期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 17, 期 6, 页码 1711-1716出版社
SPRINGER
DOI: 10.1007/s10008-013-2022-6
关键词
Nickel oxide; Flower-like microspheres; Supercapacitor electrodes; Template-free
资金
- Tongji University Research Foundation [1380219039]
Hierarchical flower-like NiO microsphere was successfully synthesized by a simple one-step template-free hydrothermal process, using L-lysine as precipitator and nickel sulfate as nickel source. The as-synthesized materials were characterized by X-ray diffraction, field emission scanning electron microscope, high-resolution transmission electron microscope, and the electrochemical workstation. The electrochemical results show that the flower-like NiO microspheres exhibit specific capacitance as large as 324 Fg(-1) at the current density of 2 Ag-1 and the specific capacitance retention can maintain 83 % after 1,000 cycles at the current density of 20 Ag-1 in 6 M KOH.
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