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Electrochemical intercalation of cationic and anionic species from a lithium perchlorate-propylene carbonate system - a rocking-chair type of dual-intercalation system
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DOI：10.1016/S0378-7753(98)00152-9.png)
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Abstract
En 中文
The reductive and oxidative intercalation of ionic species of lithium perchlorate (LiClO4,) in propylene carbonate (PC) medium are carried out to develop a dual-intercalation battery system. Cyclic voltammetry (CV), potentiostatic transients (i-t), galvanostatic charging, thermogravimetry (TG) and differential thermal analysis (DTA) are performed to establish the intercalation behaviour of both lithium and perchlorate ionic species. A polypropylene graphite composite electrode material containing 20 wt.% polypropylene as a binder is found to be a suitable host material for dual intercalation studies. The intercalation/de-intercalation efficiency (IDE) increases with increasing sweep rate and reaches up to 90% for Li+ and 65% for ClO4- ions at a sweep rate of 40 mV S-1. The formation of a passive film decreases the IDE during the first intercalation/de-intercalation cycle. The open-circuit potential for a battery assembly involving these two electrodes is in the range 3.8 to 4.0 V. (C) 1998 Elsevier Science S.A. All rights reserved.
Keywords:
graphite electrodes
lithium-ion batteries
intercalation
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