Abstract
Battery performance of a graphite electrode for negative electrodes of lithium-ion batteries was successfully enhanced by pretreatment of graphite powders with lithium, sodium, and potassium chloride aqueous solutions. In the process of the pretreatment, graphite powders were simply dispersed in the aqueous solutions and dried to coat the graphite powder with alkali chloride solid after filtration. When the optimum concentrations of each chloride, LiCl, NaCl, and KCl, were adopted for the pretreatment, the irreversible electroreduction capacity at the initial cycle was reduced by the chloride coating which was capable of modifying the solid electrolyte interphase formed on the graphite electrode surface, furthermore, the reversible capacity at a relatively high rate was improved by the coating from ≊ during successive cycles in a ethylene carbonate:diethyl carbonate electrolyte solution. The origins of the improvement were discussed from surface and electrochemical analyses.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.