Increased Cycling Performance of Li-Ion Batteries by Phosphoric Acid Modified LiNi0.5Mn1.5O4 Cathodes in the Presence of LiBOB
Maheeka Yapa Abeywardana
Department of Chemistry, University of Rhode Island, Kingston, RI 02881, USA uri.edu
Search for more papers by this authorNina Laszczynski
Department of Chemistry, University of Rhode Island, Kingston, RI 02881, USA uri.edu
Search for more papers by this authorMatthias Kuenzel
Helmholtz Institute Ulm (HIU), 89081 Ulm, Germany
Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany kit.edu
Search for more papers by this authorDominic Bresser
Helmholtz Institute Ulm (HIU), 89081 Ulm, Germany
Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany kit.edu
Search for more papers by this authorStefano Passerini
Helmholtz Institute Ulm (HIU), 89081 Ulm, Germany
Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany kit.edu
Search for more papers by this authorCorresponding Author
Brett Lucht
Department of Chemistry, University of Rhode Island, Kingston, RI 02881, USA uri.edu
Search for more papers by this authorMaheeka Yapa Abeywardana
Department of Chemistry, University of Rhode Island, Kingston, RI 02881, USA uri.edu
Search for more papers by this authorNina Laszczynski
Department of Chemistry, University of Rhode Island, Kingston, RI 02881, USA uri.edu
Search for more papers by this authorMatthias Kuenzel
Helmholtz Institute Ulm (HIU), 89081 Ulm, Germany
Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany kit.edu
Search for more papers by this authorDominic Bresser
Helmholtz Institute Ulm (HIU), 89081 Ulm, Germany
Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany kit.edu
Search for more papers by this authorStefano Passerini
Helmholtz Institute Ulm (HIU), 89081 Ulm, Germany
Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany kit.edu
Search for more papers by this authorCorresponding Author
Brett Lucht
Department of Chemistry, University of Rhode Island, Kingston, RI 02881, USA uri.edu
Search for more papers by this authorAbstract
LiNi0.5Mn1.5O4 (LNMO), which has an operating voltage of 4.8 vs Li/Li+ and a theoretical capacity of 147 mAh g−1, is an interesting cathode material for advanced lithium ion batteries. However, electrolyte decomposition at the electrode can gradually decrease the capacity of the battery. In this study, the surface of the LNMO cathode has been modified with phosphoric acid (PA) to improve the capacity of the LNMO/graphite full cell. Modification of LNMO cathodes by PA is confirmed by surface analysis. Additionally, the presence of lithium bis-(oxalato) borate (LiBOB) as an electrolyte additive further enhances the performance of PA modified LNMO/graphite cells. The improved performance of PA modified cathodes and electrolytes containing LiBOB can be attributed to the suppressed Mn and Ni deposition on the anode. Elemental analysis suggests that the Mn and Ni dissolution is significantly reduced compared to unmodified LNMO/graphite cells with standard electrolyte.
Open Research
Data Availability
All the data used to support the findings of this study are included within the article.
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