Biomass-derived robust three-dimensional porous carbon for high volumetric performance supercapacitors

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

3 Scopus Citations
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Author(s)

  • Xiaoguang Liu
  • Changde Ma
  • Jiaxin Li
  • Beata Zielinska
  • Ryszard J. Kalenczuk
  • Xuecheng Chen
  • Tao Tang
  • Ewa Mijowska

Detail(s)

Original languageEnglish
Pages (from-to)1-9
Journal / PublicationJournal of Power Sources
Volume412
Early online date29 Nov 2018
Publication statusPublished - 1 Feb 2019

Abstract

The inherent low volumetric performance of two-dimensional (2D) carbon materials hinders their practical usage in portable devices. Three-dimensional (3D) carbon materials derived from sustainable biomass have been widely investigated but also suffer from the moderate volumetric performance. In this work, using biomass (jujube) as carbon precursor, robust 3D porous carbon with a high particle density of 1.06 g cm−3 is synthesized through high-temperature carbonization and subsequent activation. In three-electrode system, the electrode exhibits an ultrahigh volumetric capacitance of 476 F cm−3 in 6 M KOH electrolyte, which is much higher than previously reported results. The symmetrical two-electrode supercapacitor delivers excellent rate capability (75% capacitance retention at 20 A g−1) as well as superior cycle stability (91% capacitance retention after 10,000 cycles) in 1 M H2SO4 electrolyte. Furthermore, an energy density as high as 13 Wh L−1 at a power density of 477 W L−1 is demonstrated in 1 M Li2SO4 electrolyte. The high volumetric performance of our biomass-derived porous carbon meets the requirements of portable devices and the fabrication process can be scaled up easily to industrial levels.

Research Area(s)

  • Energy storage, High particle density, High volumetric capacitance, High-temperature carbonization, Robust 3D porous carbon

Citation Format(s)

Biomass-derived robust three-dimensional porous carbon for high volumetric performance supercapacitors. / Liu, Xiaoguang; Ma, Changde; Li, Jiaxin; Zielinska, Beata; Kalenczuk, Ryszard J.; Chen, Xuecheng; Chu, Paul K.; Tang, Tao; Mijowska, Ewa.

In: Journal of Power Sources, Vol. 412, 01.02.2019, p. 1-9.

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