Effects of partial oxidation of PMAN carbon on their performance as anodes in 1M LiPF{sub 6}/EC-DMC solutions

A study was undertaken to examine the effects of partial oxidation on the electrochemical performance of carbons derived from poly(methylacrylonitrile) (PMAN)-divinylbenzene (DVB) co-polymers. Mild oxidation was examined as a possible technique to increase the reversible capacity, improve cycleabili...

Full description

Bibliographic Details
Main Author: Guidotti, R. A.
Other Authors: United States. Department of Energy.
Format: Report
Language:English
Published: Sandia National Laboratories 1996
Subjects:
25 Energy Storage
Oxidation
Anodes
36 Materials Science
Metal-Nonmetal Batteries
Lithium Compounds
Service Life
Carbon
Experimental Data
Carbonic Acid Esters
Performance
Carbonic acid
Online Access:https://doi.org/10.2172/486069
http://digital.library.unt.edu/ark:/67531/metadc687546/
Description
Summary:A study was undertaken to examine the effects of partial oxidation on the electrochemical performance of carbons derived from poly(methylacrylonitrile) (PMAN)-divinylbenzene (DVB) co-polymers. Mild oxidation was examined as a possible technique to increase the reversible capacity, improve cycleability, and reduce the amount of irreversible capacity associated with the formation of the passivation layer during the first reduction. Oxidizing conditions involved treatment of the PMAN carbon prepared at 700 C with dry CO{sub 2} or with steam at 600 C for one hour. The effects on the performance in 1M LiPF{sub 6}/ethylene carbonate (EC)-dimethyl carbonate (DMC) solutions were evaluated by galvanostatic cycling tests, complex-impedance spectroscopy, and, to a more limited extent, cyclic voltammetry. Partial oxidation of PMAN carbon showed little or no overall beneficial effects in performance relative to the control.

Similar Items