K. Tokumitsu et al., Structural characterization and electrochemical properties of non-graphitizable carbons for a lithium ion battery, J POWER SOU, 90(2), 2000, pp. 206-213
Citations number
36
Categorie Soggetti
Physical Chemistry/Chemical Physics","Environmental Engineering & Energy
Structural characteristics and electrochemical properties of non-graphitiza
ble carbons were investigated. The carbons were obtained by heat-treating t
he oxidized graphitizable carbon precursors with various molar ratios of ar
omatic compounds and cross-linking agent. The discharge profiles of the non
-graphitizable carbons heat-treated at 600 degrees C had one plateau discha
rge region at 1.0 V vs. Li/Li+, which is similar to graphitizable ones heat
-treated at the temperature. However, the discharge profiles of the non-gra
phitizable carbons heat-treated above 800 degrees C exhibited two plateau d
ischarge regions at 0.2 and 1.0 V vs. Li/Li+. The discharge capacities of t
he non-graphitizable carbons increased with an increase of cavity volume, w
hich was controlled by molar ratios of aromatic compound and cross-linking
agent. The structural parameters proposed were measured to compare with eac
h other, and it was found that they showed good correlation. (C) 2000 Elsev
ier Science S.A. All rights reserved.