title: 3,3'-(Ethylenedioxy)dipropiononitrile as an Electrolyte Additive for 4.5 V LiNi1/3Co1/3Mn1/3O2/Graphite Cells.
abstract: 3,3'-(Ethylenedioxy)dipropiononitrile (EDPN) has been introduced as a novel electrolyte additive to improve the oxidation stability of the conventional carbonate-based electrolyte for LiNi1/3Co1/3Mn1/3O2/graphite pouch batteries cycled under high voltage. Mixing 0.5 wt % EDPN into the electrolyte greatly improved the capacity retention, from 32.5% to 83.9%, of cells cycled for 100 times in the range 3.0-4.5 V with a rate of 1C. The high rate performance (3C and 5C) was also improved, while the cycle performance was similar to that of the cell without EDPN when cycled between 3.0 and 4.2 V. Further evidence of a stable protective interphase film can be formed on the LiNi1/3Co1/3Mn1/3O2electrode surface due to the presence of EDPN in the electrolyte. This process effectively suppresses the oxidative decomposition of electrolyte and the growth in the charge-transfer resistance of the LiNi1/3Co1/3Mn1/3O2electrode and greatly improves the high-voltage electrochemical properties for the cells. In contrast, EDPN has no positive effect on the cyclic performance of the LiNi0.5Co0.2Mn0.3O2-based cell under high operating voltage.
authors.affiliation: School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology , Guangzhou, 510641, People's Republic of China.|China-Australia Joint Laboratory for Energy & Environmental Materials, Guangzhou, 510641, People's Republic of China.
authors.forename: Chengyun
authors.initials: C
authors.lastname: Wang
authors.affiliation: Guangzhou Tinci Materials Technology Co. Ltd., Guangzhou, 510760, People's Republic of China.
authors.forename: Le
authors.initials: L
authors.lastname: Yu
authors.affiliation: Guangzhou Tinci Materials Technology Co. Ltd., Guangzhou, 510760, People's Republic of China.
authors.forename: Weizhen
authors.initials: W
authors.lastname: Fan
authors.affiliation: School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology , Guangzhou, 510641, People's Republic of China.|China-Australia Joint Laboratory for Energy & Environmental Materials, Guangzhou, 510641, People's Republic of China.
authors.forename: Jiangwen
authors.initials: J
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology , Guangzhou, 510641, People's Republic of China.|China-Australia Joint Laboratory for Energy & Environmental Materials, Guangzhou, 510641, People's Republic of China.|Key Laboratory of Fuel Cell Technology of Guangdong Province , Guangzhou, 510641, People's Republic of China.
authors.forename: Liuzhang
authors.identifier: http://orcid.org/0000-0003-2392-2801
authors.initials: L
authors.lastname: Ouyang
authors.affiliation: School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology , Guangzhou, 510641, People's Republic of China.|China-Australia Joint Laboratory for Energy & Environmental Materials, Guangzhou, 510641, People's Republic of China.
authors.forename: Lichun
authors.initials: L
authors.lastname: Yang
authors.affiliation: School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology , Guangzhou, 510641, People's Republic of China.|China-Australia Joint Laboratory for Energy & Environmental Materials, Guangzhou, 510641, People's Republic of China.
authors.forename: Min
authors.identifier: http://orcid.org/0000-0001-5018-2525
authors.initials: M
authors.lastname: Zhu
keywords: 3,3′-(ethylenedioxy)dipropiononitrile; LiNi1/3Co1/3Mn1/3O2/graphite; cathode surface passivation; electrolyte additive; high voltage