Interconnected Carbon Nanosheets Derived from Hemp for Ultrafast Supercapacitors with High Energy

被引:856
|
作者
Wang, Huanlei [1 ,2 ]
Xu, Zhanwei [1 ,2 ]
Kohandehghan, Alireza [1 ,2 ]
Li, Zhi [1 ,2 ]
Cui, Kai [2 ]
Tan, Xuehai [1 ,2 ]
Stephenson, Tyler James [1 ,2 ]
King'ondu, Cecil K. [1 ,2 ]
Holt, Chris M. B. [1 ,2 ]
Olsen, Brian C. [1 ,2 ]
Tak, Jin Kwon [3 ]
Harfield, Don [3 ]
Anyia, Anthony O. [3 ]
Mitlin, David [1 ,2 ]
机构
[1] Univ Alberta, Edmonton, AB T6G 2V4, Canada
[2] Natl Res Council Canada, Natl Inst Nanotechnol NINT, Edmonton, AB T6G 2M9, Canada
[3] Alberta Innovates Technol Futures, Bioresource Technol, Vegreville, AB T9C 1T4, Canada
关键词
biomass; carbon nanosheets; ionic liquid; supercapacitor; energy storage; DOUBLE-LAYER CAPACITORS; IONIC LIQUID ELECTROLYTE; HIGH-PERFORMANCE; ELECTROCHEMICAL CAPACITORS; ACTIVATED CARBONS; MESOPOROUS CARBON; HIGH-TEMPERATURE; PORE-SIZE; GRAPHENE; STORAGE;
D O I
10.1021/nn400731g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We created unique interconnected partially graphitic carbon nanosheets (10-30 nm in thickness) with high specific surface area (up to 2287 m(2) g(-1)), significant volume fraction of mesoporosity (up to 58%), and good electrical conductivity (211-226 S m(-1)) from hemp bast fiber. The nanosheets are ideally suited for low (down to 0 degrees C) through high (100 degrees C) temperature ionic-liquid-based supercapacitor applications: At 0 degrees C and a current density of 10 A g(-1), the electrode maintains a remarkable capacitance of 106 F g(-1). At 20, 60, and 100 degrees C and an extreme current density of 100 A g(-1), there is excellent capacitance retention (72-92%) with the specific capacitances being 113, 144, and 142 F g(-1), respectively. These characteristics favorably place the materials on a Ragone chart providing among the best power-energy characteristics (on an active mass normalized basis) ever reported for an electrochemical capacitor: At a very high power density of 20 kW kg(-1) and 20, 60, and 100 degrees C, the energy densities are 19, 34, and 40 Wh kg(-1), respectively. Moreover the assembled supercapacitor device yields a maximum energy density of 12 Wh kg(-1), which is higher than that of commercially available supercapacitors. By taking advantage of the complex multilayered structure of a hemp bast fiber precursor, such exquisite carbons were able to be achieved by simple hydrothermal carbonization combined with activation. This novel precursor-synthesis route presents a great potential for facile large-scale production of high-performance carbons for a variety of diverse applications including energy storage.
引用
收藏
页码:5131 / 5141
页数:11
相关论文
共 50 条
  • [1] Interconnected carbon nanosheets derived from hemp for ultrafast supercapacitors with high energy
    Mitlin, David
    Wang, Huanlei
    Li, Zhi
    [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2014, 247
  • [2] Interconnected carbon nanosheets derived from hemp for ultrafast supercapacitors with high energy
    Mitlin, David
    [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2014, 248
  • [3] High energy supercapacitors based on interconnected porous carbon nanosheets with ionic liquid electrolyte
    Zhou, Dong
    Wang, Huanlei
    Mao, Nan
    Chen, Yanran
    Zhou, Ying
    Yin, Taiping
    Xie, Hui
    Liu, Wei
    Chen, Shougang
    Wang, Xin
    [J]. MICROPOROUS AND MESOPOROUS MATERIALS, 2017, 241 : 202 - 209
  • [4] Tunable porous structure of carbon nanosheets derived from puffed rice for high energy density supercapacitors
    Jiangsu Key Laboratory of Environmental Material and Engineering, School of Environmental Science and Engineering, Yangzhou University, Yangzhou
    225000, China
    不详
    225000, China
    不详
    不详
    不详
    30167, Germany
    [J]. J Power Sources, (148-155):
  • [5] N, P codoped carbon nanosheets derived from rice husk for supercapacitors with high energy density
    Wei, Feng
    Guo, Yuchen
    Wang, Shichao
    Gao, Yaojie
    Qiao, Jun
    Ran, Songlin
    Han, Mengcheng
    [J]. DIAMOND AND RELATED MATERIALS, 2023, 137
  • [6] Tunable porous structure of carbon nanosheets derived from puffed rice for high energy density supercapacitors
    Hou, Jianhua
    Jiang, Kun
    Tahir, Muhammad
    Wu, Xiaoge
    Idrees, Faryal
    Shen, Ming
    Cao, Chuanbao
    [J]. JOURNAL OF POWER SOURCES, 2017, 371 : 148 - 155
  • [7] Nitrogen-doped interconnected carbon nanosheets from pomelo mesocarps for high performance supercapacitors
    Peng, Hui
    Ma, Guofu
    Sun, Kanjun
    Zhang, Zhiguo
    Yang, Qian
    Lei, Ziqiang
    [J]. ELECTROCHIMICA ACTA, 2016, 190 : 862 - 871
  • [8] Interconnected open-channel carbon nanosheets derived from pineapple leaf fiber as a sustainable active material for supercapacitors
    Sodtipinta, Jedsada
    Ieosakulrat, Chanoknan
    Poonyayant, Natchapol
    Kidkhunthod, Pinit
    Chanlek, Narong
    Amornsakchai, Taweechai
    Pakawatpanurut, Pasit
    [J]. INDUSTRIAL CROPS AND PRODUCTS, 2017, 104 : 13 - 20
  • [9] Lignin-derived carbon nanosheets for high-capacitance supercapacitors
    Liu, Wanshuang
    Yao, Yimin
    Fu, Ouli
    Jiang, Sihan
    Fang, Yucheng
    Wei, Yi
    Lu, Xuehong
    [J]. RSC ADVANCES, 2017, 7 (77): : 48537 - 48543
  • [10] Interconnected Phosphorus and Nitrogen Codoped Porous Exfoliated Carbon Nanosheets for High-Rate Supercapacitors
    Jin, Jutao
    Qiao, Xiaochang
    Zhou, Feng
    Wu, Zhong-Shuai
    Cui, Lifeng
    Fan, Hongbo
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (20) : 17318 - 17326