Study on improving the elongation of lithium copper foil with new additives at high temperature
In view of the current low elongation of the existing copper foil,which causes the negative electrode of lithium battery to break,the production test system was used to prepare lithium copper foil with high elongation in order to solve the problem of battery break and short service life caused by the broken tape,and the effect of new additives E-P and E-M on the elongation performance of lithium cop-per foil at high temperature was mainly studied.The results show that additive E-M has good brighten-ing effect and can be used as a substitute for common brighteners.As additives E-P or E-M act alone,the elongation can be improved to a certain extent.However,when they act together,the surface mor-phology of lithium copper foil is smoother,the elongation at high temperature can be increased by 45%-46%,and the apparent and other properties are good,so the copper foil can meet customers'require-ments.
electrolytic copper foillithium copper foilnew additiveselongation at high temperature
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