NDLI: Effect of oxidation on the performance of low-temperature petroleum cokes as anodes in lithium ion batteries

Content Provider	Springer Nature Link
Author	Concheso, A. Santamaría, R. Menéndez, R. Jiménez Mateos, J. M. Alcántara, R. Ortiz, G. F. Lavela, P. Tirado, J. L.
Copyright Year	2008
Abstract	The effect of an oxidative treatment on the electrochemical performance of various low-temperature cokes as anodes in lithium ion batteries was examined in order to optimize their chemical composition and textural properties. Annealing in a stream of dry synthetic air over short time and temperature ranges was found to result in substantially increased cell capacity and improved capacity retention during cycling in coke oxidized at 350 °C for 1 h, which exhibited a capacity as high as 385 mAh g$^{−1}$ after 20 cycles at C/50. However, raising the oxidation temperature to 500 °C resulted in undesirably increased irreversible capacity and polarization between the charge and discharge branches, the effect being confirmed by the high impedance values obtained after only a few cycles. $^{7}$Li MAS NMR spectroscopy was used to assess covalency in lithium bonds and its relationship to electrochemical performance in the studied batteries.
Starting Page	899
Ending Page	906
Page Count	8
File Format	PDF
ISSN	0021891X
Journal	Journal of Applied Electrochemistry
Volume Number	39
Issue Number	6
e-ISSN	15728838
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-12-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lithium Coke Oxidation Battery Industrial Chemistry/Chemical Engineering Physical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Chemical Engineering Electrochemistry

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