期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 19, 期 19, 页码 5892-5898出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201204153
关键词
electrochemical capacitors; electrochemical performance; electrochemistry; electrospinning; nanostructures; porous NiCo2O4 nanotubes
资金
- National Research Foundation, Clean Energy Research Project [NRF2009EWT-CERP001-036]
- TUM CREATE center for Electromobility
Novel, porous NiCo2O4 nanotubes (NCO-NTs) are prepared by a single-spinneret electrospinning technique followed by calcination in air. The obtained NCO-NTs display a one-dimensional architecture with a porous structure and hollow interiors. The effect of precursor concentration on the morphologies of the products is investigated. Due to their unique structure, the prepared NCO-NT electrode exhibits a high specific capacitance (1647 Fg(-1) at 1 Ag-1), excellent rate capability (77.3% capacity retention at 25 Ag-1), and outstanding cycling stability (6.4% loss after 3000 cycles), which indicates it has great potential for high-performance electrochemical capacitors. The desirable enhanced capacitive performance of NCO-NTs can be attributed to the relatively large specific surface area of these porous and hollow one-dimensional nanostructures.
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