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Issue 36, 2013
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NiTi layered double hydroxide thin films for advanced pseudocapacitor electrodes

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Abstract

The performance of pseudocapacitors usually depends largely on careful manipulation of nano-architectures and suitable composition of the active materials. Herein, NiTi layered double hydroxide (LDH) thin films with uniform density were synthesized by a process including two hydrothermal treatment steps and the composition of the hexagonal NiTi-LDH nanosheets was tunable in a relatively wide range. The obtained NiTi-LDH films on nickel foam show a high areal capacitance of 10.37 F cm−2 at 5 mA cm−2, and good cycling stability (86% of its initial value was preserved after 1000 charge–discharge cycles), much better than β-Ni(OH)2 and basic nickel hydroxides carbonate {Ni2(OH)2CO3·4H2O} films. It is indicated that NH3·H2O in the reaction solution played some important roles including enlarging the particle size, focusing the size distribution, and regulating the stacking modes of NiTi-LDH on nickel foam. This work demonstrated the importance of homogeneous dispersion of Ti atoms in layered nanostructures used in supercapacitors.

Graphical abstract: NiTi layered double hydroxide thin films for advanced pseudocapacitor electrodes

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Publication details

The article was received on 06 Mar 2013, accepted on 16 Jun 2013 and first published on 20 Jun 2013


Article type: Paper
DOI: 10.1039/C3TA10954B
Citation: J. Mater. Chem. A, 2013,1, 10655-10661

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    NiTi layered double hydroxide thin films for advanced pseudocapacitor electrodes

    Y. Gu, Z. Lu, Z. Chang, J. Liu, X. Lei, Y. Li and X. Sun, J. Mater. Chem. A, 2013, 1, 10655
    DOI: 10.1039/C3TA10954B

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