Hierarchical NiCoO2 nanosheets supported on amorphous carbon nanotubes for high-capacity lithium-ion batteries with a long cycle life
Hierarchical NiCoO2 nanosheets supported on amorphous carbon nanotubes for high-capacity lithium-ion batteries with a long cycle life
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DOI：
10.1039/c4ta02003k
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发表时间：
2014-07
影响因子：
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通讯作者：
Xin Xu;Bitao Dong;Shujiang Ding;Chunhui Xiao;Demei Yu
中科院分区：
文献类型：
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作者：
Xin Xu;Bitao Dong;Shujiang Ding;Chunhui Xiao;Demei Yu
在本文中，我们报道了一种简单的方法来合成一维（1D）的层次NiCoO 2纳米片（NS）@无定形碳纳米管复合材料的基础上的模板和碳源的聚合物纳米管（PNTs）。重要的是，这些磺化的CNT还可以用于制备许多其他功能性的1D金属氧化物@无定形CNT纳米结构，例如TiO 2、SnO 2、CoO和NiO等。由于NiCoO 2 NS和无定形CNT的优异纳米结构和协同效应，NiCoO 2@CNT复合材料提供1309 mA h g-1的放电容量，即使在400 mA g-1的电流密度下300次循环之后。这项工作中报道的基于NiCoO 2的锂离子电池（LIB）的有利改进表明，一维无定形碳基质为高容量金属氧化物阳极纳米材料提供了显着的好处。
In this paper, we report a facile approach to the synthesis of one-dimension (1D) hierarchical NiCoO2 nanosheets (NSs)@amorphous CNT composites based on the templates and carbon source of polymeric nanotubes (PNTs). Importantly, these sulfonated PNTs can also be used to prepare many other functional 1D metal oxides@amorphous CNT nanostructures, such as TiO2, SnO2, CoO and NiO, etc. Due to the outstanding nanostructures and the synergistic effects of the NiCoO2 NSs and amorphous CNTs, an ultrahigh discharge capacity of 1309 mA h g−1 is delivered by the NiCoO2@CNT composites, even after 300 cycles at a current density of 400 mA g−1. The favorable improvements of the NiCoO2 based lithium-ion batteries (LIBs) reported in this work illustrate that the 1D amorphous carbon matrix offers significant benefits for high-capacity metal oxide anode nanomaterials.