A general conversion of polyacrylate-metal complexes into porous carbons especially evinced in the case of magnesium polyacrylate

作者：Chen, Xiang Ying^*; Chen, Chong; Zhang, Zhong Jie; Xie, Dong Hua; Liu, Jian Wei

来源：Journal of Materials Chemistry A, 2013, 1(12): 4017-4025.

DOI：10.1039/c3ta01330h

• Capacitance retention
• Capacitive performance
• Carbonization temperatures
• Direct carbonizations
• High specific capacitances
• Supercapacitor electrodes
• Surface functionalities
• Synthetic strategies

As a generalized synthetic protocol, porous carbons have been for the first time prepared by a direct carbonization of polyacrylate-metal complexes. The case of magnesium polyacrylate was emphatically studied. It reveals that the carbonization temperature can play a crucial role in the determination of surface areas, pore structures, surface functionalities of porous carbons as well as the correlative capacitive performances. The carbon-Mg-900 sample exhibits a high surface area of 942 m(2) g(-1) and a large total pore volume of 1.90 cm(3) g(-1), with a high specific capacitance of 262.4 F g(-1) at 0.5 A g(-1) in 6.0 mol L-1 aqueous KOH electrolyte. Moreover, it displays high capacitance retention even of 33.5% at 100 A g(-1), and long-term cycling ability (similar to 91.3% retention after 5000 cycles). More importantly, the present synthetic strategy can be extended to prepare other polyacrylate-metal complexes, such as calcium polyacrylate and aluminum polyacrylate. The carbon-Al-900 sample can exhibit a high surface area of 1556 m(2) g(-1) and a large total pore volume of 0.97 cm(3) g(-1). To sum up, the carbon samples derived from magnesium polyacrylate possess the highest capacitive performances as supercapacitor electrode materials.

• 出版日期2013
• 单位安徽大学; 合肥工业大学