H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 8/10 (2006.01) A61N 5/00 (2006.01) C04B 35/486 (2006.01) C04B 35/50 (2006.01) C04B 41/00 (2006.01) H01M 2/00 (2006.01) H01M 2/02 (2006.01) H01M 8/12 (2006.01)
Patent
CA 2487859
Dislocations (63) are fabricated into electrolyte membrane films (1) to increase ion conductivity. Ion and/or electron irradiation causes the growth of vacancy clusters within the thin film and collapsing into Frank dislocation loops (62) that exhibit high ion conductivity. Maximum ion conductivity is accomplished by spatially reorienting the Frank dislocation loops (62) during a following heat-treatment of the membrane. Thereby the dislocation loops (62) form surface-to-surface continuous dislocations along which ions may propagate between membrane surfaces with minimal activation energies. Dislocation densities in the range of 108~ ~ 1014~ cm/cm3~ may be fabricated with conventional irradiation techniques into ceramics such as, for example yttria stabilized zirconia and doped ceria.
Des dislocations sont fabriqu~es dans des films membranaires d'~lectrolyte pour am~liorer la conductivit~ ionique. Une irradiation ionique et/ou ~lectronique provoque la croissance d'agr~gats de lacunes ~ l'int~rieur du film mince et leur ~crasement en boucles de dislocation de Frank pr~sentant une conductivit~ ionique ~lev~e. Une conductivit~ ionique maximale est atteinte par une r~orientation spatiale des boucles de dislocation de Frank lors d'un traitement thermique membranaire subs~quent. Ainsi, les boucles de dislocation forment des dislocations continues surface ~ surface, le long desquelles des ions peuvent se propager entre des surfaces membranaires, avec des ~nergies d'activation minimales. Des densit~s de dislocation comprises entre 10?8´ et 10?14´ cm/cm?3´ peuvent Útre fabriqu~es par des techniques d'irradiation classiques pour obtenir des c~ramiques, notamment, par exemple une zircone stabilis~e ~ l'yttria et de l'oxyde de c~rium dop~.
O'hayre Ryan
Park Yong-Il
Prinz Fritz B.
Saito Yuji
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Honda Giken Kogyo Kabushiki Kaisha
The Board Of Trustees Of The Leland Stanford Junior Unversity
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