采用溶剂热和溶液法合成了锂离子电池负极材料2,6.萘二酸锂(Li2NDC)三维配位聚合物。通过傅立叶红外光谱(FT.IR)、XRD和SEM等方法对样品进行分析;以50mA/g的电流在0.2—3.0V充放电,测试电化学性能。1molLi2NDC在首次放电时可嵌入2mol Li+,放电平台位于0.75V处。溶剂热法、溶液法合成的Li2NDC,平均粒径分别为50弘m和3Ixm,第50次循环的放电比容量分别为60.8mAh/g和156.9mAh/g。
A 3 D 2,6-napthalenedicarboxylate lithium( Li2 NDC)coordination polymer as anode material for Li-ion battery was syn- thesized by solvothermal and solution method. Samples were analysized by Fourier transform infrared spectrometer( FT-IR), XRD and SEM methods. Electrochemical performance was tested by charged-discharged in 0.2 ~ 3.0 V with current of 50 mA/g. 1 mol Li2 NDC eould insert 2 mol Li ~ in initial discharge with a discharge plateau located near 0.75 V. The average particle sizes of Li2 NDC synthesized by solvothermal method and solution method were 50 Ixm and 3μm, respectively, the discharge specific capaci- ties at the 50th cycle were 60. 8 mAh/g and 156.9 mAh/g,respectively.