Phenolic carbon cloth-based electric double-layer capacitors with conductive interlayers and graphene coating
Phenolic carbon cloth-based electric double-layer capacitors with conductive interlayers and graphene coating
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DOI：
10.1007/s10800-015-0909-x
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发表时间：
2016-02-01
影响因子：
2.9
通讯作者：
Lekakou, Constantina
中科院分区：
文献类型：
--
作者：
Lei, Chunhong;Markoulidis, Foivos;Lekakou, Constantina
酚醛树脂衍生的活性炭（AC）布用作大规模双电层电容器或超级电容器的电极。为了提高超级电容器的能量和功率密度，通过对Al集流体进行改性来降低碳布与铝箔集流体之间的接触电阻。对Toyal-Carbo（A（R））（表面改性铝）、DAG（A（R））（抗絮凝Acheson（TM）石墨）涂层和聚（3，4-乙撑二氧噻吩）（PEDOT）涂层等不同改性铝集流体进行了测试和比较。使用改性的铝集流体被示出大大降低AC布和铝箔之间的接触电阻。本研究中研究的另一种解决方案是通过电泳沉积（EPD）用石墨烯涂覆AC布。石墨烯涂覆的AC布显示出增加的电容和大大降低的内阻。
Phenolic resin-derived activated carbon (AC) cloths are used as electrodes for large-scale electric double-layer capacitors or supercapacitors. To increase the energy and power density of the supercapacitor, the contact resistance between the carbon cloth and the aluminium foil current collector is reduced by modifying the Al current collectors. Different modified Al current collectors, including Toyal-Carbo(A (R))(surface-modified Al), DAG(A (R)) (deflocculated Acheson (TM) graphite) coating and poly(3,4-ethylenedioxythiophene) (PEDOT) coating, have been tested and compared. The use of modified Al current collectors are shown to greatly reduce the contact resistance between the AC cloth and the Al foil. Another solution investigated in this study is to coat AC cloth with graphene through electrophoretic deposition (EPD). The graphene coated AC cloth is shown increased the capacitance and greatly reduced internal resistance.