期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 11, 期 10, 页码 1900-1903出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.08.012
关键词
Cycling performance; High voltage; Lithium-ion cells; Thiophene; Thermal stability
资金
- Ministry of Knowledge and Economy (MKE)
- Korean government (MEST) [R01-2008-000-20944-0]
- National Research Foundation of Korea [2008-0061425, R01-2008-000-20944-0, 과C6A1908] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study demonstrates that the addition of thiophene improves the cycle life of lithium-ion cells at high voltage. Electrochemical impedance spectroscopy results suggest that addition of thiophene significantly suppresses the increase of the charge transfer resistance that occurs during cycling up to high voltage. Differential scanning calorimetric studies showed that the thermal stability of fully charged LiCOO2 cathode was also enhanced in the presence of thiophene. (C) 2009 Elsevier B.V. All rights reserved.
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