TY  - JOUR
AU  - Hou, Xuan
AU  - Li, Chuanchuan
AU  - Xu, Huayun
AU  - Xu, Liqiang
PY  - 2017
TI  - NaFeTiO4 nanorod/multi-walled carbon nanotubes composite as an anode material for sodium-ion batteries with high performances in both half and full cells
JO  - Nano Research
SN  - 1998-0124
SP  - 3585
EP  - 3595
VL  - 10
IS  - 10
AB  - NaFeTiO4 nanorods of high yields (with diameters in the range of 30–50 nm and lengths of up to 1–5 μm) 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·h·g-1 at 0.2 C (1 C = 177 mA·g–1), and remain at 115 mA·h·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·h·g–1 at 0.2 C after 50 cycles, and remains at 125 mA·h·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·h·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.
UR  - https://doi.org/10.1007/s12274-017-1569-4
DO  - 10.1007/s12274-017-1569-4