Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 480, Issue -, Pages 57-62Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2016.07.001
Keywords
Layered double hydroxides; Carbon nanotubes; Nanocomposite; Supercapacitor; Homogeneous precipitation; Specific capacitance
Categories
Funding
- National Natural Science Foundation of China [201205095]
- Scientic Research Foundation of Northwest AF University [Z109021115]
- Fundamental Research Funds for the Central Universities [Z109021204]
- Open Project of Key Laboratory of Applied Surface and Colloid Chemistry [2014012]
- Shaanxi Province Science and Technology [2015JQ2057]
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Nickel-Aluminum Layered Double Hydroxide (NiAl-LDH) and nanocomposite of Carbon Nanotubes (CNTs) and NiAl-LDH (CNTsiNiAl-LDH) were prepared by using a facile one-step homogeneous precipitation approach. The morphology, structure and electrochemical properties of the as-prepared CNTsiNiAl-LDH nanocomposite were then systematically studied. According to the galvanostatic charge-discharge curves, the CNTsiNiAl-LDH nanocomposite exhibited a high specific capacitance of 694 F g(-1) at the 1 A g(-1). Furthermore, the specific capacitance of the CNTs/NiAl-LDH nanocomposite still retained 87% when the current density was increased from 1 to 10 A g(-1). These results indicated that the CNTsiNiAl-LDH nanocomposite displayed a higher specific capacitance and rate capability than pure NiAl-LDH. And the participation of CNTs in the NiAl-LDH composite improved the electrochemical properties. Additionally, the capacitance of the CNTs/NiAl-LDH nanocomposite kept at least 92% after 3000 cycles at 20 A g(-1), suggesting that the nanocomposite exhibited excellent cycling durability. This strategy provided a facile and effective approach for the synthesis of nanocomposite based on CNTs and NiAI-LDH with enhanced supercapacitor behaviors, which can be potentially applied in energy storage conversion devices. (C) 2016 Elsevier Inc. All rights reserved.
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