Rod-shape porous carbon derived from aniline modified lignin for symmetric supercapacitors

Keliang Wang, Yuhe Cao, Xiaomin Wang, Maria Andrea Castro, Bing Luo, Zhengrong Gu, Jun Liu, James D. Hoefelmeyer, Qihua Fan

    Research output: Contribution to journalArticle

    44 Scopus citations

    Abstract

    Rod-shape porous carbon was prepared from aniline modified lignin via KOH activation and used as electrode materials for supercapacitors. The specific surface area, pore size and shape could be modulated by the carbonization temperature, which significantly affected the electrochemical performance. Unique rod-shape carbon with massive pores and a high BET surface area of 2265 m2 g-1 were obtained at 700 °C in contrast to irregular morphology created at other carbonization temperatures. In 6 mol L-1 KOH electrolyte, a specific capacitance of 336 F g-1, small resistance of 0.9 ω and stable charge/discharge at current density of 1 A g-1 after 1, 000 cycles were achieved using rod-shape porous carbon as electrodes in an electrical double layer capacitor.

    Original languageEnglish (US)
    Pages (from-to)462-467
    Number of pages6
    JournalJournal of Power Sources
    Volume307
    DOIs
    StatePublished - Mar 1 2016

    Keywords

    • Activation
    • Lignin
    • Rod-shape porous carbon
    • Supercapacitor

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