Journal
POLYHEDRON
Volume 109, Issue -, Pages 26-32Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2016.01.046
Keywords
NMOFs; Precursor; Co3O4; Pseudo-capacitor; Electrochemical
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Funding
- Fundamental Research Funds for the Central Universities [KYZ201540]
- Scientific Research Foundation of Nanijng Agricultural University [050804087]
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Two nanoscale metal-organic frameworks (NMOFs), namely Co-Im and Co-Py, have been firstly prepared in poor solvent through a precipitation method. XRD, TGA and EA results show that as-synthesized NMOFs are isostructural with the reported crystal structure of {[Co(H2IDC)(2)(H2O)(2)]center dot 2DMF}(n) and {[Co(H2PDC)(PDC)]center dot 3H(2)O}(n) molecules. High temperature calcining of these Co-based NMOFs can result in pseudo-capacitive Co3O4 electrodes. Series of electrochemical measurements indicated that the as-prepared Co3O4 material could deliver a maximum specific capacitance of 233 F g(-1), good stability over 1500 cycles with the capacitance retention of 89.8% and low charge-transfer resistance of 1.22 Omega. (C) 2016 Elsevier Ltd. All rights reserved.
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