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The synergistic effect of inert oxide and metal fluoride dual coatings on advanced cathode materials for lithium ion battery applications.
- Source :
- Physical Chemistry Chemical Physics (PCCP); 6/21/2016, Vol. 18 Issue 23, p15861-15866, 6p
- Publication Year :
- 2016
-
Abstract
- The effect of Al<subscript>2</subscript>O<subscript>3</subscript>/LiF dual coatings on the electrochemical performance of over-lithiated layered oxide (OLO) has been investigated. A uniform coating of Al<subscript>2</subscript>O<subscript>3</subscript> and LiF is obtained on the surface of the layered pristine material. The OLO with a dual Al<subscript>2</subscript>O<subscript>3</subscript>/LiF coating with a ratio of 1 : 1.5 exhibits excellent electrochemical performance. An initial discharge capacity of 265.66 mA h g<superscript>−1</superscript> is obtained at a C-rate of 0.1C. This capacity is approximately 15 mA h g<superscript>−1</superscript> higher than that of pristine OLO. The capacity retention (92.8% at the 50th cycle) is also comparable to that of pristine OLO (91.4% at the 50th cycle). Coating the cathode with a dual layer comprising Al<subscript>2</subscript>O<subscript>3</subscript> and LiF leads to improved charging and discharging kinetics, and prevents direct contact between the cathode and the electrolyte. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639076
- Volume :
- 18
- Issue :
- 23
- Database :
- Complementary Index
- Journal :
- Physical Chemistry Chemical Physics (PCCP)
- Publication Type :
- Academic Journal
- Accession number :
- 116018419
- Full Text :
- https://doi.org/10.1039/c6cp02007k