TY - JOUR
T1 - Design of ZIF-based CNTs wrapped porous carbon with hierarchical pores as electrode materials for supercapacitors
AU - Yang, Lvye
AU - Feng, Yi
AU - Yu, Dongbo
AU - Qiu, Jianhao
AU - Zhang, Xiong Fei
AU - Dong, Dehua
AU - Yao, Jianfeng
N1 - Funding Information:
The authors are grateful for the financial support of National Key R&D Program of China ( 2017YFD0601006 ), Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) , the Youth Fund of Natural Science Foundation of Jiangsu Province ( BK20170919 ) and Scientific Research Foundation for Returned Scholars from Nanjing Forestry University ( GXL2018014 ).
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/2
Y1 - 2019/2
N2 - ZIF-8 wrapped two-dimensional ZIF-L(Co) was prepared. By adjusting the Zn2+ concentration in precursor, ZIF-8 layer with different thickness was coated onto sheet-like ZIF-L. After carbonization, hierarchical porous carbon with CNTs wrapping was formed. Proper ZIF-8 coating would result in the porous carbon with relative high BET surface area, N content, electrical conductivity and proper pore size distribution; thus showing higher supercapacitive performance than that of carbonized ZIF-8 or carbonized ZIF-L. The highest specific capacitance is 274 F/g for carbonized composite materials compared to that of 220 F/g for carbonized ZIF-8 and 57 F/g for carbonized ZIF-L. Moreover, such composite sample (CZ-6) showed high stability and the energy density reached 6.99 W h/kg at a power density of 0.262 kW/k, which is better than most of other ZIF-based porous carbon reported before.
AB - ZIF-8 wrapped two-dimensional ZIF-L(Co) was prepared. By adjusting the Zn2+ concentration in precursor, ZIF-8 layer with different thickness was coated onto sheet-like ZIF-L. After carbonization, hierarchical porous carbon with CNTs wrapping was formed. Proper ZIF-8 coating would result in the porous carbon with relative high BET surface area, N content, electrical conductivity and proper pore size distribution; thus showing higher supercapacitive performance than that of carbonized ZIF-8 or carbonized ZIF-L. The highest specific capacitance is 274 F/g for carbonized composite materials compared to that of 220 F/g for carbonized ZIF-8 and 57 F/g for carbonized ZIF-L. Moreover, such composite sample (CZ-6) showed high stability and the energy density reached 6.99 W h/kg at a power density of 0.262 kW/k, which is better than most of other ZIF-based porous carbon reported before.
KW - Hierarchical structure
KW - Metal-organic framework
KW - N-doping
KW - Nanoporous carbon
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=85054739326&partnerID=8YFLogxK
U2 - 10.1016/j.jpcs.2018.10.012
DO - 10.1016/j.jpcs.2018.10.012
M3 - Article
AN - SCOPUS:85054739326
SN - 0022-3697
VL - 125
SP - 57
EP - 63
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
ER -