Lightweight and Flexible Current Collector via Exfoliation of Graphite Electrode as Lithium Ion Batteries
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내용
According to the development for flexible devices such as wearable devices, lightweight and flexible batteries are regarded as the next-generation energy storage devices, including supercapacitors, Li-ion batteries (LIB). Among them, LIB has excellent advantages for high-performance flexible batteries due to its high energy density and long cycle life. However, there are some issues with the development of flexible LIB. In the case of commercial metal current collectors with high electrical conductivity, it has a high mass density, which causes a decrease in the energy density. Herein, we reported the lightweight and flexible high-performance LIB via the exfoliation method of graphite paper by a poly(imide)(PI) tape. We intended high electrical conductivity of graphite and flexibility of PI film as a current collector. We also utilized the simple and cost-efficient tape-induced exfoliation method. This strategy has a high potential for the development of flexible devices.