期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 115, 期 19, 页码 9821-9825出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp201669x
关键词
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资金
- Zhejiang University, China
- Fundamental Research Funds for the Central Universities [2010QNA4003]
- Foundation of Ministry of Education of China [20100101120024]
- Foundation of Education Office of Zhejiang Province [Y201016484]
Al-doped LiMn2O4 nanotubes have been synthesized using beta-MnO2 nanotubes as self-templates. Singe-crystalline structure of the Al-doped spinel was verified by high resolution transmission electron microscopy and selected area electron diffraction techniques. Galvanostatic charge/discharge tests indicate that the Al-doped single-crystalline spinel nanotube delivers a discharge capacity of 110 mAh g(-1) at 0.1C rate and retains about 80% of its initial capacity after 200 cycles at 5C rate at 55 degrees C, indicating superior elevated-temperature cycling performance at a high current rate. Furthermore, high crystallinity, single-crystalline nature, and tubular morphology can be well preserved after aging tests for 30 days at 55 degrees C, revealing their good structural stability.
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