Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 116, Issue 23, Pages 12448-12454Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp3028353
Keywords
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Funding
- Singapore National Research Foundation under CREATE program - Nanomaterials for Water and Energy Management
- Nanyang Technological University, Singapore
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The electron conductivity of electrode material has always been a problem that hinders the practical application of supercapacitor. In this contribution, we report a facile synthesis of highly conductive nickel cobalt oxide-single wall carbon nanotube (NiCo2O4-SWCNT) nanocomposite by controlled hydrolysis process in ethanol-water mixed solvent. Ultrafine NiCo2O4 nanocrystals with a diameter around 6-10 nm are formed on the functionalized SWCNT bundles. This novel material not only exhibits a high specific capacitance of 1642 F g(-1) within a 0.45 V potential range but also shows an excellent cycling stability of 94.1% retention after 2000 cycles at high mass loading. Our method provides a promising facile and high-performance strategy for supercapacitor electrode application.
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