Studies of oxygen transport mechanism in electrolytes based on doped lanthanum silicate with apatite structure using techniques of oxygen isotopic heteroexchange and impedance spectroscopy

Sadykov, VA; Kharlamova, TS; Mezentseva, NV; Pavlova, SN; Sadovskaya, EM; Muzykantov, VS; Bespalko, YuN; Usol'Tsev, VV; Zevak, EG; Kriger, TA; Ishchenko, AV; Uvarov, NF; Ulikhin, AS; Chaikina, MV; Argirusis, C

dc.contributor.author	Sadykov, VA	en
dc.contributor.author	Kharlamova, TS	en
dc.contributor.author	Mezentseva, NV	en
dc.contributor.author	Pavlova, SN	en
dc.contributor.author	Sadovskaya, EM	en
dc.contributor.author	Muzykantov, VS	en
dc.contributor.author	Bespalko, YuN	en
dc.contributor.author	Usol'Tsev, VV	en
dc.contributor.author	Zevak, EG	en
dc.contributor.author	Kriger, TA	en
dc.contributor.author	Ishchenko, AV	en
dc.contributor.author	Uvarov, NF	en
dc.contributor.author	Ulikhin, AS	en
dc.contributor.author	Chaikina, MV	en
dc.contributor.author	Argirusis, C	en
dc.date.accessioned	2014-03-01T02:47:28Z
dc.date.available	2014-03-01T02:47:28Z
dc.date.issued	2011	en
dc.identifier.issn	1023-1935	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33169
dc.subject	doped lanthanum silicate with an apatite structure	en
dc.subject	impedance spectroscopy	en
dc.subject	isotopic oxygen heteroexchange	en
dc.subject	mechanism	en
dc.subject	oxygen conductivity	en
dc.subject	solid electrolytes	en
dc.subject.classification	Electrochemistry	en
dc.subject.other	Apatite structures	en
dc.subject.other	Co-doped	en
dc.subject.other	Doped lanthanum silicate	en
dc.subject.other	impedance spectroscopy	en
dc.subject.other	Isotopic oxygen	en
dc.subject.other	Lanthanum silicates	en
dc.subject.other	Lower energies	en
dc.subject.other	Migration process	en
dc.subject.other	Optimum composition	en
dc.subject.other	Oxygen atom	en
dc.subject.other	Oxygen diffusion	en
dc.subject.other	Oxygen isotopic	en
dc.subject.other	Oxygen mobility	en
dc.subject.other	Oxygen transport	en
dc.subject.other	Activation energy	en
dc.subject.other	Apatite	en
dc.subject.other	Doping (additives)	en
dc.subject.other	Gadolinium	en
dc.subject.other	Isotopes	en
dc.subject.other	Lanthanum	en
dc.subject.other	Lanthanum alloys	en
dc.subject.other	Silicates	en
dc.subject.other	Solid electrolytes	en
dc.subject.other	Oxygen	en
dc.title	Studies of oxygen transport mechanism in electrolytes based on doped lanthanum silicate with apatite structure using techniques of oxygen isotopic heteroexchange and impedance spectroscopy	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1134/S1023193511040136	en
heal.identifier.secondary	http://dx.doi.org/10.1134/S1023193511040136	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The work presents the results of studying the mechanism of oxygen transport for a new promising class of oxygen-containing electrolytes based on lanthanum silicate with an apatite structure using impedance spectroscopy and isotopic oxygen heteroexchange. At 1000 K, in the case of samples with an optimum composition including codoped Fe and Al, sigma similar to 3 x 10(-3) to 10(-2) S/cm and D* reaches similar to 10(-8) cm(2)/s, which is close to the values of YSZ and Ce0.9Gd0.1O2-(delta) (GDC). Lower energies of conductivity activation and oxygen diffusion for doped apatites (similar to 0.5-0.8 eV instead of similar to 1 eV for GDC) and also equivalence as regards exchange of all oxygen atoms within apatite agree with the model, in which oxygen mobility is determined by a nonlinear cooperative migration process of oxygen atoms with fast exchange between interstitial and regular sites.	en
heal.publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER	en
heal.journalName	Russian Journal of Electrochemistry	en
dc.identifier.doi	10.1134/S1023193511040136	en
dc.identifier.isi	ISI:000292270800009	en
dc.identifier.volume	47	en
dc.identifier.issue	4	en
dc.identifier.spage	427	en
dc.identifier.epage	441	en