02113nas a2200253   4500008004100000022001400041245015700055210006900212260000800281300001400289490000700303520121100310653001601521653002701537653002301564653001501587653000901602100001801611700002501629700002701654700002201681700002401703856013201727       2023                        eng d  a0366-635200aInvestigation and analysis of structural and electrochemical properties of highly ionic conductive La2-xSrxSn2O7-delta electrolyte for SOFC applications0 aInvestigation and analysis of structural and electrochemical pro  cMAY  a2697-27050 v773 a<p>
	This study primarily focused on the investigation, synthesis and analysis of lanthanum and tin pyrochlores electrolytes for solid oxide fuel cell (SOFC) applications. Ceramic samples with diverse compositions of La2-xSrxSn2O7-delta (x = 0.05, 0.1, 0.15, 0.2, 0.25, and 0.3) were synthesized by using solid-state reaction (SSR) methods. The prepared La2-xSrxSn2O7-delta samples were characterized by using X-ray diffraction, scanning electron microscopy and electrochemical impedance spectroscopy measurements. The results were further interpreted regarding the formation of high oxygen vacancy and structural disorder in the La2-xSrxSn2O7-delta matrix. The doping of lanthanum (La3+) by strontium (Sr2+) had a beneficial and remarkable effect on the structural and electrical properties: the increase in dopant (Sr) concentration decreased the lattice parameters of the crystalline phase and enhanced the creation of oxygen vacancies, which consequently increased the ionic conductivity and decreased the activation energy. Thus, it could be understood that the studied new La2-xSrxSn2O7-delta electrolyte would be one of the potential candidates for intermediate temperature SOFC applications.</p>
10aElectrolyte10aImpedance spectroscopy10aIonic conductivity10aPyrochlore10aSOFC1 aMelit, Fatima1 aBounar, Nedjemeddine1 aShaikh, Shabana, P. S.1 aDeshpande, Manish1 aSteil, Marlu, Cesar  uhttps://library.ncl.res.in/content/investigation-and-analysis-structural-and-electrochemical-properties-highly-ionic-conductive