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过程工程学报 ›› 2016, Vol. 16 ›› Issue (2): 346-350.DOI: 10.12034/j.issn.1009-606X.215383CSTR: 32067.14.jproeng.215383

• 材料工程专栏 • 上一篇    下一篇

液相剥离石墨烯的制备及其电化学性能

郑璐 晋日亚 孙友谊 马骏1   

  1. 中北大学化工与环境学院 中北大学化工与环境学院 中北大学化工与环境学院 中北大学化工与环境学院
  • 收稿日期:2015-11-11 修回日期:2015-12-22 出版日期:2016-04-20 发布日期:2016-12-22
  • 通讯作者: 晋日亚

Preparation and Electrochemical Performance of Graphene Prepared by Liquid-phase Exfoliation

ZHENG Lu JIN Ri-ya SUN You-yi MA Jun   

  1. College of Chemical and Environmental Engineering, North University of China College of Chemical and Environmental Engineering, North University of China College of Chemical and Environmental Engineering, North University of China College of Chemical and Environmental Engineering, North University of China
  • Received:2015-11-11 Revised:2015-12-22 Online:2016-04-20 Published:2016-12-22
  • Contact: JIN Ri-ya

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被引次数

3

摘要： 在有机溶剂中超声剥离膨胀石墨制备单层和多层石墨烯，对其微观形貌和结构进行表征，采用四探针表征方法考察了溶剂、时间和还原剂对石墨烯电导率的影响，优化了制备工艺参数，分析了石墨烯的性能. 结果表明，以丙酮为分散剂时石墨烯导电率最高，可达219.09 S/cm，石墨烯具有良好的电化学性能，比电容达18.8 F/g，在pH=7的磷酸盐缓冲溶液中，在0.1 V电压下对Pb2+有灵敏的溶出峰，检出限位达0.05 mmol/L.

关键词: 石墨烯, 液相剥离, 导电率, 电化学性能

Abstract: Single- and multi-layer graphene was fabricated from expanded graphite by liquid-phase exfoliation method in organic solvents. Its morphology and structure were characterized. The effects of organic solvent, time and reductant on the electrical properties of graphene platelets were studied by four-point probe characterization method, and the preparation conditions of graphene optimized. The results show that graphene platelets have high electrical conductivity by using acetone as the dispersant, which can achieve 219.09 S/cm. The graphene exhibits good electrochemical performance compared with the expanded graphite, its specific capacitance reaches 18.8 F/g. In PBS buffer solution of pH=7, a sensitive stripping peak at 0.1 V to Pb2+ ion occurs, and the detection limit is 0.05 mmol/L.

Key words: graphene, liquid-phase exfoliation, electrical conductivity, electrochemical performance

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