Show simple item record

dc.contributor.authorShi, Feifei
dc.contributor.authorRoss, Philip N.
dc.contributor.authorZhao, Hui
dc.contributor.authorLiu, Gao
dc.contributor.authorSomorjai, Gabor A.
dc.contributor.authorKomvopoulos, Kyriakos
dc.date.accessioned2016-02-25T12:28:23Z
dc.date.available2016-02-25T12:28:23Z
dc.date.issued2015-02-25
dc.identifier.citationShi F, Ross PN, Zhao H, Liu G, Somorjai GA, et al. (2015) A Catalytic Path for Electrolyte Reduction in Lithium-Ion Cells Revealed by in Situ Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy . Journal of the American Chemical Society 137: 3181–3184. Available: http://dx.doi.org/10.1021/ja5128456.
dc.identifier.issn0002-7863
dc.identifier.issn1520-5126
dc.identifier.pmid25689135
dc.identifier.doi10.1021/ja5128456
dc.identifier.urihttp://hdl.handle.net/10754/597226
dc.description.abstract© 2015 American Chemical Society. Although controlling the interfacial chemistry of electrodes in Li-ion batteries (LIBs) is crucial for maintaining the reversibility, electrolyte decomposition has not been fully understood. In this study, electrolyte decomposition on model electrode surfaces (Au and Sn) was investigated by in situ attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy. Simultaneously obtained ATR-FTIR spectra and cyclic voltammetry measurements show that lithium ethylene dicarbonate and lithium propionate form on the Au electrode at 0.6 V, whereas diethyl 2,5-dioxahexane dicarboxylate and lithium propionate form on the Sn electrode surface at 1.25 V. A noncatalytic reduction path on the Au surface and a catalytic reduction path on the Sn surface are introduced to explain the surface dependence of the overpotential and product selectivity. This represents a new concept for explaining electrolyte reactions on the anode of LIBs. The present investigation shows that catalysis plays a dominant role in the electrolyte decomposition process and has important implications in electrode surface modification and electrolyte recipe selection, which are critical factors for enhancing the efficiency, durability, and reliability of LIBs.
dc.description.sponsorshipThis work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Freedom CAR and Vehicle Technologies of the U.S. Department of Energy under Contract No. DE-AC02 O5CH1123. The last author (K.K.) also acknowledges the funding provided for this work by the UCB-KAUST Academic Excellence Alliance (AEA) Program. The IR instrumentation was purchased with funding from the Director, Office of Basic Energy Sciences, Materials Science and Engineering Division of the U.S, Department of Energy.
dc.publisherAmerican Chemical Society (ACS)
dc.titleA Catalytic Path for Electrolyte Reduction in Lithium-Ion Cells Revealed by in Situ Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy
dc.typeArticle
dc.identifier.journalJournal of the American Chemical Society
dc.contributor.institutionUC Berkeley, Berkeley, United States
dc.contributor.institutionLawrence Berkeley National Laboratory, Berkeley, United States
kaust.grant.programAcademic Excellence Alliance (AEA)
dc.date.published-online2015-02-25
dc.date.published-print2015-03-11


This item appears in the following Collection(s)

Show simple item record