High Specific Capacitance Based on N-Doped Microporous Carbon in [EMIm]AlxCly Ionic Liquid Electrolyte. Issue 13 (1st November 2017)

• Record Type: Journal Article
• Authors: Wang, Shuai; Kang, Zepeng; Li, Shijie; Tu, Jiguo; Zhu, Jun; Jiao, Shuqiang
• Is Part Of: Journal of the Electrochemical Society. Volume 164:Issue 13(2017)
• Page Start: A3319
• Page End: A3325
• Publication Date: 2017-11-01
• Subjects: Carbon -- supercapacitor; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.1741713jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Carbon-based electrical double-layer capacitors (EDLCs) store charges through the physisorption of electrolyte ions onto porous carbon electrodes and subsequently can provide high electrical power. The control over morphology and microstructure of carbon-based electrode materials is an effective strategy to provide high surface area and efficient paths for ions diffusion. Here, we report on the fabrication of N-doped microporous carbons through a two-step carbonization method using an Al-based porous coordination polymer (Al-PCP) as template. The unique 3D pore structure of N-doped microporous carbon (PCP-1600) gives rise to a high BET surface area (up to 1892.38 m 2 g −1 ) and a corresponding pore volume of 1.26 cc g −1 . The carbon-based electrodes exhibit specific capacitance of ∼280 F g −1 and good cycling stability in ionic liquid electrolyte. These performance can be assigned to the unique pore structure of N-doped microporous carbons and make them potentially promising electrodes for energy storage devices.