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    • Simultaneous enhancement of specific capacitance and potential window of graphene-based electric double-layer capacitors using ferroelectric polymers
    Authors: Viet ThongLe; HanjunRyu; Sang A.Han; HaoVan Bui; Viet HuongNguyen; NguyenVan Hieu; Ju-HyuckLee; Sang-WooKim; Young HeeLee;  Advisor: -;  Co-Author: - (2021)

    Despite their high power density, aqueous-based electric double-layer capacitors (EDLCs) possess relatively low energy density due to the limitation of potential window (~1.0 V) and low specific capacitance of active materials. To increase the energy density without sacrificing the power density, it is highly desired to achieve a simultaneous improvement of both specific capacitance and potential window of EDLCs. However, this remains a major challenge that is not been solved up to date. This work demonstrates that by inserting a polarized-polyvinylidene fluoride (PVDF) ferroelectric layer underneath the graphene, a simultaneous enhancement of both areal capacitance and potential wind...