Journal
MATERIALS LETTERS
Volume 193, Issue -, Pages 216-219Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.01.121
Keywords
Metal-organic frameworks; Composite materials; Electrochemical capacitors; Energy storage and conversion
Funding
- National Natural Science Foundation of China [21373189]
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A Co-MOF/reduced graphene oxide (Co-MOF/rGO) composite was prepared, and showed enhanced electrochemical performance compared with bare Co-MOF. Notably, the areas of CV curves witness the increase with the augment of cycle numbers and the redox peaks experience shifts, providing obvious transformation evidence. After a long term transformation process, the composite achieves a pretty high specific capacitance of 1521.6 F g(-1) at 0.2 A g(-1) and 1117.6 F g(-1) even at the high current density of 12 A g(-1). This phenomenon could be attributed to the transformation of Co-MOF into CoOOH under the synergy effects of weak alkaline solution and electric field. (C) 2017 Elsevier B.V. All rights reserved.
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