High-performance and flexible lithium-ion battery anodes using modified buckypaper

Abstract

Conventional electrodes for lithium ion batteries, represented as the electrode films casted on the metal foil, are struggling to fulfill the requirements for the flexible electronics due to their heavy, thick, rigid, and brittle structure, which can lead to the deterioration of electrical contact followed by low cycling stability under the repeating mechanical stress. Therefore, development of stable and flexible electrodes is of crucial demand for the implementation of lithium ion batteries to the flexible electronic devices. In this study we demonstrate that the flexible and light buckypaper with high electrical conductivity is the promising alternative to the metal current collectors. In addition, the high capacity anode based on SiO2 nanoparticles is introduced to the functionalized buckypaper. Our electrode reveals high energy storage capability (1101 mAh/g) even after 300 cycles. The composite electrode can be considered the potential high-performance anode for flexible electronic devices.