Facile dip coating processed 3D MnO2-graphene nanosheets/MWNT-Ni foam composites for electrochemical supercapacitors

被引:39
|
作者
Kong, Shuying [1 ]
Cheng, Kui [1 ]
Ouyang, Tian [1 ]
Gao, Yinyi [1 ]
Ye, Ke [1 ]
Wang, Guiling [1 ]
Cao, Dianxue [1 ]
机构
[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Peoples R China
基金
黑龙江省自然科学基金; 中国博士后科学基金;
关键词
Manganese dioxide; Graphene nanosheets; Multi-walled carbon nanotube; Dip; 82; Dry; Supercapacitor; HIGH-PERFORMANCE; HIGH-ENERGY; ASYMMETRIC SUPERCAPACITOR; HYBRID SUPERCAPACITOR; NANOSTRUCTURED CARBON; NANOTUBE COMPOSITES; GRAPHENE HYDROGEL; OXIDE COMPOSITE; ARRAYS; MICROSPHERES;
D O I
10.1016/j.electacta.2016.12.158
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Carbon materials, especially graphene nanosheets (GNS) and/or multi-walled carbon nanotube (MWNT), have been widely used as electrode materials for supercapacitor due to their advantages of higher specific surface area and electronic conductivity, but the relatively low specific capacitance thus results in low energy density hindering their large applications. On the contrary, MnO2 exhibits higher energy density but poor electrical conductivity. In order to obtain high performance supercapacitor electrode, here, combining the advantages of these materials, we have designed a facile two-step strategy to prepare 3D MnO2-GNS-MWNT-Ni foam (MnO2-GM-Ni) electrode. First, GNS and MWNT is wrapped on the surface of Ni foam (GM-Ni) Via a "dip & dry" method by using an organic dye as a co-dispersant. Then, by using this 3D GM-Ni as subStrate, MnO2 nanoflakes are in-situ supporting on the surface of GNS and MWNT through a hydrothermal reaction. The specific capacitances of MnO2-GM-Ni electrode reach as high as 470.5 F g(-1) at 1 Ag-1. Furthermore, we have successfully fabricated an asymmetric supercapacitor with MnO2-GM-Ni and GM-Ni as the positive and negative electrodes, respectively. The MnO2-GM-Ni//GM-Ni asymmetric supercapacitor exhibits a maximum energy density of 353 Wh kg(-1), at a power density of 426 W kg(-1) and also a favorable cycling performance that 83.8% capacitance retention after 5000 cycles. These results show manageable and high-performance which offer promising future for practical applications. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:29 / 39
页数:11
相关论文
共 50 条
  • [21] Synchronous exfoliation and assembly of graphene on 3D Ni(OH)2 for supercapacitors
    Ma, Liguo
    Zheng, Maojun
    Liu, Shaohua
    Li, Qiang
    You, Yuxiu
    Wang, Faze
    Ma, Li
    Shen, Wenzhong
    CHEMICAL COMMUNICATIONS, 2016, 52 (91) : 13373 - 13376
  • [22] MnO2 Nanoflowers and Reduced Graphene Oxide 3D Composites for Ultrahigh-Energy-Density Asymmetric Supercapacitors
    Zhang, Junying
    Zhang, Xiaoming
    Liu, Zhi
    Zheng, Jun
    Zuo, Yuhua
    Xue, Chunlai
    Li, Chuanbo
    Cheng, Buwen
    Wang, Qiming
    ENERGY TECHNOLOGY, 2018, 6 (04) : 737 - 743
  • [23] Facile synthesis of heterogeneous Co3O4-nanowires/vertical-graphene-nanosheets on Ni foam for high performance supercapacitors
    Ouyang, Kang
    Guo, Guanlun
    Liu, Yihui
    Sun, Lin
    Wei, Mingrui
    MATERIALS LETTERS, 2019, 251 : 176 - 179
  • [24] The 3D Co3O4/graphene/nickel foam electrode with enhanced electrochemical performance for supercapacitors
    Van Hoa Nguyen
    Shim, Jae-Jin
    MATERIALS LETTERS, 2015, 139 : 377 - 381
  • [25] MnO2 nanoflowers and polyaniline nanoribbons grown on hybrid graphene/Ni 3D scaffolds by in situ electrochemical techniques for high-performance asymmetric supercapacitors
    Wu, Liqiong
    Hao, Lihua
    Pang, Bowen
    Wang, Guofeng
    Zhang, Yin
    Li, Xinheng
    JOURNAL OF MATERIALS CHEMISTRY A, 2017, 5 (09) : 4629 - 4637
  • [26] 3D interconnected Fe-Co-S nanosheets network directly grown on graphene coated nickel foam with enhanced electrochemical performance for asymmetric supercapacitors
    Xiao, Ting
    Che, Pengcheng
    Xiao, Rui
    Xiang, Peng
    Jiang, Lihua
    Tao, Fujun
    Tan, Xinyu
    Chen, Xiaobo
    APPLIED SURFACE SCIENCE, 2021, 543
  • [27] Facile fabrication and perfect cycle stability of 3D NiO@CoMoO4 nanocomposite on Ni foam for supercapacitors
    Ma, Xue-Jing
    Kong, Ling-Bin
    Zhang, Wei-Bin
    Liu, Mao-Cheng
    Luo, Yong-Chun
    Kang, Long
    RSC ADVANCES, 2014, 4 (34): : 17884 - 17890
  • [28] A facile synthesis of hierarchical α-MnO2 nanofibers on 3D-graphene foam for supercapacitor application
    Patil, Umakant M.
    Sohn, Ji Soo
    Kulkarni, Sachin B.
    Park, Hyung Goo
    Jung, Youngmo
    Gurav, Kishor V.
    Kim, Jae Hun
    Jun, Seong Chan
    MATERIALS LETTERS, 2014, 119 : 135 - 139
  • [29] 3D Hierarchical structure Electrodes of MnO2 Nanosheets Decorated on Needle-like NiCo2O4 Nanocones on Ni Foam as a cathode material for Asymmetric Supercapacitors
    Ren, Bo
    Fan, Meiqing
    Yang, Xiaodong
    Wang, Lei
    Yu, Haixia
    CHEMISTRYSELECT, 2019, 4 (19): : 5641 - 5650
  • [30] Facile fabrication of binder-free reduced graphene oxide/MnO2/Ni foam hybrid electrode for high-performance supercapacitors
    Zhao, Zhiyong
    Shen, Ting
    Liu, Zhihua
    Zhong, Qishi
    Qin, Yujun
    JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 812