Álvarez Gómez, AinhoaYuan, JiayinFernandez Blazquez, Juan P.San Miguel Arnanz, VerónicaSerrano Prieto, María Bernarda2023-04-242023-04-242022-12-01Álvarez-Gómez, A., Yuan, J., Fernández-Blázquez, J. P., San-Miguel, V., & Serrano, B. (2022). Polyacrylonitrile-b-Polystyrene Block Copolymer-Derived Hierarchical Porous Carbon Materials for Supercapacitor. Polymers, 14(23), 5109.2073-4360https://hdl.handle.net/10016/37177This article belongs to the Special Issue Advances and Applications of Block Copolymers.The use of block copolymers as a sacrificial template has been demonstrated to be a powerful method for obtaining porous carbons as electrode materials in energy storage devices. In this work, a block copolymer of polystyrene and polyacrylonitrile (PS−b−PAN) has been used as a precursor to produce fibers by electrospinning and powdered carbons, showing high carbon yield (~50%) due to a low sacrificial block content (fPS ≈ 0.16). Both materials have been compared structurally (in addition to comparing their electrochemical behavior). The porous carbon fibers showed superior pore formation capability and exhibited a hierarchical porous structure, with small and large mesopores and a relatively high surface area (~492 m2/g) with a considerable quantity of O/N surface content, which translates into outstanding electrochemical performance with excellent cycle stability (close to 100% capacitance retention after 10,000 cycles) and high capacitance value (254 F/g measured at 1 A/g).15eng© 2022 by the authors.Atribución 3.0 EspañaBlock copolymer templateHierarchical poresPorous carbon fibersSupercapacitorresearch articleBiología y BiomedicinaMaterialesQuímicahttps://doi.org/10.3390/polym14235109open access123, 510915Polymers14AR/0000032277