Influence of Different Activators on the Structure and Properties of Activated Carbon Based on Bamboo Fiber

In order to explore the influence of different activators on the structure and properties of the prepared activated carbon, bamboo fiber-based activated carbons (BFACs) were prepared by four activators of phosphoric acid, pyrophosphoric acid, zinc chloride, and diammonium biphosphate (BFAC-H(3)PO(4), BFAC-H(4)P(2)O(7), BFAC-ZnCl(2), and BFAC-(NH(4))(2)HPO(4)) and BFACs adsorption performance and electrochemical properties were investigated. The main conclusions were: the specific surface area of the four BFACs varies greatly, among which BFAC-ZnCl(2) was the highest, at 1908.5074 m(2)/g, and BFAC-(NH(4))(2)HPO(4) was the lowest, at 641.5941 m(2)/g. In terms of the pore structure, BFAC-H(3)PO(4) and BFAC-H(4)P(2)O(7) are mainly mesopores and BFAC-ZnCl(2) and BFAC-(NH(4))(2)HPO(4) are mainly micropores. The BFAC-ZnCl(2) sample had the largest specific capacitance, with a specific capacitance of 121.2730 F/g at a current density of 0.2 A/g, with a small internal resistance and good electrochemical reversibility and capacitance performance. The adsorption properties were better for BFAC-ZnCl(2) and BFAC-H(3)PO(4) and the adsorption amounts were 648.75 and 548.75 mg/g, respectively.