How to make nanoporous polymers more robust for battery separator applications
발표자
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초록
내용
In electrochemical batteries, a permselective separator that facilitates the conduction of the charge carrier and prevents crossover of active materials is considered an essential component to improve battery performances. However, conventional macroporous separators such as Celgard do not provide permselectivity and suffer from the crossover across the membrane. Here we propose that a nanoporous polymer membrane possessing well-defined and 3D continuous nanopores with tailorable surface chemistry can be an appealing candidate as permselective separators. To realize the potential, it is critical to secure the thermal and chemical stability of the membrane in the operation condition of the electrochemical system. We will discuss the fabrication of robust and surface-functional nanoporous membranes based on the polymerization-induced microphase separation process. Strategies to improve the membrane stability and the permselective transport as a function of pore size will be presented.