Polymerization of Hollow Core-Shell particle morphology and electrochemical performance

Abstract

With the recent development of portable electronic devices and the advent of the fourth industrial revolution, the research of the battery has spurred further and it has now become a large-capacity and high-power energy storage system that can operate even the electric vehicle. Until these days, most of the researches on batteries have been focused on active materials, and research of binder has been relatively small. However, Binder research is essential to improve the stability and performance of batteries, and to realize flexible batteries. In this research, the synthesis of core-shell and hollow core shell will be studied and the morphology ofthose polymers will be investigated. As a polymer binder in the electrode, the core shell and the hollow core-shell were applied in the electrochemical system such as LTO anode of lithium ion battery (LIB) and also activated carbon electrode of electric double layer capacitor (EDLC). First of all, in polymerization system, the MMA-BA-MAA copolymer emulsions were prepared as seed latices and the polymerization of MMA-MAA was consequently carried out to prepare core particles which have carboxyl group. The adhesive and conductive shell was then synthesized onto the core using St, BA, AN. The hollow polymer was obtained by alkalization treatment of the core-shell polymer using sodium hydroxide solution. With this polymers, LIB and EDLC were made and electrochemical performances were tested such as cycle, rate capability, CV, EIS.