高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (9): 2010.doi: 10.7503/cjcu20180158

• 物理化学 • 上一篇    下一篇

鳞状CoMn2O4/石墨烯复合材料的制备及在超级电容器中的应用

李龙1, 胡红利1(), 丁书江2   

  1. 1. 西安交通大学电力设备电气绝缘国家重点实验室, 2. 西安交通大学理学院, 西安 710049
  • 收稿日期:2018-02-28 出版日期:2018-09-07 发布日期:2018-05-12
  • 作者简介:

    联系人简介: 胡红利, 男, 博士, 教授, 主要从事储能材料及器件研究. E-mail: hlhu@mail.xjtu.edu.cn

  • 基金资助:
    国家自然科学基金(批准号: 51777151)和中国西电集团-西安交通大学电气技术研究院研究基金(批准号: XDRD16001)资助.

Facile Synthesis of Scale-like CoMn2O4 Nanosheets on Reduced Graphene Oxide for Supercapacitors

LI Long1, HU Hongli1,*(), DING Shujiang2   

  1. 1. State Key Laboratory of Electrical Insulation and Power Equipment, 2. School of Science, Xi’an Jiaotong University, Xi’an 710049, China
  • Received:2018-02-28 Online:2018-09-07 Published:2018-05-12
  • Contact: HU Hongli E-mail:hlhu@mail.xjtu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No. 51777151) and the Research Fund of China XD Group-Xi’an Jiaotong University Electrical Technology Research Institute(No.XDRD16001).

摘要:

通过简单的共沉淀反应和热处理过程在还原氧化石墨烯(rGO)表面生长鳞状锰酸钴(CoMn2O4)纳米片, 得到了CoMn2O4/rGO复合材料. 通过场发射扫描电子显微镜(FESEM)、 透射电子显微镜(TEM)、 X射线衍射(XRD)以及X射线光电子能谱(XPS)对样品的结构和组成进行了表征. 电化学性能测试结果表明, CoMn2O4/rGO具有较好的储能性能和优良的循环稳定性. 当电流密度为2 A/g时, CoMn2O4/rGO的比电容可达1000.8 F/g. 经过1000周充放电循环后比电容保持率为93.6%.

关键词: 鳞状结构, 锰酸钴纳米片, 还原氧化石墨烯, 超级电容器, 电极材料

Abstract:

Scale-like CoMn2O4 nanosheets anchoring on reduced graphene oxide(CoMn2O4/rGO) were fabricated via a facile co-precipitation and thermal process. The resulting product of CoMn2O4/rGO was characterized by field emission scanning electron microscopy(FESEM), transmission electron microscopy(TEM), X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). When evaluated its potential as electrode material in supercapacitors, CoMn2O4/rGO nanocomposites exhibit enhanced energy storage performance with high specific capacitance(1000.8 F/g at 2 A/g) and excellent cycle stability(93.6% capacitance retention after 1000 cycles).

Key words: Scale-like structure, CoMn2O4 nanosheets, Reduced graphene oxide, Supercapacitor, Electrode material

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