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Surface Modification of LiNi0.8 Co0.15 Al0.05 O2 Particles via Li3 PO4 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 LiNi0.8 Co0.15 Al0.05 O2 (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.

SUBMITTER: Hofmann M 

PROVIDER: S-EPMC7756629 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Surface Modification of LiNi<sub>0.8</sub> Co<sub>0.15</sub> Al<sub>0.05</sub> O<sub>2</sub> Particles via Li<sub>3</sub> PO<sub>4</sub> Coating to Enable Aqueous Electrode Processing.

Hofmann Michael M   Nagler Felix F   Kapuschinski Martina M   Guntow Uwe U   Giffin Guinevere A GA  

ChemSusChem 20201007 22

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 LiNi<sub>0.8</sub> Co<sub>0.15</sub> Al<sub>0.05</sub> O<sub>2</sub> (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 mad  ...[more]

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