Journal
PROGRESS IN SOLID STATE CHEMISTRY
Volume 42, Issue 4, Pages 65-84Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.progsolidstchem.2014.04.003
Keywords
Lithium-ion batteries; Electrolyte solutions; Novel electrolyte components; Electrode/electrolyte interfaces and interphases; Electrochemical techniques; Spectroscopic and spectrometric methods
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Funding
- German Research Foundation (DFG) within the Project Initiative PAK 177 Funktionsmaterialien und Materialanalytik zu Lithium-Hochleistungsbatterien [WI 2929/1-1, WI 2929/5-1]
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Electrolyte solutions have vital function in lithium-ion batteries. Due to their modular composition, there is a broad variety of electrolyte component combinations. In this work, we present electrochemical results on newly investigated electrolyte solution components. The standard electrolyte salt in commercial batteries, LIPF6, was replaced by new imide and sulfonate anion based salts, with enhanced stability. The use of propylene carbonate was enabled by the application of new SEI forming electrolyte additives. Electrolyte solvents, such as adiponitrile and gamma-butyrolactone were investigated in combination with LiBF4 as electrolyte salt. In order to evaluate these materials, various electrochemical techniques like galvanostatic cycling, conductivity and electrochemical stability window detection, cyclic voltammetry, etc. were applied. Furthermore, the electrode/electrolyte interfaces and interphases were studied via spectroscopic and spectrometric techniques. (C) 2014 Elsevier Ltd. All rights reserved.
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