用于超级电容器的黑液和木材炭衍生的氮掺杂碳材料

Black Liquor and Wood Char-Derived Nitrogen-Doped Carbon Materials for Supercapacitors.

作者信息

Tamasauskaite-Tamasiunaite Loreta, Jablonskienė Jolita, Šimkūnaitė Dijana, Volperts Aleksandrs, Plavniece Ance, Dobele Galina, Zhurinsh Aivars, Jasulaitiene Vitalija, Niaura Gediminas, Drabavicius Audrius, Juel Mari, Colmenares-Rausseo Luis, Kruusenberg Ivar, Kaare Kätlin, Norkus Eugenijus

机构信息

Center for Physical Sciences and Technology (FTMC), LT-10257 Vilnius, Lithuania.

Latvian State Institute of Wood Chemistry, LV-1006 Riga, Latvia.

出版信息

Materials (Basel). 2023 Mar 23;16(7):2551. doi: 10.3390/ma16072551.

DOI:10.3390/ma16072551

PMID:37048845

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10094988/

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 m g, 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 was achieved in a 1 M NaSO aqueous solution at a current density of 0.2 A g. In addition, the specific capacitance retention was 99% after 1000 cycles, indicating good electrochemical stability.

摘要

在此，我们提出了一种以硫酸盐制浆残渣、黑液和木炭为碳源合成高效氮掺杂碳材料的路线。基于黑液及其与木炭的混合物合成的氮掺杂碳材料，分别表现出2481和2690 m²/g的高比表面积（SSAs），以及平均尺寸为2.9 - 4.6 nm的大量中孔。合成的氮掺杂碳材料中的氮含量约为3 - 4原子%。在1 M Na₂SO₄水溶液中，电流密度为0.2 A/g时，实现了约81 - 142 F/g的比电容。此外，在1000次循环后，比电容保持率为99%，表明具有良好的电化学稳定性。