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Synthesis of N-doped carbon by microwave-assisited pyrolysis ionic liquid for lithium-ion batteries

机译:微波辅助热解离子液体锂离子电池合成N掺杂碳

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Nitrogen-doped carbon (NDC) was prepared by a novel microwave-assisted pyrolysis of ionic liquidmethod. The carbonation temperature and time of the ionic liquid were obviously dropped down bymicrowave-assisted pyrolysis. The results of XRD, Raman spectra and FT-IR spectra indicated that thepyrolysis product was graphitic nitrogen-doped carbon. The nitrogen dopant in NDC created a porous+ structure and a large number of defects, which introduced many active sites for the Li ion adsorption.Consequently, the NDC delivered high electrochemical performances when used as anode for lithium-1 ion batteries. The NDC electrode exhibited a specific capacity of 243.6mAh.g after 50 cycles at 0.2C-1 and 196mAh.g after 50 cycles at 1.0C.
机译:通过新型的离子液体微波辅助热解法制备了氮掺杂碳(NDC)。微波辅助热解明显降低了离子液体的碳酸化温度和时间。 XRD,拉曼光谱和FT-IR光谱结果表明,热解产物为石墨氮掺杂碳。 NDC中的氮掺杂剂产生了多孔+结构和大量缺陷,为Li离子吸附引入了许多活性位点,因此NDC用作1锂离子电池的负极时具有很高的电化学性能。 NDC电极在0.2C-1的50个循环后显示的比容量为243.6mAh.g,在1.0C的50个循环后显示为196mAh.g。

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