Zeolitic imidazolate framework derived ZnCo 2 O 4 hollow tubular nanofibers for long-life supercapacitors
Uniform one-dimensional metal oxide hollow tubular nanofibers (HTNs) have been controllably prepared using a calcination strategy using electrospun polymer nanofibers as soft templates and zeolitic imidazolate framework nanoparticles as precursors. Utilizing the general synthesis method, the ZnO HTN...
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Published in | RSC advances Vol. 10; no. 23; pp. 13922 - 13928 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
England
06.04.2020
|
Online Access | Get full text |
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Summary: | Uniform one-dimensional metal oxide hollow tubular nanofibers (HTNs) have been controllably prepared using a calcination strategy using electrospun polymer nanofibers as soft templates and zeolitic imidazolate framework nanoparticles as precursors. Utilizing the general synthesis method, the ZnO HTNs, Co
O
HTNs and ZnCo
O
HTNs have been successfully prepared. The optimal ZnCo
O
HTNs, as a representative substance applied in supercapacitors as the positive electrode, delivers a high specific capacity of 181 C g
at a current density of 0.5 A g
, an excellent rate performance of 75.14% and a superior capacity retention of 97.42% after 10 000 cycles. Furthermore, an asymmetric supercapacitor assembled from ZnCo
O
HTNs and active carbon also shows a stable and ultrahigh cycling stability with 95.38% of its original capacity after 20 000 cycle tests. |
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ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/D0RA01844A |