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Improved performances of lithium carbonate coated graphite in the piperidinium‐based hybrid electrolyte for lithium‐ion battery
Author(s) -
Gao Kun,
Li ShuDan
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900500
Subject(s) - electrolyte , exfoliation joint , graphite , chemistry , lithium (medication) , chemical engineering , battery (electricity) , electrode , electrochemistry , coating , inorganic chemistry , graphene , organic chemistry , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
The lithium carbonate (Li 2 CO 3 )‐coated carbon microbead composites (LCO/CMB‐T) with the coating amount of 1.07, 2.88, and 7.39% are prepared by the impregnation process (IP). Three LCO/CMB‐T samples are first used in the piperidinium‐based hybrid electrolyte. It is found that the long charge–discharge cycles did not result in the decomposition or exfoliation of Li 2 CO 3 coating. They can effectively prevent graphite electrode from exfoliation and suppress the graphite/electrolyte interfacial reaction. In three tested samples (IP‐1.07%, IP‐2.88% and IP‐7.39% for short), the IP‐2.88% sample showed the best cell performances and the highest capacity retention (82.9%) after 50 cycles. This work gives a new design method for the application of graphite materials in the ionic liquid‐based electrolyte.