Ammoxidation of brown coals for supercapacitors

Krzysztof Jurewicz*, Krzysztof Babel, Artur Ziólkowski, Helena Wachowska, Mieczyslaw Kozlowski

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    69 Citations (Scopus)


    The paper reports results of a study on the use of active carbon from ammoxidated brown coal as electrode material for supercapacitors. The raw coal was subjected to demineralisation and ammoxidation by a mixture of ammonia and air, then it was carbonised and activated by steam or carbon dioxide. The electrochemical properties of carbons were determined by galvanostatic and potentiodynamic methods for water electrolytes. The best capacitance parameters of ca. 220 F/g in acidic and ca. 140 F/g in alkaline conditions were obtained for active carbon containing from 2 to 3 wt.% of nitrogen.

    Original languageEnglish
    Pages (from-to)191-198
    Number of pages8
    JournalFuel Processing Technology
    Publication statusPublished - 20 Jun 2002


    • Active carbon
    • Ammoxidation
    • Supercapacitor


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