高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (8): 1485-1490.doi: 10.7503/cjcu20160234

• 物理化学 • 上一篇    下一篇

Ni3(HCOO)6/还原氧化石墨烯复合电极材料的制备及电容性能

付蓉蓉, 罗民(), 马永华, 杨顺   

  1. 宁夏大学化学化工学院, 能源化工国家重点实验室培育基地, 银川 750021
  • 收稿日期:2016-04-13 出版日期:2016-07-19 发布日期:2016-07-19
  • 作者简介:

    联系人简介: 罗民, 男, 博士, 教授, 主要从事多孔功能材料的制备和电化学性能研究. E-mail: martinluomin@163.com

  • 基金资助:
    国家自然科学基金(批准号: 21561026, 21361020)资助

Preparation and Supercapacitance of Ni3(HCOO)6/Reduced Graphene Oxide Electrode Materials

FU Rongrong, LUO Min*(), MA Yonghua, YANG Shun   

  1. School of Chemistry and Chemical Engineering, State Key Laboratory of Energy Resources and Chemical Engineering Cultivation Base, Ningxia University, Yinchuan 750021, China
  • Received:2016-04-13 Online:2016-07-19 Published:2016-07-19
  • Contact: LUO Min E-mail:martinluomin@163.com
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21561026, 21361020)

摘要:

以氧化石墨烯(GO)为前驱体, Ni(NO3)2·6H2O为镍源, 甲酸为配体, N,N-二甲基甲酰胺为溶剂, 通过一步溶剂热法制备了Ni3(HCOO)6/rGO复合电极材料. 研究结果表明, 通过金属镍离子和配体在氧化石墨烯表面超分子自组装成核, 形成了“三明治”式的夹心复合结构; 不同的GO浓度对复合材料的物相结构、 晶体尺寸大小、 形貌及电化学性能有很大的影响; 当GO的浓度为8 mg/mL时, 在100 ℃下反应24 h得到的Ni3(HCOO)6/rGO复合材料在电解液为1 mol/L KOH, 5 mV/s下比电容高达940 F/g, 经过500次充放电循环后电容的保持率为96.28%.

关键词: Ni3(HCOO)6/还原氧化石墨烯复合材料, 超级电容器, 超分子自组装, 溶剂热法

Abstract:

Ni3(HCOO)6/rGO electrode materials with sandwich structure were obtained via a facile synergistic self-assembly solvothermal route. As a electrode material for supercapacitor, the composites exhibited large specific capacitance and good cycling stability. The rGO loading is important factors in determining the phase, morphology and electrochemical property of as-prepared Ni3(HCOO)6/rGO composites. The optimum conditions were achieved as follows: the synthesis temperature of 100 ℃, reaction time of 24 h and 8 mg/mL of graphene oxide addition. Ni3(HCOO)6/rGO composite delivered a large specific capacitance of 940 F/g at a scan rate of 5 mV/s in 1 mol/L KOH electrolyte. Also, it displayed good electrochemical stability with 96.28% of the initial capacitance over consecutive 500 cycles at 4 A/g.

Key words: Ni3(HCOO)6/rGO composite, Supercapacitor, Supramolecular self-assembly, Solvothermal method

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