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林产化学与工业 ›› 2021, Vol. 41 ›› Issue (6): 43-50.doi: 10.3969/j.issn.0253-2417.2021.06.006

• 研究报告 • 上一篇    下一篇

硼/氮共掺杂刀豆壳基多孔炭材料的制备及其电化学性能研究

罗路1, 罗凌聪1, 邓剑平1, 陈婷婷1, 范毜仔1,2, 杜官本3, 赵伟刚1,*()   

  1. 1. 福建农林大学 材料工程学院, 福建 福州 350018
    2. 英国布鲁内尔大学 土木工程学院, 伦敦 UB8 3PH, 英国
    3. 西南林业大学 材料科学与工程学院, 云南 昆明 650224
  • 收稿日期:2020-09-04 出版日期:2021-12-28 发布日期:2021-12-31
  • 通讯作者: 赵伟刚 E-mail:weigang-zhao@fafu.edu.cn
  • 作者简介:赵伟刚, 硕士生导师, 研究领域为生物质基复合材料与多孔炭材料; E-mail: weigang-zhao@fafu.edu.cn
    罗路(1992-), 男, 福建大田人, 博士生, 主要从事生物质能源与材料的研究工作
  • 基金资助:
    国家自然科学基金资助项目(31971593);福建省自然科学基金资助项目(高校联合资金)(2019J01386);福建农林大学科技创新专项基金项目(CXZX2019103)

Preparation of Boron and Nitrogen Co-doped Porous Carbon Derived from Sword Bean Shell and Its Electrochemical Performance

Lu LUO1, Lingcong LUO1, Jianping DENG1, Tingting CHEN1, Mizi FAN1,2, Guanben DU3, Weigang ZHAO1,*()   

  1. 1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350018, China
    2. College of Engineering, Design and Physical Sciences, Brunel University, London UB8 3PH, United Kingdom
    3. College of Material Science and Engineering, Southwest Forestry University, Kunming 650224, China
  • Received:2020-09-04 Online:2021-12-28 Published:2021-12-31
  • Contact: Weigang ZHAO E-mail:weigang-zhao@fafu.edu.cn

摘要:

以农林废弃物刀豆壳为原料,首先以低温炭化和KOH高温活化两步法制备高比表面积活性炭,进而以四水合五硼酸铵为硼源、氮源通过水热合成反应制备得到硼/氮共掺杂多孔炭材料。通过扫描电镜、透射电镜、氮气吸附-脱附、电感耦合等方法对材料的结构和化学特性进行表征,并采用三电极系统测试其电化学性能。研究结果表明:掺杂后的活性炭材料最大比表面积可达2 859 m2/g,总孔容1.34 cm3/g,微孔孔容0.99 cm3/g,最高硼质量分数为3.27%,氮质量分数为2.60%。基于杂原子的引入和适宜的孔隙结构的共同作用,掺杂后的活性炭材料在电流密度1 A/g条件下比电容最高达369 F/g,相应的20 A/g电流密度条件下的质量比电容为240 F/g,倍率性能优异。

关键词: 刀豆壳, 四水合五硼酸铵, 活性炭, 比表面积, 微孔孔容

Abstract:

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.

Key words: sword bean shell, ammonium pentaborate tetrahydrate, activated carbon, specific surface area, micropore volume

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