期刊
JOURNAL OF POWER SOURCES
卷 248, 期 -, 页码 615-620出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.09.133
关键词
Core-sheath nanowire; LiMn(x)Fe(1-x)PO(4)4/VGCF; Electrospinning; High-power Li-ion battery
Core-sheath composite nanowires of LiMnxFe1-xPO4 (x = 0, 0.2, 0.4, 0.6, 0.8 and 1.0) with vapor grown carbon fiber (VGCF) were synthesized by an electrospinning method. X-ray diffraction, SEM and TEM revealed that the electrospinning method could successfully fabricate a VGCF core at the nanowire-structured LiMnxFe1-xPO4 sheath covered with an amorphous carbon layer. Furthermore, the spot patterns by selected area electron diffraction confirmed that LiMnxFe1-xPO4 sheath consists of bundles of single-crystalline nanowire. The nanowire-structured electrode materials with uniformly dispersed carbon and highly crystalline active materials provided excellent rate capability. (C) 2013 Elsevier B.V. All rights reserved.
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