| Since lithium-storage materials were adopted as negative electrode materials for lithium-ion batteries instead of lithium metal in lithium batteries, the hidden insecurity and poor cyclic performance caused by the formation of lithium crystalline have been improved, and the high-voltage merit of lithium batteries was remained as well. At the same time, the lithium-ion batteries possess other advantages such as high energy density, little weight, small volume, long cycle-life, little effect of memory and better environment benefits etc., so the lithium ion batteries meet the development requirements of modern information technology such as high capacity and small volume vehicles, and have mushroomed the most rapidly during the past few years.In the development of lithium ion batteries, each great breakthrough originates from the applying of new materials and ideas. Carbon materials (graphite, soft carbon, hard carbon and some amorphous carbon obtained from pitches) are used as anode materials for lithium ion batteries in modern battery technology. However, carbon materials suffer from poor capacity (the theoretical capacity of graphite is only 372 mAh/g) and insecurity. So many efforts have been devoted to the improvement of carbon negative electrode materials and searching for alternative materials. Tin and cobalt -based materials have attracted much interest for the high specific energy capacity, wide raw material sources and good safety.Essential parts of this thesis include the synthesis of novel carbon/tin composites through the pyrolysis of various aromatic carbonates and the studies of these composites as lithium- intercalation electrode materials in lithium-ion batteries. The main results and conclusion are summarized as follows:Novel carbon/tin oxides composites were obtained through the pyrolysis of stannous phthalate precursors. Materials attained in the inert atmosphere exhibit low irreversible capacity in the first discharge but poor cycleability comparing with composites synthesized in the atmosphere. When they work in the voltage range of 0.01 ~ 1.5 V, the initial cycle efficiency of the former composites is 33.12 %, and the charge capacity remains 60.7 % after 10 cycles. The initial cycle efficiency of the latter materials is only 30.87 %, and charge capacity remains 76.5 % after 10 cycles.Novel carbon/tin composites were obtained through the pyrolysis of stannous 1,8-naphthalenedicarboxylate precursors. The composites were tested as anode materials forlithium ion battery in 0.01 -1.0 V, 0.01 ~ 1.5 V, 0.01 ~ 2.0 V voltage ranges, and the charge capacity remains 17 %, 34.8 % and 28.8 % after 20 cycles, respectively. The composites cycled between 0.01 ~ 1.5 V exhibit good cycleability.New carbon prisms were obtained through the pyrolysis of a certain perylene tetracarboxylic acid derivatives. The charge and discharge capacity of this carbon material is 272.1 mAh/g and 506.4 mAh/g in the first cycle, and the initial cycle efficiency is 53.7 %. The charge capacity remains 95.6 % after 30 cycles, and the capacity loss is only 0.15 % per cycle.We have succeeded in embedding the zinc/tin composite oxides into perylene compounds, and yielded the agglutinated SnZnOCn.s composites. The composites were tested as anode materials for lithium-ion batteries in the potential range of 0.01 ~ 1.5 V, the charge and discharge capacity is 586.5 mAh/g and 1555.6 mAh/g for the initial cycle, and the cycle efficiency is only 37.7 %. After 30 cycles, the charge capacity remains 71.0 %, and the capacity loss is 0.97 % per cycle. But amusingly, we found some interesting phenomena when the composites worked between 0.01 ~ 4.35 V. The discharge and charge capacity of initial cycle are 1494.5 mAh/g and 1762.6 mAh/g, which are 1157.0 mAh/g and 1051.6 mAh/g for the second cycle, and drop to 1035.1 mAh/g and 1030.1 mAh/g after 10 cycles respectively. Comparing with the second cycle, the insertion and extraction capacity remains 89.5 % and 98.0 %, respectively.In the thesis, a series of cobalt-contained composite oxid...
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