Structural and Transportation Properties of Strontium Titanate Composites with Ion Conductive Oxides

Bochentyn, B

doi:10.12736/issn.2300-3022.2016202

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Tytuł artykułu

Structural and Transportation Properties of Strontium Titanate Composites with Ion Conductive Oxides

Autorzy

Bochentyn B

Treść / Zawartość

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7c202ff7_Bochentyn_Structural_and_Trans.pdf

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DOI

10.12736/issn.2300-3022.2016202

Warianty tytułu

Właściwości strukturalne i transportowe kompozytów tytanianu strontu z tlenkami przewodzącymi jonowo

Języki publikacji

EN PL

Abstrakty

This paper has been written based on the author’s doctoral dissertation “Structural and transportation properties of strontium and titanate composites with ion conductive oxides”, prepared under the supervision of Prof. Dr. Hab. Eng. Bogusław Kusz at the Department of Solid State Physics of Gdańsk University of Technology. It reports the idea of the thesis and conclusions from the study. Niobium doped strontium titanate (Sr(Ti,Nb)O3) composites with selected ion conductive oxides (yttrium oxide-stabilized zirconium oxide YSZ and cerium oxide CeO2) were developed for the dissertation and their properties examined.. It was shown that Sr(Ti,Nb)O3-YSZ composite as the anode in an oxide fuel cell leads to its improved performance compared to a cell with a singlephase Sr(Ti,Nb)O3 anode. Microscopic observation confirmed that Sr(Ti,Nb)O3-YSZ composite as the functional layer between a Sr(Ti,Nb)O3 anode and YSZ electrolyte mitigates the problem of the composite anode’s delamination from the electrolyte surface. It was also shown that an appropriate modification of the Sr(Ti,Nb)O3-YSZ composite anode surface structure by infusing the process of hydrogen’s electrochemical oxidation with a catalyst (e.g. with nickel) can lead to further improvement of the fuel cell performance.

Artykuł napisano na podstawie rozprawy doktorskiej autorki pt. „Właściwości strukturalne i transportowe kompozytów tytanianu strontu z tlenkami przewodzącymi jonowo”, przygotowaną pod nadzorem prof. dr. hab. inż. Bogusława Kusza w Katedrze Fizyki Ciała Stałego Politechniki Gdańskiej. Prezentuje on ideę pracy doktorskiej oraz wnioski wynikające z przeprowadzonych badań. W pracy doktorskiej wytworzono i zbadano właściwości kompozytów tytanianu strontu domieszkowanego niobem (Sr(Ti,Nb)O3) z wybranymi tlenkami przewodzącymi jonowo (tlenek cyrkonu stabilizowany tlenkiem itru – YSZ, tlenek ceru – CeO2). Wykazano, że zastosowanie kompozytu Sr(Ti,Nb)O3-YSZ jako anody prowadzi do poprawy parametrów pracy tlenkowego ogniwa paliwowego w stosunku do ogniwa z anodą 1-fazową Sr(Ti,Nb)O3. Obserwacje mikroskopowe potwierdziły, że zastosowanie kompozytu Sr(Ti,Nb)O3-YSZ jako warstwy funkcjonalnej między anodą Sr(Ti,Nb)O3 i elektrolitem YSZ ogranicza problem delaminacji anody kompozytowej z powierzchni elektrolitu. Wykazano również, że odpowiednia modyfikacja struktury powierzchniowej anody kompozytowej Sr(Ti,Nb)O3-YSZ poprzez nasączanie katalizatorami procesu elektrochemicznego utleniania wodoru (np. niklem) może prowadzić do dalszej poprawy parametrów pracy ogniwa paliwowego.

Słowa kluczowe

solid oxide fuel cell anode functional layer

tlenkowe ogniwa paliwowe anoda warstwa funkcjonalna

Wydawca

ENERGA SA

Czasopismo

Acta Energetica

Rocznik

2016

Tom

nr 2

Strony

20--27

Opis fizyczny

Bibliogr. 42 po., rys.

Twórcy

autor

Bochentyn B

bbochentyn@mif.pg.gda.pl

Gdańsk University of Technology

Bibliografia

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Bibliografia

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