%A Lu LUO, Lingcong LUO, Jianping DENG, Tingting CHEN, Mizi FAN, Guanben DU, Weigang ZHAO %T Preparation of Boron and Nitrogen Co-doped Porous Carbon Derived from Sword Bean Shell and Its Electrochemical Performance %0 Journal Article %D 2021 %J Chemistry and Industry of Forest Products %R 10.3969/j.issn.0253-2417.2021.06.006 %P 43-50 %V 41 %N 6 %U {http://www.cifp.ac.cn/CN/abstract/article_2830.shtml} %8 2021-12-28 %X

The high surface area activated carbon was produced firstly by a simple two-step process of carbonization and KOH activation using forestry and agricultural residues sword bean shells as precursor. Furthermore, the N and B co-doped hierarchical porous carbon was prepared by hydrothermal post-treatment process using ammonium pentaborate tetrahydrate(NH4B5O8·4H2O) as nitrogen and boron source. The scanning electron microscopy, transmission electron microscopy, nitrogen adsorption/desorption isotherm and inductive coupled plasma emission spectrometer were used to investigate the morphological, structural and chemical properties. Meanwhile, the electrochemical performance was tested by a three-electrode system. The results showed that the maximum specific surface area, total pore volume, and micropore volume of the doped activated carbons could reach 2 859 m2/g, 1.34 cm3/g, and 0.99 cm3/g, respectively. The boron and nitrogen contents were 3.27% and 2.60%. The B and N co-doped activated carbon materials possessed excellent rate performance. Due to the synergistic effect of heteroatoms doping and also appropriate texture properties, the maximum specific capacitances were 369 and 240 F/g at the current density of 1 and 20 A/g, respectively.