A Study of Electrochemical Reduction of Ethylene and PropyleneCarbonate Electrolytes on Graphite Using ATR-FTIR Spectroscopy

Journal Article · Thu May 12 00:00:00 EDT 2005 · Electrochemical and Solid-State Letters

DOI:https://doi.org/10.1149/1.1979327· OSTI ID:861518

Zhuang, Guorong V; Yang, Hui; Blizanac, Berislav; Ross, Jr, Philip N

We present results testing the hypothesis that there is a different reaction pathway for the electrochemical reduction of PC versus EC-based electrolytes at graphite electrodes with LiPF6 as the salt in common. We examined the reduction products formed using ex-situ Fourier Transform Infrared (FTIR) spectroscopy in attenuated total reflection (ATR) geometry. The results show the pathway for reduction of PC leads nearly entirely to lithium carbonate as the solid product (and presumably ethylene gas as the co-product) while EC follows a path producing a mixture of organic and inorganic compounds. Possible explanations for the difference in reaction pathway are discussed.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE. Assistant Secretary for Energy Efficiency andRenewable Energy, Office of the FreedomCAR and Vehicle TechnologyProgram
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 861518
• Report Number(s): LBNL-57462; R&D Project: 673501; BnR: VT0301030; TRN: US200601%%897
• Journal Information: Electrochemical and Solid-State Letters, Vol. 8, Issue 9; Related Information: Journal Publication Date: 2005
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
CARBONIC ACID ESTERS
ELECTRODES
ELECTROLYTES
ETHYLENE
GEOMETRY
GRAPHITE
HYPOTHESIS
INORGANIC COMPOUNDS
LITHIUM CARBONATES
MIXTURES
REFLECTION
SPECTROSCOPY
TESTING
Li-ion battery FTIR spectroscopy Solid electrolyteInterphase