inexpensive catalysts and common structural materials, such as stainless steel. The latter is the advantage over SOFC (solid oxide fuel cell), which uses an oxide ion conductor. We are now investigating on trivalent cation-doped barium zirconate, which is a typical proton-conducting ceramics. We review the electrolyte properties and state of art on the electrode material.