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000857918 1001_ $$00000-0002-8955-2922$$aGuhl, Conrad$$b0$$eCorresponding author
000857918 245__ $$aIn-operando photoelectron spectroscopy for batteries: Set-up using pristine thin film cathode and first results on Na x CoO 2
000857918 260__ $$a[S.l.]$$bAmerican Institute of Physics$$c2018
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000857918 520__ $$aA model all-solid-state battery cell with a thin film NaxCoO2 cathode was assembled under ultra-high vacuum conditions and cycled inside the vacuum chamber, using a dedicated sample holder. We present in-operando x-ray photoelectron spectroscopy measurements of a NaxCoO2 cathode at different charging states. During battery operation, the change in sodium content, the change in cobalt oxidation state, and the evolution of the O1s and VB emissions could be monitored. Comparison with a conventional post-mortem analysis technique showed that the new measurement technique produces comparable results regarding the oxidation state of the transition metal, but sodium and oxygen results show differences due to cathode/electrolyte interfacial reactions for conventional analysis. By using surface layer-free samples in the presented techniques, we could circumvent such reactions and obtain reliable spectra for the pure bulk-like active cathode material.
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000857918 7001_ $$0P:(DE-HGF)0$$aKehne, Philipp$$b1
000857918 7001_ $$0P:(DE-Juel1)129628$$aMa, Qianli$$b2$$ufzj
000857918 7001_ $$0P:(DE-Juel1)129667$$aTietz, Frank$$b3
000857918 7001_ $$0P:(DE-HGF)0$$aAlff, Lambert$$b4
000857918 7001_ $$0P:(DE-HGF)0$$aKomissinskiy, Philipp$$b5
000857918 7001_ $$0P:(DE-HGF)0$$aJaegermann, Wolfram$$b6
000857918 7001_ $$0P:(DE-HGF)0$$aHausbrand, René$$b7
000857918 773__ $$0PERI:(DE-600)1472905-2$$a10.1063/1.5022616$$gVol. 89, no. 7, p. 073104 -$$n7$$p073104$$tReview of scientific instruments$$v89$$x1089-7623$$y2018
000857918 8564_ $$uhttps://juser.fz-juelich.de/record/857918/files/1.5022616.pdf$$yPublished on 2018-07-10. Available in OpenAccess from 2019-07-10.
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