ac imepedance behaviour of lithium electrode in organic electrolyte solutions containing additives
✍ Scribed by Masayuki Morita; Seiki Aoki; Yoshiharu Matsuda
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 496 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
Effects of organic additives on the (IC impedance behaviour of rechargeable lithium electrode in propylene carbonate dissolving LiClO, (PC/LiClO,) have been studied. Addition of 2-methylfuran, Zmethylthiophene or benzene to the electrolyte solution improved the coulombic efficiencies of lithium during deposition/dissolution cycles, and decreased the electrical resistance at the electrode-electrolyte interface. The time constant of cc impedance at the interface without the additives kept constant during the electrode immersion, whereas the time constant in the solution containing 2-methylfuran or 2-methylthiophene varied with the immersion time. Addition of benzene to the electrolyte did not change the time constant of the impedance. The impedance profiles during the deposition/dissolution cycles suggested some surface reaction in the solution with 2-methylfuran or 2-methylthiophene and an adsorption process in the solution containing benzene.