Abstract
Porous cobalt aluminum layered double hydroxide (CoAl-LDH) nanoflake arrays on nickel foam were synthesized by a facile hydrothermal synthesis method. The obtained CoAl-LDH film consisted of interconnected nanoflakes with the thicknesses of ~. 20. nm and showed an extended net-like structure. The electrochemical performance of CoAl-LDH nanoflake arrays was tested by cyclic voltammetry and galvanostatic charge/discharge test. The porous CoAl-LDH nanoflake arrays showed good pseudocapacitive performances with high capacitance and good cycle stability. At room temperature, the porous CoAl-LDH nanoflake arrays exhibited a high specific capacitance of 930. F/g at 2. A/g and their specific capacitances were still up to 669. F/g at 16. A/g. A good cycling stability was also observed for the CoAl-LDH nanoflake arrays with a capacitance retention of 88.9% of the highest value after 2000. cycles at 2. A/g.
Original language | English |
---|---|
Pages (from-to) | 28-32 |
Number of pages | 5 |
Journal | Applied Clay Science |
Volume | 102 |
DOIs | |
Publication status | Published - Dec 1 2014 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2014 Elsevier B.V.
ASJC Scopus Subject Areas
- Geology
- Geochemistry and Petrology
Keywords
- CoAl layered double hydroxides
- Nanoflake arrays
- Porous film
- Supercapacitor