Studies on film formation on cathodes using pyrazole derivatives as electrolyte additives in the Li-ion battery |
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| Authors: | Daewoong Kam Ketack Kim Hyun-Soo Kim Hua Kun Liu |
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| Affiliation: | aBattery Research Group, Korea Electrotechnology Research Institute, Changwon 641-600, Republic of Korea;bEnergy Materials Research Program, Institute for Superconducting and Electronic Materials, ARC Centre for Electromaterials Science, University of Wollongong, NSW 2519, Australia |
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| Abstract: | Pyrazole derivatives are flame retardants and provide thermal protection on cathodes, as they help to form a thick protective film. A thicker film provides more protection and delays the thermal decomposition of the cathode. Among the tested pyrazoles, bis(trifluoromethyl)pyrazole (BFTMP) serves as the best flame retardant additive. Additionally, a cell with BFTMP shows better capacity retention than a cell with no additive in full-cell cycle life tests. |
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| Keywords: | Li-ion battery Flame retardant additive Pyrazole Film formation Cathode |
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