Black Liquor and Wood Char-Derived Nitrogen-Doped Carbon Materials for Supercapacitors
Tamasauskaite-Tamasiunaite, Loreta; Jablonskienė, Jolita; Šimkūnaitė, Dijana; Volperts, Aleksandrs; Plavniece, Ance; Dobele, Galina; Zhurinsh, Aivars; Jasulaitiene, Vitalija; Niaura, Gediminas; Drabavicius, Audrius; Juel, Mari; Rausseo, Luis César Colmenares; Kruusenberg, Ivar; Kaare, Kätlin; Norkus, Eugenijus
Peer reviewed, Journal article
Published version
Date
2023Metadata
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- Publikasjoner fra CRIStin - SINTEF AS [5674]
- SINTEF Industri [1542]
Abstract
Herein, we present a synthesis route for high-efficiency nitrogen-doped carbon materials using kraft pulping residue, black liquor, and wood charcoal as carbon sources. The synthesized nitrogen-doped carbon materials, based on black liquor and its mixture with wood charcoal, exhibited high specific surface areas (SSAs) of 2481 and 2690 m2 g−1, respectively, as well as a high volume of mesopores with an average size of 2.9–4.6 nm. The nitrogen content was approximately 3–4 at% in the synthesized nitrogen-doped carbon materials. A specific capacitance of approximately 81–142 F g−1 was achieved in a 1 M Na2SO4 aqueous solution at a current density of 0.2 A g−1. In addition, the specific capacitance retention was 99% after 1000 cycles, indicating good electrochemical stability.