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LiNi1/3Co1/3Mn1/3O2和LiNi3/8Co1/4Mn3/8O2納米纖維的合成與電化學(xué)性能
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國(guó)家自然科學(xué)基金（10372087）和湖南省教育廳重點(diǎn)項(xiàng)目(07A071)資助


Synthesis and Electrochemical Properties of LiNi1/3Co1/3Mn1/3O2 and LiNi3/8Co1/4Mn3/8O2 Nanofibers
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    摘要:

    以溶膠前驅(qū)體為紡絲液，通過(guò)靜電紡絲法合成鋰離子電池正極材料LiNi1/3Co1/3Mn1/3O2 和LiNi3/8Co1/4Mn3/8O2納米纖維。采用原子力顯微鏡(AFM)、X射線(xiàn)衍射(XRD)、充放電實(shí)驗(yàn)對(duì)納米纖維的形貌、結(jié)構(gòu)和電化學(xué)性能進(jìn)行研究。結(jié)果表明，納米纖維的直徑在150~200 nm之間，且具有典型的α-NaFeO2層狀結(jié)構(gòu)。LiNi1/3Co1/3Mn1/3O2 和LiNi3/8Co1/4Mn3/8O2納米纖維的首次放電容量均超過(guò)170 mAh·g-1，50次循環(huán)后容量保持率在90%以上

    Abstract:

    LiNi1/3Co1/3Mn1/3O2 and LiNi3/8Co1/4Mn3/8O2 nanofibers as cathode materials for lithium-ion batteries are successfully prepared from sol precursors by using electrospun method. The morphology, crystal structure and electrochemical behaviors are characterized by atomic force microscopy (AFM), X-ray diffraction (XRD) and charge-discharge experiments. The results show that the nanofibers possessed typical layer-structure and the average diameter is in the range of 150-200 nm. Both the initial discharge capacities of LiNi1/3Co1/3Mn1/3O2 and LiNi3/8Co1/4Mn3/8O2 nanofibers are over 170 mAh·g-1 and the capacity retention rates are over 90% up to 50 cycles

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丁燕懷,張 平,龍志林,姜 勇,許 福. LiNi1/3Co1/3Mn1/3O2和LiNi3/8Co1/4Mn3/8O2納米纖維的合成與電化學(xué)性能[J].稀有金屬材料與工程,2009,38(7):1227~1229.[Ding Yanhuai, Zhang Ping, Long Zhilin, Jiang Yong, Xu Fu. Synthesis and Electrochemical Properties of LiNi1/3Co1/3Mn1/3O2 and LiNi3/8Co1/4Mn3/8O2 Nanofibers[J]. Rare Metal Materials and Engineering,2009,38(7):1227~1229.]
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  • 收稿日期:2008-06-24
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