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000906588 0247_ $$2doi$$a10.1016/j.jpowsour.2022.231204
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000906588 1001_ $$0P:(DE-HGF)0$$aKröger, Till-Niklas$$b0
000906588 245__ $$aDirect investigation of the interparticle-based state-of-charge distribution of polycrystalline NMC532 in lithium ion batteries by classification-single-particle-ICP-OES
000906588 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2022
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000906588 520__ $$aThe presented case study provides mesoscopic insights into the state-of-charge (SOC) distribution of battery electrodes containing layered transition metal oxides with Li(Ni0.5Mn0.3Co0.2)O2 (NMC532). The application of classification-single-particle inductively coupled plasma optical emission spectroscopy (CL-SP-ICP-OES) enables the rapid screening of the lithium content of individual cathode active material (CAM) particles achieving a statistically viable elucidation of the mesoscale SOC distribution between different particles of the electrode. The results reveal the evolution of a persistent mesoscale SOC heterogeneity of the electrode upon delithiation at slow rates and extensive relaxation times as confirmed by time-of-flight secondary ion mass spectrometry (ToF-SIMS). The implications of local chemical and structural ramifications of the investigated NMC532 for heterogeneous active material utilization are thoroughly discussed. Furthermore, it is found that the evolved SOC heterogeneity of the electrode is strongly dependent on the current density. The correlation to the decreased capacity utilization is further investigated with a straightforward quantification approach revealing a considerable contribution to capacity fading by persistently inactive lithium in the CAM. The results highlight the importance of the analysis of persistent mesoscale SOC heterogeneity as a potential capacity fade mechanism in layered lithium transition metal oxide-based battery electrodes.
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000906588 7001_ $$0P:(DE-HGF)0$$aHarte, Patrick$$b1
000906588 7001_ $$0P:(DE-HGF)0$$aKlein, Sven$$b2
000906588 7001_ $$0P:(DE-Juel1)171310$$aBeuse, Thomas$$b3
000906588 7001_ $$0P:(DE-HGF)0$$aBörner, Markus$$b4
000906588 7001_ $$0P:(DE-Juel1)166130$$aWinter, Martin$$b5$$ufzj
000906588 7001_ $$00000-0003-1508-6073$$aNowak, Sascha$$b6
000906588 7001_ $$00000-0001-8608-4521$$aWiemers-Meyer, Simon$$b7$$eCorresponding author
000906588 773__ $$0PERI:(DE-600)1491915-1$$a10.1016/j.jpowsour.2022.231204$$gVol. 527, p. 231204 -$$p231204 -$$tJournal of power sources$$v527$$x0378-7753$$y2022
000906588 8564_ $$uhttps://juser.fz-juelich.de/record/906588/files/Direct%20Kr%C3%B6ger-JPS2022.pdf$$yPublished on 2022-02-23. Available in OpenAccess from 2024-02-23.
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