中空多孔纳米棒状CuO/C锂离子电池负极材料及电化学性能研究
首发时间:2017-05-12
摘要:本文首次通过一种新颖和简单的配位转化法成功地制备了空心的Cu-MOF前驱体,随后在250 oC的空气条件中煅烧制备中空多孔纳米棒状的CuO/C复合材料。作为锂离子电池负极材料,空心多孔的纳米棒状结构和碳的存在提高了CuO/C复合材料的电化学性能。通过充放电测试发现,在电流密度为100 mA g-1时,循环200次后,CuO/C纳米棒具有的可逆比容量为505 mA h g-1,同时也具有很好的倍率性能。该材料优异的电化学性能使其在锂离子电池的方面的应用具有较大的潜能。
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Hollow Porous CuO/C Nanorods as High Performance Anode for Lithium Ion Batteries
Abstract:The Cu-MOF precursor with hollow morphology was successfully synthesized by a novel and simple coordination transformation reaction at first time. Then, the novel hollow porous CuO/C nanorods were prepared by calcining Cu-MOF at low temperature (250 oC) in air. As anode materials for lithium ion batteries, the designed hollow porous nanorod structure and the presence of carbon greatly enhanced electrochemical performance of CuO/C nanocomposite. The reversible specific capacity of CuO/C is 505 mA h g-1 at a current density of 100 mA g-1 after 200 cycles. The CuO/C nanocomposite also exhibited favorable rate capability. The great electrochemical performances make it a promising anode material for LIBs.
Keywords: Cupric oxide/Carbon Metal organic framework Anode materials Coordination transformation
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No.4733259120058314****
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