Rao Kummara Madhusudana, Prasad Mooni Siva, Rosaiah P, Karim Mohammad Rezaul, Han Sung Soo
School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, Republic of Korea.
Department of Chemistry, Marri Laxman Reddy institute of Technology and Management (MLRITM), Dundigal, Hyderabad, Telangana 500043, India.
Int J Biol Macromol. 2024 Dec;282(Pt 3):137067. doi: 10.1016/j.ijbiomac.2024.137067. Epub 2024 Oct 29.
The use of sustainable natural sources to fabricate porous carbon materials has garnered significant interest in energy storage. This study proposes a method for synthesizing sulfur-doped porous carbon (S‑carbon) materials via the carbonization of bacterial cellulose (BC) impregnated with sodium lignosulfonate (LS), which functions as a renewable source of both carbon and sulfur, eliminating the need for external activation processes. The carbonization process yielded S‑carbon with a notable sulfur content of 1.4 % and a high specific surface area of 650 m/g. Transmission electron microscopy (TEM) images reveal fibrous carbon structures with mesopores and micropores in the S‑carbon material. Electrochemically, S‑carbon exhibited an impressive specific capacitance of 272.6 F g at a current density of 1 A/g and demonstrated outstanding cycling stability, retaining 86 % of its capacitance after 5000 cycles at a current density of 6 A/g in a 3 M KOH electrolyte. The development of sulfur-doped fibrous carbon from BC-LS offers promising potential as a sustainable electrode material for supercapacitors.
利用可持续的天然来源制备多孔碳材料在能量存储领域引起了广泛关注。本研究提出了一种通过对浸渍有木质素磺酸钠（LS）的细菌纤维素（BC）进行碳化来合成硫掺杂多孔碳（S-碳）材料的方法，其中木质素磺酸钠作为碳和硫的可再生来源，无需外部活化过程。碳化过程得到的S-碳硫含量显著，为1.4%，比表面积高达650 m²/g。透射电子显微镜（TEM）图像显示S-碳材料中具有中孔和微孔的纤维状碳结构。在电化学方面，S-碳在1 A/g的电流密度下表现出令人印象深刻的272.6 F/g的比电容，并展现出出色的循环稳定性，在3 M KOH电解液中于6 A/g的电流密度下经过5000次循环后仍保留其电容的86%。由BC-LS制备的硫掺杂纤维状碳作为超级电容器的可持续电极材料具有广阔的应用前景。
