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Bisphenol A Epoxy Resin-Derived Activated Carbon with High Performance for Supercapacitors
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-09-13 , DOI: 10.1021/acs.jpcc.3c03756 Chunhua Zhao 1 , Shi Chen 1 , Nan Sun 1 , Wenbin Jiang 1 , Wenlei Cai 1 , Chongjun Zhao 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-09-13 , DOI: 10.1021/acs.jpcc.3c03756 Chunhua Zhao 1 , Shi Chen 1 , Nan Sun 1 , Wenbin Jiang 1 , Wenlei Cai 1 , Chongjun Zhao 1
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Supercapacitors are important energy storage devices with the advantages of high power density and long cycle life, while their performance is highly dependent on the active materials. Exploitation of the carbon source and the synthesis method play a key role in supplying activated carbon (AC) for the electric double-layer capacitor (EDLC). Herein, Bisphenol A epoxy resin is used as the carbon source of activated carbon, and the air atmosphere during the carbonization process is used to improve the specific surface area of the resultant activated carbon (1731.18 m2 g–1 in air vs 1353.78 m2 g–1 in N2). Consequently, this activated carbon generated from bisphenol A epoxy resin in air had abundant micropores and mesopores and displayed good electrochemical performance: This porous carbon electrode has a specific capacitance of 422.9 F g–1 at 1 A g–1 (vs 285.1 F g–1 in N2). Its symmetric supercapacitor in 6 M KOH electrolyte has an energy density of 13.6 Wh kg–1 even at a power density of 1500 W kg–1, and a specific capacitance retention of 99.61% after 20 000 cycles.
中文翻译：
用于超级电容器的高性能双酚A环氧树脂活性炭
超级电容器是重要的储能器件，具有功率密度高、循环寿命长等优点，但其性能高度依赖于活性材料。碳源的开发和合成方法在为双电层电容器（EDLC）提供活性炭（AC）方面发挥着关键作用。本文采用双酚A环氧树脂作为活性炭的碳源，并利用炭化过程中的空气气氛来提高所得活性炭的比表面积（空气中1731.18 m 2 g –1 vs 1353.78 m 2 N 2中的g –1）。因此，这种由双酚A环氧树脂在空气中生成的活性炭具有丰富的微孔和介孔，并表现出良好的电化学性能：这种多孔碳电极在1 A g –1时的比电容为422.9 F g –1（vs 285.1 F g –1）。 1于 N 2 )。其采用6 M KOH电解液的对称超级电容器即使在功率密度为1500 W kg –1 时能量密度仍为13.6 Wh kg –1 ， 20 000次循环后比电容保持率为99.61%。
更新日期：2023-09-13
中文翻译：
用于超级电容器的高性能双酚A环氧树脂活性炭
超级电容器是重要的储能器件，具有功率密度高、循环寿命长等优点，但其性能高度依赖于活性材料。碳源的开发和合成方法在为双电层电容器（EDLC）提供活性炭（AC）方面发挥着关键作用。本文采用双酚A环氧树脂作为活性炭的碳源，并利用炭化过程中的空气气氛来提高所得活性炭的比表面积（空气中1731.18 m 2 g –1 vs 1353.78 m 2 N 2中的g –1）。因此，这种由双酚A环氧树脂在空气中生成的活性炭具有丰富的微孔和介孔，并表现出良好的电化学性能：这种多孔碳电极在1 A g –1时的比电容为422.9 F g –1（vs 285.1 F g –1）。 1于 N 2 )。其采用6 M KOH电解液的对称超级电容器即使在功率密度为1500 W kg –1 时能量密度仍为13.6 Wh kg –1 ， 20 000次循环后比电容保持率为99.61%。
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