期刊
RSC ADVANCES
卷 3, 期 18, 页码 6650-6655出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra23032e
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-
资金
- China Ministry of Science and Technology [2011AA11A235]
Crystalline Na0.44MnO2 materials are readily synthesized via a solid state method followed by mixing with carbon nanotubes (CNTs). The obtained Na0.44MnO2-CNT composites consist of rod-like Na0.44MnO2 particles entangled with CNTs. Their electrochemical properties were thoroughly investigated in assembled non-aqueous Na0.44MnO2-CNT//Na cells using cyclic voltammetry, galvanostatic testing, and electrochemical impedance spectroscopy. The results show that the Na0.44MnO2-CNT material can deliver a high capacity over 113 mAh g(-1) with stable cycling performance over 40 cycles. In addition, it exhibits an excellent rate capability, delivering a capacity of 95 mAh g(-1) at a high rate of 5 C. The high capacity retention combined with remarkable high-rate capability makes Na0.44MnO2-CNT a promising electrode material for advanced Na-ion batteries.
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