Large-Scale and Low-Cost Motivation of Nitrogen-Doped Commercial Activated Carbon for High-Energy-Density Supercapacitor

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Shuai Zhang
  • Xiaoze Shi
  • Xuecheng Chen
  • Dengsong Zhang
  • Xianjie Liu
  • Zhibin Zhang
  • Tao Tang
  • Ewa Mijowska

Detail(s)

Original languageEnglish
Pages (from-to)4234-4243
Journal / PublicationACS Applied Energy Materials
Volume2
Issue number6
Early online date29 May 2019
Publication statusPublished - 24 Jun 2019

Abstract

The growing requirement for high-performance energy-storage devices has spurred the development of supercapacitors, but the low energy density remains a technical hurdle. In this work, porous nitrogen-doped activated carbon (NAC) is prepared on a large scale from commercial activated carbon (AC) and inexpensive chemicals by a one-step method. The NAC material with 3.1 wt % nitrogen has a high specific surface area of 1186 m2 g-1 and shows a specific capacitance of 427 F g-1 in a symmetric cell with an aqueous electrolyte. 98.2% of the capacity is reserved after 20 000 cycles at 20 A g-1. The energy densities of the NAC are 17.2 and 87.8 Wh kg-1 in acidic and organic electrolytes, respectively. Moreover, this simple process is readily scalable to address commercial demand and can be extended to the motivation of a variety of carbon-based materials with poor capacitances.

Research Area(s)

  • supercapacitor, heteroatom doping, activated carbon, CVD, low cost, energy storage

Citation Format(s)

Large-Scale and Low-Cost Motivation of Nitrogen-Doped Commercial Activated Carbon for High-Energy-Density Supercapacitor. / Zhang, Shuai; Shi, Xiaoze; Chen, Xuecheng; Zhang, Dengsong; Liu, Xianjie; Zhang, Zhibin; Chu, Paul K.; Tang, Tao; Mijowska, Ewa.

In: ACS Applied Energy Materials, Vol. 2, No. 6, 24.06.2019, p. 4234-4243.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review