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首页> 外文期刊>Journal of Applied Polymer Science >Crosslinked quaternized poly(arylene ether sulfone) copolymer membrane applied in an electric double-layer capacitor for high energy density
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Crosslinked quaternized poly(arylene ether sulfone) copolymer membrane applied in an electric double-layer capacitor for high energy density

机译：交联的季铵化聚（亚芳基醚砜）共聚物膜在电双层电容器中施加，用于高能量密度

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The low energy density of supercapacitors, especially supercapacitors based on aqueous electrolytes, is the main factor limiting their application, and the energy density is closely related to the operating potential window of the supercapacitor. The polymer electrolyte is the main contributor to the safe operation and good ion conductivity of the supercapacitor. In this study, a crosslinked quaternized poly(arylene ether sulfone) (PAES) membrane was prepared via crosslinking during membrane formation with a thermal-only treatment and applied in an electric double-layer capacitor (EDLC). The pre-prepared PAES membrane formed a polymer electrolyte with 1 mol/L Li2SO4 and was then fabricated into an EDLC single cell. The properties of both the membrane and ELDC were investigated. The preferred cPAES-N-0.2 polymer electrolyte showed an ionic conductivity of 1.18 mS/cm. The optimized EDLC exhibited a single-electrode gravimetric capacitance of 104.92 F/g at a current density of 1.0 A/g and a high operating potential window (1.5 V); it, thereby, achieved a high energy density of 8.20 W h/kg. The EDLC also exhibited excellent cycling properties over 3000 charge-discharge cycles. The crosslinked structures promoted the tensile strength and thermal stability of the PAES membranes; this was accompanied by a slight decrease in the ionic conductivity. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47759.
机译：超级电容器的低能量密度，特别是基于水电解质的超级电容器，是限制其应用的主要因素，并且能量密度与超级电容器的操作潜在窗口密切相关。聚合物电解质是超级电容器安全操作和良好离子电导率的主要因素。在该研究中，通过在膜形成期间通过仅热处理并施加在电双层电容器（EDLC）中通过交联制备交联的季铵化聚（亚芳醚砜）（PAES）膜。预制的PAES膜形成具有1mol / L Li 2 SO 4的聚合物电解质，然后制造成EDLC单细胞。研究了膜和ELDC的性质。优选的CPAE-N-0.2聚合物电解质显示离子电导率为1.18ms / cm。优化的EDLC以1.0A / g的电流密度为104.92 f / g的单电极重量电容和高运行电位窗口（1.5V）;由此，达到8.20Wh / kg的高能量密度。 EDLC还具有超过3000个电荷放电循环的优异循环性能。交联结构促进了Paes膜的拉伸强度和热稳定性;这伴随着离子电导率的轻微降低。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,4759。

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