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首页> 外文期刊>Electrochimica Acta >High performance carbon-coated lithium zinc titanate as an anode material for lithium-ion batteries
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High performance carbon-coated lithium zinc titanate as an anode material for lithium-ion batteries

机译：高性能碳包覆钛酸锂锌作为锂离子电池的负极材料

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摘要

Carbon -coated Li2ZnTi3O8 (Li2ZnTi3O8/C) anodes have been successfully synthesized using beta-cyclodextrin (beta-CD) as the carbon source. The effects of carbon content on the structures and physicochemical properties of the Li2ZnTi3O8/C materials are also studied in detail. It is found that the Li2ZnTi3O8 particles are nano-sized and well disperse into the carbon networks. The carbon coating greatly enhances the electrochemical performance of Li2ZnTi3O8. Li2ZnTi3O8/C-2 with the carbon content of 6.85% shows large specific capacities and good cyclic performance at high current densities. The largest capacities of 169.1, 162.4 and 1503 mAh g(-1) are delivered at 3, 4 and 5 A g(-1), respectively. Cycling for 100 cycles, 160.5, 139.7 and 129.1 mAh g(-1) are kept for the sample at the three current densities mentioned above, respectively. The good electrochemical performance of the Li2ZnTi3O8/C-2 can be attributed to the good crystallinity, proper carbon content, large pore size, small particle size and low charge-transfer resistance. (C) 2015 Elsevier Ltd. All rights reserved.
机译：以β-环糊精（β-CD）为碳源，成功合成了碳包覆的Li2ZnTi3O8（Li2ZnTi3O8 / C）阳极。还详细研究了碳含量对Li2ZnTi3O8 / C材料的结构和理化性质的影响。发现Li 2 ZnTi 3 O 8颗粒是纳米尺寸的并且很好地分散在碳网络中。碳涂层大大增强了Li2ZnTi3O8的电化学性能。碳含量为6.85％的Li2ZnTi3O8 / C-2在高电流密度下显示出大的比容量和良好的循环性能。最大容量169.1、162.4和1503 mAh g（-1）分别以3、4和5 A g（-1）交付。在上述三种电流密度下，样品分别保持160.5、139.7和129.1 mAh g（-1）循环100次。 Li2ZnTi3O8 / C-2的良好电化学性能可归因于良好的结晶度，适当的碳含量，大孔径，小粒径和低电荷转移阻力。 （C）2015 Elsevier Ltd.保留所有权利。

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