期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 14, 期 31, 页码 11048-11052出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cp41604b
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资金
- Delta Environmental & Education Foundation (DEEF)
Mesoporous slit-structured NiO materials were prepared through a simple hydrothermal route with sodium dodecyl benzene sulfonate (SDBS) as an additive. The as-prepared NiO samples presented high specific capacitance of over 1700 F g(-1) in the potential range from 0.10 to 0.56 V (vs. Hg/HgO/6 mol L-1 KOH) at a constant current of 2 A g(-1), and good capacitance retention of similar to 90% after 1000 continuous charge-discharge cycles. Only the NiO electrode materials with uniform slit-structured mesopores, which were confirmed through nitrogen adsorption-desorption isotherms and high-resolution transmission electron microscope, delivered excellent capacitances far beyond any previous report up to now. Pore structures (including pore shape, size, and distribution) are dominant factors in pseudocapacitor materials.
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