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Vibrationally-resol...
Vibrationally-resolved RIXS reveals OH-group formation in oxygen redox active Li-ion battery cathodes
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- Hirsbrunner, Moritz (author)
- Uppsala universitet,Energimaterialens fysik
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- Mikheenkova, Anastasiia (author)
- Uppsala universitet,Strukturkemi
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- Törnblom, Pontus (author)
- Uppsala universitet,Energimaterialens fysik
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- House, Robert A. (author)
- Department of Materials, University of Oxford, UK
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- Zhang, Wenliang (author)
- Swiss Light Source, Photon Science Division, Paul Scherrer Institut, Villigen PSI, Switzerland
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- Asmara, Teguh C. (author)
- Swiss Light Source, Photon Science Division, Paul Scherrer Institut, Villigen PSI, Switzerland
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- Wei, Yuan (author)
- Swiss Light Source, Photon Science Division, Paul Scherrer Institut, Villigen PSI, Switzerland
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- Schmitt, Thorsten (author)
- Swiss Light Source, Photon Science Division, Paul Scherrer Institut
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- Rensmo, Håkan (author)
- Uppsala universitet,Energimaterialens fysik
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- Mukherjee, Soham (author)
- Uppsala universitet,Energimaterialens fysik
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- Hahlin, Maria (author)
- Uppsala universitet,Strukturkemi,Energimaterialens fysik
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- Duda, Laurent C. (author)
- Uppsala universitet,Energimaterialens fysik
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(creator_code:org_t)
- Royal Society of Chemistry, 2024
- 2024
- English.
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In: Physical Chemistry, Chemical Physics - PCCP. - : Royal Society of Chemistry. - 1463-9076 .- 1463-9084. ; 26:28, s. 19460-19468
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Abstract
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- Vibrationally-resolved resonant inelastic X-ray scattering (VR-RIXS) at the O K-edge is emerging as a powerful tool for identifying embedded molecules in lithium-ion battery cathodes. Here, we investigate two known oxygen redox-active cathode materials: the commercial LixNi0.90Co0.05Al0.05O2 (NCA) used in electric vehicles and the high-capacity cathode material Li1.2Ni0.13Co0.13Mn0.54O2 (LRNMC) for next-generation Li-ion batteries. We report the detection of a novel vibrational RIXS signature for Li-ion battery cathodes appearing in the O K pre-peak above 533 eV that we attribute to OH-groups. We discuss likely locations and pathways for OH-group formation and accumulation throughout the active cathode material. Initial-cycle behaviour for LRNMC shows that OH-signal strength correlates with the cathodes state of charge, though reversibility is incomplete. The OH-group RIXS signal strength in long-term cycled NCA is retained. Thus, VR-RIXS offers a path for gaining new insights to oxygen reactions in battery materials.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Hirsbrunner, Mor ...
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Mikheenkova, Ana ...
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Törnblom, Pontus
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House, Robert A.
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Zhang, Wenliang
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Asmara, Teguh C.
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show more...
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Wei, Yuan
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Schmitt, Thorste ...
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Rensmo, Håkan
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Mukherjee, Soham
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Hahlin, Maria
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Duda, Laurent C.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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Physical Chemist ...
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Uppsala University