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000189387 1001_ $$0P:(DE-Juel1)157886$$aTavabi, Amir Hossein$$b0$$eCorresponding Author$$ufzj
000189387 245__ $$aIn situ transmission electron microscopy of ionic conductivity and reaction mechanism in ultrathin solid oxide fuel cells
000189387 260__ $$aNew York, NY$$bCambridge University Press$$c2014
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000189387 520__ $$aSolid oxide fuel cells (SOFCs) are promising candidates for use in alternative energy technologies. A full understanding of the reaction mechanisms in these dynamic material systems is required to optimize device performance and overcome present limitations. Here, we show that in situ transmission electron microscopy (TEM) can be used to study redox reactions and ionic conductivity in SOFCs in a gas environment at elevated temperature. We examine model ultrathin half and complete cells in two environmental TEMs using off-axis electron holography and electron energy-loss spectroscopy. Our results from the model cells provide insight into the essential phenomena that are important for the operation of commercial devices. Changes in the activities of dopant cations in the solid electrolyte are detected during oxygen anion conduction, demonstrating the key role of dopants in electrolyte architecture in SOFCs.
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000189387 7001_ $$0P:(DE-HGF)0$$aArai, S.$$b1
000189387 7001_ $$0P:(DE-HGF)0$$aMuto, S.$$b2
000189387 7001_ $$0P:(DE-HGF)0$$aTanji, T.$$b3
000189387 7001_ $$0P:(DE-Juel1)144121$$aDunin-Borkowski, Rafal$$b4
000189387 773__ $$0PERI:(DE-600)1481716-0$$a10.1017/S143192761401349X$$gVol. 20, no. 06, p. 1817 - 1825$$n6$$p1817 - 1825$$tMicroscopy and microanalysis$$v20$$x1435-8115$$y2014
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000189387 9132_ $$0G:(DE-HGF)POF3-143$$1G:(DE-HGF)POF3-140$$2G:(DE-HGF)POF3-100$$aDE-HGF$$bForschungsbereich Energie$$lFuture Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)$$vControlling Configuration-Based Phenomena$$x0
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000189387 9141_ $$y2014
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