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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 8
BKCSDE 23(8)
August 20, 2002

Title	The Polyaniline Electrode Doped with Li Salt and Protonic Acid in Lithium Secondary Battery
Author	Kwang Sun Ryu, Kwang Man Kim, Young-Sik Hong, Yong Joon Park, Soon Ho Chang
Keywords	Lithium battery, Polymer electrode, Conducting polymer, Polyaniline, Li salt doping
Abstract	We prepared the polyaniline (Pani) film and powder by chemical polymerization and doping with different dopants and also investigated the capability of Li//polyaniline cells after assembling. The oxidation/reduction potentials and electrochemical reaction of Li//polyaniline cells were tested by cyclic voltammetry technique. The Li//Pani-HCl cells with 10% and 20% conductors show a little larger specific discharge capacities than that without conductor. The highest discharge capacity of almost 50 mAh/g at 100^th cycle is also achieved. However, Li//Pani-LiPF₆ with 20% conductor shows a remarkable performance of ~90 mAh/g at 100^th cycle. This is feasible value for using as the positive electrode material of lithium ion secondary batteries. It is also proved that the powder type electrode of Pani is better to use than the film type one to improve the specific discharge capacity and its stability with cycle.
Page	1144 - 1148
Full Text	PDF

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