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  4. Surface modification of LiNi0.8Co0.15Al0.05O2 particles via Li3PO4 coating to enable aqueous electrode processing
 
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2020
Journal Article
Title

Surface modification of LiNi0.8Co0.15Al0.05O2 particles via Li3PO4 coating to enable aqueous electrode processing

Abstract
The successful implementation of an aqueous-based electrode manufacturing process for nickel-rich cathode active materials is challenging due to their high water sensitivity. In this work, the surface of LiNi0.8Co0.15Al0.05O2 (NCA) was modified with a lithium phosphate coating to investigate its ability to protect the active material during electrode production. The results illustrate that the coating amount is crucial and a compromise has to be made between protection during electrode processing and sufficient electronic conductivity through the particle surface. Cells with water-based electrodes containing NCA with an optimized amount of lithium phosphate had a slightly lower specific discharge capacity than cells with conventional N-methyl-2-pyrrolidone-based electrodes. Nonetheless, the cells with optimized water-based electrodes could compete in terms of cycle life.
Author(s)
Hofmann, Michael  
Fraunhofer-Institut für Silicatforschung ISC  
Nagler, Felix  
Fraunhofer-Institut für Silicatforschung ISC  
Kapuschinski, Martina  
Fraunhofer-Institut für Silicatforschung ISC  
Guntow, Uwe  
Fraunhofer-Institut für Silicatforschung ISC  
Giffin, Guinevere A.
Fraunhofer-Institut für Silicatforschung ISC  
Journal
ChemSusChem. Chemistry & sustainability, energy & materials  
Open Access
DOI
10.1002/cssc.202001907
Language
English
Fraunhofer-Institut für Silicatforschung ISC  
Keyword(s)
  • aqueous electrode processing

  • lithium phosphate coating

  • lithium-ion battery

  • Ni-rich cathode material

  • sustainable chemistry

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