title: Novel phosphamide additive to improve thermal stability of solid electrolyte interphase on graphite anode in lithium-ion batteries.
abstract: In this communication, a novel electrolyte additive, N,N-diallyic-diethyoxyl phosphamide (DADEPA), is described for the first time to improve the thermal stability of lithiated graphite anode in Li-ion batteries. The differential scanning calorimetry (DSC) measurement demonstrated that when the graphite was lithiated in the 5% DADEPA-containing electrolyte, the heat generation decreased sharply by half as compared with the reference, whereas the onset temperature for the main exothermic process was postponed by 20 °C. Electrochemical and XPS analyses indicated that the distinctive improvement in thermal safety came from a new interfacial chemistry, in which phosphorus-containing ingredients was embedded during the initial forming of the interphase.
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, P.R. China.
authors.forename: Xia
authors.initials: X
authors.lastname: Cao
authors.forename: Yixiao
authors.initials: Y
authors.lastname: Li
authors.forename: Xiubin
authors.initials: X
authors.lastname: Li
authors.forename: Jianming
authors.initials: J
authors.lastname: Zheng
authors.forename: Jun
authors.initials: J
authors.lastname: Gao
authors.forename: Yuxing
authors.initials: Y
authors.lastname: Gao
authors.forename: Xiaobiao
authors.initials: X
authors.lastname: Wu
authors.forename: Yufen
authors.initials: Y
authors.lastname: Zhao
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang