Constructing a high-performance quasi-solid-state asymmetric supercapacitor: NaxMnO2@CNT/WPU-PAAK-Na2SO4/AC-CNT

被引:18
作者
Wang, Jeng-An [1 ]
Ma, Chen-Chi M. [1 ]
Hu, Chi-Chang [1 ]
机构
[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30013, Taiwan
关键词
Asymmetric supercapacitor; Na+-pre-inserted MnO2; Gel polymer electrolyte; Quasi-solid-state; HIGH-ENERGY; ELECTROCHEMICAL CAPACITANCE; MNO2; ELECTROLYTES; CATHODE; INTERCALATION; NANOFLAKES; NANORODS;
D O I
10.1016/j.electacta.2019.135576
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
This study constructs a flexible, high-performance, quasi-solid-state, asymmetric supercapacitor (ASC) consisting of a positive electrode of Na+-pre-inserted MnO2 deposited-carbon nanotubes (NaxMnO2@CNT), potassium poly(acrylate) cross-linked water-born polyurethane (WPU-PAAK) gel polymer electrolyte soaked with 1 M Na2SO4, and activated carbon-CNT (AC-CNT) composite (NaxMnO2@CNT/ WPU-PAAK-Na2SO4/AC-CNT). The pre-insertion of Na+ enhances the utilization of delta-phase MnO2 and the usage of carbon nanotubes (CNTs) is beneficial to promote the electronic conductivity, achieving the optimal performance of NaxMnO2@CNT with high specific capacitance of 230 and 130 F g(-1) at 1 and 20 A g(-1) in the designed gel polymer electrolyte, WPU-PAAK-Na2SO4. The specific capacitance of the ACCNT composite is also optimized to achieve the high specific capacitance of 180 and 127 F g(-1) at 1 and 20 A g(-1) in the same gel electrolyte. This quasi-solid-state ASC with a high cell voltage of 1.8 V can deliver a high cell capacitance, large specific energy, and good specific power of 36.8 F g(-1), 16.38 Wh kg(-1) and 1.04 kW kg(-1), respectively, at 1 A g(-1). This ASC also provides an outstanding area-based cell capacitance, areal energy density and areal power density of 254.4 mF cm(-2) , 111.92 mu Wh cm(-2) and 10.35 mW cm(-2), respectively. This highly flexible ASC with 93.4% cell capacitance retention at a bending angle of 180 degrees exhibits an excellent cycle life (97% capacitance retention in a 10,000-cycle test). (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页数:10
相关论文
共 52 条
  • [1] [Anonymous], 2002, Student Solutions Manual to accompany Electrochemical Methods: Fundamentals and Applicaitons
  • [2] Flexible Zn2SnO4/MnO2 Core/Shell Nanocable-Carbon Microfiber Hybrid Composites for High-Performance Supercapacitor Electrodes
    Bao, Lihong
    Zang, Jianfeng
    Li, Xiaodong
    [J]. NANO LETTERS, 2011, 11 (03) : 1215 - 1220
  • [3] Long-term cycling behavior of asymmetric activated carbon/MnO2 aqueous electrochemical supercapacitor
    Brousse, Thierry
    Taberna, Pierre-Louis
    Crosnier, Olivier
    Dugas, Romain
    Guillemet, Philippe
    Scudeller, Yves
    Zhou, Yingke
    Favier, Frederic
    Belanger, Daniel
    Simon, Patrice
    [J]. JOURNAL OF POWER SOURCES, 2007, 173 (01) : 633 - 641
  • [4] Characterization of bi-material electrodes for electrochemical hybrid energy storage devices
    Cericola, D.
    Ruch, P. W.
    Koetz, R.
    Novak, P.
    Wokaun, A.
    [J]. ELECTROCHEMISTRY COMMUNICATIONS, 2010, 12 (06) : 812 - 815
  • [5] Microwave-assisted hydrothermal synthesis of crystalline WO3-WO3 0 5H2O mixtures for pseudocapacitors of the asymmetric type
    Chang, Kuo-Hsiri
    Hu, Chi-Chang
    Huang, Chao-Ming
    Liu, Ya-Ling
    Chang, Chih-I
    [J]. JOURNAL OF POWER SOURCES, 2011, 196 (04) : 2387 - 2392
  • [6] Preparation and Characterization of Flexible Asymmetric Supercapacitors Based on Transition-Metal-Oxide Nanowire/Single-Walled Carbon Nanotube Hybrid Thin-Film Electrodes
    Chen, Po-Chiang
    Shen, Guozhen
    Shi, Yi
    Chen, Haitian
    Zhou, Chongwu
    [J]. ACS NANO, 2010, 4 (08) : 4403 - 4411
  • [7] Hydrogel-polymer electrolytes for electrochemical capacitors: an overview
    Choudhury, N. A.
    Sampath, S.
    Shukla, A. K.
    [J]. ENERGY & ENVIRONMENTAL SCIENCE, 2009, 2 (01) : 55 - 67
  • [8] Effect of crystallographic structure of MnO2 on its electrochemical capacitance properties
    Devaraj, S.
    Munichandraiah, N.
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (11) : 4406 - 4417
  • [9] Modification of multi-walled carbon nanotubes for electric double-layer capacitors: Tube opening and surface functionalization
    Hu, Chi-Chang
    Su, Jen-Hong
    Wen, Ten-Chin
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2007, 68 (12) : 2353 - 2362
  • [10] The possible use of polymer gel electrolytes in nickel/metal hydride battery
    Iwakura, C
    Nohara, S
    Furukawa, N
    Inoue, H
    [J]. SOLID STATE IONICS, 2002, 148 (3-4) : 487 - 492