用气纺丝法制备了氧化物复合碳纤维材料的前驱体,并通过惰性气氛800℃高温处理得到氧化物复合碳纤维纳米线。通过扫描电镜对所制得的纳米碳纤维进行显微结构分析,重点考察其作为锂离子电池负极材料的电化学性能。结果表明:CF-Sn O_2-Co_3O_4碳纤维作为负极主材组装的电池具有最佳的充放电性能,初次放电容量可达到1490 m Ah/g,50次循环后比容量保持在599 m Ah/g,电化学阻抗最小,倍率性能最好。因此,CF-Sn O_2-Co_3O_4碳纤维有希望成为一种性能优良的锂电池负极新材料。
【英文摘要】
Composite carbon fibers(CF)with Sn O_(2 )and Co_3O_4 were prepared by blowing spinning process and graphitized at 800℃,and their microstructures were examined by SEM.The composite carbon fibers were used as anode to assemble lithium ion batteries and the electrochemical performance of lithium ion batteries based on different anodes was tested.The batteries with CF-Sn O_2-Co_3O_4 nanowires as anode show the best charge-discharge properties.The first discharge specific capacity is as high as 1490 m Ah/g.After...
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