Jump to main content
Jump to site search


High-performance supercapacitor energy storage using a carbon material derived from lignin by bacterial activation before carbonization

Author affiliations

Abstract

The conversion of low-cost renewable lignin could enable the economic fabrication of carbon materials for energy storage devices. However, the traditional activation methods for the production of a lignin-derived porous carbon with a large specific surface area are complex and expensive, and some activators can cause pollution. In this paper, we propose a novel green bacterial activation method for the synthesis of a carbon material with a large surface area of up to 1831 m2 g−1 and abundant micropores and mesopores through a conventional carbonization procedure with a simple bacterial culture process. The transformation of the lignin structure by the bacteria optimizes the pore structure of the derived carbon and promotes graphitization. Consequently, as an electrode in a supercapacitor, the obtained material exhibits a very high specific capacitance (428 F g−1 at 1 A g−1), high cycling stability (capacitance retention of 96.7% after 10 000 cycles at 5 A g−1), and superior rate performance in an aqueous electrolyte. In addition, the symmetric supercapacitor based on the bacteria-activated lignin-derived carbon exhibits a superior energy density of 66.18 W h kg−1 at 312 W kg−1 in an ionic liquid electrolyte system. These excellent features demonstrate the large potential of the developed material for applications in high-performance supercapacitors. Furthermore, the proposed bacteria-activation method can guide a novel bio-modification for material syntheses.

Graphical abstract: High-performance supercapacitor energy storage using a carbon material derived from lignin by bacterial activation before carbonization

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Apr 2019, accepted on 19 Aug 2019 and first published on 20 Aug 2019


Article type: Paper
DOI: 10.1039/C9TA04369A
J. Mater. Chem. A, 2019, Advance Article

  •   Request permissions

    High-performance supercapacitor energy storage using a carbon material derived from lignin by bacterial activation before carbonization

    K. Zhang, M. Liu, T. Zhang, X. Min, Z. Wang, L. Chai and Y. Shi, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C9TA04369A

Search articles by author

Spotlight

Advertisements