Electrochemical Behavior of Butylene Sulfite as Novel Film-forming Electrolyte Additive for Lithium Ion Batteries

Chem. J. Chinese Universities

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Electrochemical Behavior of Butylene Sulfite as Novel Film-forming Electrolyte Additive for Lithium Ion Batteries

LI Li^1,3, WU Feng^1,3, CHEN Ren-Jie^2,3, WU Sheng-Xian¹

1. School of Chemical Engineering & Environment, Beijing Institute of Technology, Beijing 100081, China;
2. Department of Chemistry, Tsinghua University, Beijing 100084, China;
3. National Development Center of High Technology Green Materials, Beijing 100081, China

Received:2006-05-15 Revised:1900-01-01 Online:2007-02-10 Published:2007-02-10
Contact: WU Feng

Abstract

Abstract: As a novel organic solvent electrolyte material, sulfites possess high a antioxidation and electrochemical stability. Butylene sulfite with cyclic structure was synthesized. The total energy and the frontier molecular orbital energy of the organic butylene sulfite and propylene carbonate molecules were calculated. The LUMO energy and the total energy of the propylene carbonate molecule were lower than that of the butylene sulfite molecule. It is clearly indicated that the butylene sulfite molecule can easily accept electrons and bears a high reaction activity. Even in additive amounts(volume fraction 5%) butylene sulfite is suppressing co-intercalation of propylene carbonate(PC) into graphite. The formation of a stable passivating film on the graphite surface was believed to be the reason for the improved cycle performance for lithium ion battery.

Key words: Butylene sulfite, Electrolyte, Graphite electrode, Lithium ion battery, Solid electrolyte interphase film

CLC Number:

O646

TrendMD:

LI Li^1,3, WU Feng^1,3, CHEN Ren-Jie^2,3, WU Sheng-Xian¹. Electrochemical Behavior of Butylene Sulfite as Novel Film-forming Electrolyte Additive for Lithium Ion Batteries[J]. Chem. J. Chinese Universities, doi: .

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Electrochemical Behavior of Butylene Sulfite as Novel Film-forming Electrolyte Additive for Lithium Ion Batteries

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