Chemical Industry and Engineering Progress ›› 2021, Vol. 40 ›› Issue (8): 4388-4396.DOI: 10.16085/j.issn.1000-6613.2019-1991

• Materials science and technology • Previous Articles     Next Articles

Preparation and electrochemical properties of B/N co-doped porous carbon nanosheets

MA Ailing1(), HUANG Guangxu2(), GENG Qianhao3, YAO Youheng2, LI Yuanyuan2, LIU Yingbin2   

  1. 1.Henan College of Industry & Information Technology, Jiaozuo 454000, Henan, China
    2.College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China
    3.School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
  • Received:2019-12-12 Online:2021-08-12 Published:2021-08-05
  • Contact: HUANG Guangxu

硼/氮共掺杂多孔碳纳米片的制备及其电化学性能

马爱玲1(), 黄光许2(), 耿乾浩3, 姚友恒2, 李媛媛2, 刘迎宾2   

  1. 1.河南工业和信息化职业学院,河南 焦作 454000
    2.河南理工大学化学化工学院,河南 焦作 454003
    3.上海大学环境与化学工程学院,上海 200444
  • 通讯作者: 黄光许
  • 作者简介:马爱玲(1971—),女,硕士,讲师,研究方向为矿物加工。E-mail:154785414@qq.com
  • 基金资助:
    国家自然科学基金(U1803114);河南省科技攻关项目(192102210302)

Abstract:

We report a facile method for preparing the B/N co-doped 2D porous carbon nanosheets (BNH-X) via annealing the mixtures of ammonium humate and H3BO3 at 700℃ (BNHC-700) and 800℃(BNHC-800), respectively. The BNH-X possess high contents of nitrogen (6.04% and 6.01%), boron (3.97% and 4.18%) and oxygen (17.01% and 16.87%), as well as developed pore structure with high mesopore ratio (36.15% and 40.84%). Expectedly, BNHC-700 and BNHC-800 showed large specific capacitances of 114F/g and 118F/g at 0.05A/g, respectively, and BNHC-800 demonstrated superior rate capability with a capacitance retention of 75.21% at 5A/g. Moreover, BNHC-700 and BNHC-800 exhibited excellent cycle performance with high capacitance retentions of 99.84% and 98.57% after 10000 cycles at 2.5A/g.

Key words: ammonium humate, orthoboric acid, B/N co-doped 2D porous carbon nanosheet, electrode material, electrochemistry, stability

摘要:

以煤系腐殖酸铵为前体,硼酸为多功能助剂,在700℃和800℃下一步炭化成功制备了B/N共掺杂多孔碳纳米片,并考察了其用作超级电容器电极材料的电化学性能。结果表明,该B/N共掺杂多孔碳纳米片具有发达的孔结构和较高的中孔率(36.15%和40.84%),富含氮(6.04%和6.01%)、硼(3.97%和4.18%)、氧(17.01%和16.87%)等杂原子,赋予相应电极材料较好的导电性、良好的润湿性和快速的离子扩散性能。BNHC-700和BNHC-800在0.05A/g电流密度下的比电容分别为114F/g和118F/g,后者还具有优异的倍率性能(5A/g下的比电容保持率高达75.21%)。BNHC-700和BNHC-800的循环稳定性良好,在2.5A/g电流密度下10000次恒流充放电后的比电容保持率分别高达99.84%和98.57%。

关键词: 腐殖酸铵, 硼酸, B/N共掺杂多孔碳纳米片, 电极材料, 电化学, 稳定性

CLC Number: 

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