کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1488796 | 992295 | 2013 | 5 صفحه PDF | دانلود رایگان |
• Layers of α-hydroxides of Ni and Co co-stacked from an aqueous colloidal dispersion.
• The solids obtained on co-stacking are interstratified hybrids of the α-hydroxides.
• The hybrids are built by a random stacking of the layers of the two hydroxides.
• The hybrids are potential supercapacitor electrode materials.
• The hybrid with 80% nickel hydroxide shows the highest capacitance of 990 F g−1.
Zwitterionic p-aminobenzoate ion intercalated α-hydroxides of nickel and cobalt exfoliate in water. The hydroxide monolayers of nickel and cobalt could be co-stacked from a mixture of their colloidal dispersions by the addition of excess of nitrate ions resulting in hybrids in which the layers of the two hydroxides were randomly co-stacked. The α-hydroxide hybrids were explored for their potential as supercapacitor electrode materials. The specific capacitance of hybrids vary with [Ni]/[Co] ratio and a maximum capacitance of 990 F g−1 (at a current density of 1 A g−1) with good cycling stability was obtained for the hybrid with [Ni]/[Co] = 4.
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Journal: Materials Research Bulletin - Volume 48, Issue 7, July 2013, Pages 2715–2719