리튬이온전지에서의 구리용출 분석

Lithium ion battery is developed with increasing use of electrical supplies. So these battery systems are required the safety and reliability to protect users and supplies. However, graphite coated Cu is dissolved when discharging voltage is over 3.5 V(vs. Li/Li+) at the end of overdischarging process. It is made some problems like the reducing capacity or the safety of batteries. Considering calculated HOMO-LUMO values, we selected some organic compounds to control Cu dissolution at the end of overdischarging. We have studied about measured oxidation potential of Cu dissolution by using LSV, we can prove that these organic compounds could reduce the Cu dissolution at the same conditions.