ADDITIVE FOR POSITIVE ELECTRODES OF LITHIUM SECONDARY BATTERIES, AND POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES
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United States of America Patent
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Issued Date -
Feb 20, 2014
app pub date -
Jan 12, 2012
filing date -
Jan 12, 2011
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Abandoned
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Abstract
Provided are an additive for positive electrodes, which is capable of increasing the output of a lithium secondary battery and is capable of maintaining cycle characteristics even during high-speed charge and discharge; and a positive electrode for lithium secondary batteries. The additive for positive electrodes of lithium secondary batteries, which contains, as an essential constituent, a substituted polythiophene that has a repeating unit, which is obtained by substituting a hydrogen atom in the 3-position and/or in the 4-position of a thiophene ring with at least one group that is selected from the group consisting of a perfloroalkylalkoxy group, a perfloroalkoxy group, a perfloroalkoxyalkyl group and an alkyl group substituted with the perfloroalkylalkoxy group, as at least a part of a thiophene repeating group.
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