期刊
CARBOHYDRATE POLYMERS
卷 262, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2021.117966
关键词
Cellulose aerogel; Supercapacitor; Hierarchical porous carbon; ZIF-8; Polyaniline
资金
- National Natural Science Foundation of China [21603125]
- Natural Science Foundation of Shandong Province [ZR2019MEM034, ZR2019BEM015, ZR2019PB029]
- Science Education Industry Integration Innovation Pilot Project of Qilu University of Technology [2020KJCGH13]
- Key R&D project of Shandong Province? [2019****0207]
- International Cooperation Project of Shandong Academy of Sciences [2019GHPY09]
- Jinan Highend Talent Program [2019GXRC045]
- Youth Science Funds of Shandong Academy of Sciences [2019QN0024]
The study developed a ZIF-8/PANI@CA composite material with high specific surface area and excellent capacitance performance as an electrode for supercapacitors.
Cellulose derived carbon aerogel (CA) with unique three-dimensional network coated with polyaniline (PANI) on its surface is used as a scaffolding framework to anchor ZIF-8. The designed ZIF-8 derived porous carbon (ZC)/ PANI@CA (ZPCA) hybrid carbon composite through a facile solution immersion chemical route and subsequent carbonization process is employed as electrode for supercapacitor, which has contributed a large specific surface area, a hierarchical porous structure and reasonable N content (up to 6.27 at.%). The synthesized ZPCA electrode achieves an outstanding capacitance of 388 F g-1 at 0.5 A g-1 as well as an excellent cycling performance. More inspiringly, the symmetric supercapacitor based ZPCA achieves a high energy density of 13.4 Wh kg- 1 at a power density of 250 W kg- 1 using 2 M KOH aqueous solution, and an ultrahigh energy density of 81.8 Wh kg-1 at a power density of 950 W kg- 1 is realized using Et4NBF4/AN electrolyte.
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