| Autor: |
Zhen Shang, Xingye An, Liqin Liu, Shuangxi Nie, Fiona Baker, Haibing Cao, Zhengbai Cheng, Hongbin Liu, Yonghao Ni |
| Rok vydání: |
2022 |
| DOI: |
10.21203/rs.3.rs-2062082/v1 |
| Popis: |
Boron (B) and nitrogen (N) co-doped 3D hierarchical porous carbon (BNPC) were successfully fabricated from CNF/BNNS/ZIF-8 nanocomposites prepared by 2D boron nitride nanosheets, ZIF-8 nanoparticles, and wheat straw based cellulose nanofibers. Herein, CNF/ZIF-8 acts as versatile skeleton and imparts partial N dopant into porous carbon structure, while the introduced BNNS can help strengthen the hierarchical porous superstructure and endow abundant B/N co-dopants within BNPC matrix. The obtained BNPC electrode possesses a high specific surface area of 505.4 m2/g and high B/N co-doping content with desirable hydrophilicity. Supercapacitors assembled with BNPC-2 electrode exhibited advanced electrochemical performance with high capacitance stability even after 5000 charge-discharge cycles, exhibited outstanding energy density and power density characters, and the highest specific capacitance of 433.4 F/g at 1.0 A/g, compared with other similar reports. This study proposes a facile and sustainable strategy for efficiently fabrication of rich B/N co-doped hierarchical porous carbon electrodes from agricultural waste biomass for advanced supercapacitor performance. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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