期刊
NANO RESEARCH
卷 10, 期 10, 页码 3585-3595出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-017-1569-4
关键词
nanorods; sodium-ion batteries; multi-walled carbon nanotubes; full cell
类别
资金
- National Natural Science Foundation of China [21471091]
- Academy of Sciences large apparatus United Fund [11179043]
- Fundamental Research Funds of Shandong University [2015JC007, 2015JC020]
- Taishan Scholar Project of Shandong Province [ts201511004]
NaFeTiO4 nanorods of high yields (with diameters in the range of 30-50 nm and lengths of up to 1-5 mu m) were synthesized by a facile sol-gel method and were utilized as an anode material for sodium-ion batteries for the first time. The obtained NaFeTiO4 nanorods exhibit a high initial discharge capacity of 294 mA center dot h center dot g(-1) at 0.2 C (1 C = 177 mA center dot g(-1)), and remain at 115 mA center dot h center dot g(-1) after 50 cycles. Furthermore, multi-walled carbon nanotubes (MWCNTs) were mechanically milled with the pristine material to obtain NaFeTiO4/MWCNTs. The NaFeTiO4/ MWCNTs electrode exhibits a significantly improved electrochemical performance with a stable discharge capacity of 150 mA center dot h center dot g(-1) at 0.2 C after 50 cycles, and remains at 125 mA center dot h center dot g(-1) at 0.5 C after 420 cycles. The NaFeTiO4/MWCNTs//Na3V2(PO4)(3)/C full cell was assembled for the first time; it displays a discharge capacity of 70 mA center dot h center dot g(-1) after 50 cycles at 0.05 C, indicating its excellent performances. X-ray photoelectron spectroscopy, ex situ X-ray diffraction, and Raman measurements were performed to investigate the initial electrochemical mechanisms of the obtained NaFeTiO4/MWCNTs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据