锂离子蓄电池负极材料的研究进展

Progress in studies on negative material for lithium ion battery

讨论了各种锂离子蓄电池负极材料的结构和嵌锂机理 ,特别是最新研制的、除普通石墨和高度石墨化碳材料以外的改性石墨和可逆容量大于 372mAh/g的其它负极材料 ,包括无序碳 (5 5 0～ 90 0mAh/g)、多并苯半导体(PAS ,85 0mAh/g)、锂过渡金属氮化物 (90 0mAh/g)、非晶态锡基复合氧化物 (ATCO ,6 0 0mAh/g)和表面改性锂金属等材料。认为以PAS为代表的热解碳 (低于 80 0℃ ) ,ATCO ,以Li Co N系化合物为代表的Li3

All kinds of negative materials for lithium ion batteries were discussed on their structures and Li intercalating mechanism. The up to date materials, i.e. the modified graphite and other negative materials whose reversible capacity is more than 372 mAh/g, including unordered carbon materials (550～900 mAh/g), polyacenic semiconductor (PAS, 850 mAh/g), lithium transition metal nitride (900 mAh/g), amorphous tin based composite oxide (ATCO, 600 mAh/g) and surface modified lithium metal were analyzed and evaluated particularly besides the conventional graphite and the order carbons. The results show that the PAS representative low temperature (lower than 800 ℃) pyrolytic carbon and ATCO will be the tendency to develop negative materials for lithium ion batteries as well as Li Co N system representative Li 3N type lithium transition metal nitride and surface modified lithium metal.