RT Journal Article
T1 Polyacrylonitrile-b-polystyrene block copolymer-derived hierarchical porous carbon materials for supercapacitor
A1 Álvarez Gómez, Ainhoa
A1 Yuan, Jiayin
A1 Fernandez Blazquez, Juan P.
A1 San Miguel Arnanz, Verónica
A1 Serrano Prieto, María Bernarda
AB 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).
PB MDPI
SN 2073-4360
YR 2022
FD 2022-12-01
LK https://hdl.handle.net/10016/37177
UL https://hdl.handle.net/10016/37177
LA eng
NO This article belongs to the Special Issue Advances and Applications of Block Copolymers.
NO This research was financially supported by Spanish Ministry of Science and Innovation (PID2021-125302NB-I00). J.Y. is grateful for financial support from the Wallenberg Academy Fellow program (Grant KAW 2017.0166) from the Knut & Alice Wallenberg Foundation in Sweden.
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RD 18 jul. 2024