Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 45, Pages 23035-23041Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta04705f
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Funding
- National Natural Science Foundation of China [21203236]
- Guangdong and Shenzhen Innovative Research Team Program [2011D052, KYPT20121228160843692]
- Shenzhen Electronic Packaging Materials Engineering Laboratory [2012-372]
- Shenzhen High Density Electronic Packaging and Device Assembly Key Laboratory [ZDSYS20140509174237196]
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Ternary cobalt nickel sulfide (CoNi2S4) flower-like nanosheets are directly grown on three dimensional (3D) hierarchically porous nickel skeletons by one-step electro-deposition. The resultant 3D porous Ni/CoNi2S4 composites could serve as binder-free integrated electrodes for supercapacitors, which exhibit higher capacitance than those of 3D porous Ni/Co9S8, 3D porous Ni/Ni3S2, Ni foam/CoNi2S4 and smooth Ni/CoNi2S4 electrodes. Furthermore, the 3D porous Ni/CoNi2S4 electrodes demonstrate better electrochemical reversibility and excellent rate capability. The super electrochemical capacitive behavior might be attributed to the highly interconnected conductive networks of 3D hierarchically porous Ni scaffold supported CoNi2S4 flower-like nanosheets with a large specific area and highly active sites.
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