Journal
JOURNAL OF POROUS MATERIALS
Volume 29, Issue 2, Pages 559-569Publisher
SPRINGER
DOI: 10.1007/s10934-021-01181-2
Keywords
Bamboo; Hierarchical porous carbon; Hydrothermal; Heteroatom doping; Supercapacitor
Funding
- National Natural Science Foundation of China [31901375]
- Scientific Research Project of Education Department of Hunan Province [18B173]
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In this study, biomass porous carbon with hierarchical pores and abundant heteroatoms was obtained from bamboo cellulose using a green cellulose solvent as the activation agent and nitrogen source. The obtained porous carbon showed excellent capacitive performance and cyclic stability as a supercapacitor electrode. The influence of hydrothermal temperature on cellulose structure and pore formation was also demonstrated.
Biomass porous carbon possessing hierarchical pores and abundant heteroatoms has emerged as a sustainable and cost-effective functional material. Herein, a green cellulose solvent was employed as the activation agent and nitrogen source to obtain this distinctive structure from bamboo cellulose fibers. With the assistance of thermal treatment, the solvent could fully infiltrate into cellulose structure of raw material and result in the cellulosic structure damage, forming ultimately the three-dimensional conductive network, hierarchical pores, as well as high heteroatom doping (8.43 at%). Benefited from the unique structure, the obtained porous carbon as the supercapacitor electrode showed excellent capacitive performance (280 F/g at 0.3 A/g), good rate capability and cyclic stability. Moreover, influences of hydrothermal temperature on cellulose structure, pore formation, and the resultant supercapacitor performance were demonstrated. This green strategy shows potential for producing hierarchical porous carbon with high heteroatoms from biomass resources.
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