Electrochemical properties of LiMn_xFe_{1鈭?span style='font-style: italic'>x}PO₄ (x聽=聽0, 0.2, 0.4, 0.6, 0.8 and 1.0)/vapor grown carbon fiber core-sheath composite nanowire synthesized by electrospinning method

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• 作者：Koichi Kagesawa ; Eiji Hosono ; Masashi Okubo ; Daisuke Nishio-Hamane ; Tetsuichi Kudo ; Haoshen Zhou
• 关键词：Core&ndash ; sheath nanowire ; LiMnxFe1&minus ; xPO44/VGCF ; Electrospinning ; High-power Li-ion battery
• 刊名：Journal of Power Sources
• 出版年：15 February, 2014
• 年：2014
• 卷：248
• 期：Complete
• 页码：615-620
• 全文大小：1681 K

文摘

Core-sheath composite nanowires of LiMn_xFe_1鈭?em>xPO₄ (x聽=聽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 LiMn_xFe_1鈭?em>xPO₄ sheath covered with an amorphous carbon layer. Furthermore, the spot patterns by selected area electron diffraction confirmed that LiMn_xFe_1鈭?em>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.