废旧轮胎在锂离子电池纳米负极材料的应用  

Utilization of Waste Tires in Nano Anode Materials of Lithium Ion Battery

作　　者：侯佼 侯春平 王兴蔚 贺超 孟令桐 马少宁 龚波林[3] HOU Jiao;HOU Chun-ping;WANG Xing-wei;HE Chao;MENG Ling-tong;MA Shao-ning;GONG Bo-lin(Ningxia BOLT Technologies Co.,Ltd.,Ningxia Yinchuan 750021;College of Materials Science and Engineering,North Minzu University,Ningxia Yinchuan 750021;College of Chemistry and Chemical Engineering,North Minzu University,Ningxia Yinchuan 750021;Ningxia Silicon Target&Silicon Carbon Anode Material Engineering Technology Research Center,Ningxia Yinchuan 750021,China)

机构地区：[1]宁夏博尔特科技有限公司,宁夏银川750021 [2]北方民族大学材料科学与工程学院,宁夏银川750021 [3]北方民族大学化学与化工学院,宁夏银川750021 [4]宁夏硅靶及硅碳负极材料工程技术研究中心,宁夏银川750021

出　　处：《广州化工》2020年第20期62-65,共4页GuangZhou Chemical Industry

基　　金：北方民族大学重点研发计划项目(2019KJ08);引进人员科研启动项目;宁夏优秀人才支持计划;中国工程院咨询研究项目-宁夏碳基材料产业发展战略研究(2019NXZD5)。

摘　　要：通过碳化废旧轮胎和液相包覆的方法制备了纳米硫碳材料(NSC)和不同碳包覆的复合材料,探究出一条废旧轮胎循环利用和二次电池电极材料制备结合的路线。微观形貌测试显示NSC为不定形碳包覆密排六方结构ZnS纳米颗粒并桥接组成二次颗粒。电化学测试表明,NSC虽有426.6 mAh·g^-1的高比容量,但首效低,循环差。以不同碳源包覆NSC后的复合材料具有高比容量、低容量衰减和好的循环性能。在0.5 C下循环50周后,材料的比容量还保持有267.2~280.1 mAh·g^-1。Nano sulfur carbon materials(NSC)and different nano sulfur carbon composites were prepared by carbonizing waste tires and coating different carbon sources in liquid-phase mixing.A new route of recycling waste tires and preparing electrode materials for secondary batteries was explored.The results showed that NSC was composed of ZnS nanoparticles with hexagonal structure,which were uniformly distributed in amorphous carbon layer and bridge with each other to form secondary particles.The electrochemical test showed that NSC had a high capacity of 426.6 mAh·g^-1,but it also presented a low initial efficiency with poor rate and cycling performance.Composites coated with NSC with different carbon sources had an acceptable specific capacity with low capacity fading and superior cycling performance.After 50 cycles at 0.5 C,the specific capacities of the materials were maintained 267.2~280.1 mAh·g^-1.

关 键 词：废旧轮胎 炭化 纳米硫碳 碳包覆 锂离子电池 

分 类 号：TM911[电气工程—电力电子与电力传动]