Atomic layer deposition-induced integration of N-doped carbon particles on carbon foam for flexible supercapacitor

Flexible devices have attracted abundant attention in energy storage systems. In this paper, we presented a novel approach for fabricating flexible supercapacitor based on metal organic frameworks-derived material. In this approach, a uniform zeolitic imidazolate frameworks-8 layer with a high mass loading was deposited on a flexible carbon foam (CF) skeleton efficiently by the induction of a uniform ZnO nanomembrane prepared via an atomic layer deposition technique. A flexible N-doped carbon particle-carbon foam (N-CP-CF) composite with a hierarchically porous structure and a large specific surface area (i.e., 538 m(2) g(-1)) was obtained in a subsequent pyrolysis process. The resultant materials have the excellent electrochemical performance (i.e., a high specific capacitance of 300 F g(-1) and a high energy density of 20.8 W h kg(-1)). The N-CP-CF composite can provide a stable capacitance (i.e., 250 F g(-1)) and an energy density (i.e., 17.36 W h kg(-1)) under large deformation (25% of original thickness). This work could propose a promising strategy in fabrication of flexible electrode with a large potential towards energy storage applications in the future. (c) 2020 The Chinese Ceramic Society. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).