绝缘材料
絕緣材料
절연재료
Insulating Materials
2015年
9期
20-24
,共5页
混合动力汽车%SnO2%碳纳米管%储锂性能
混閤動力汽車%SnO2%碳納米管%儲鋰性能
혼합동력기차%SnO2%탄납미관%저리성능
hybrid electric vehicle%SnO2%carbon nanotube%lithium storage performance
采用湿化学法对碳纳米管(CNT)进行填充,通过控制锡溶液浓度制备出SnO2含量为25%、44%和65%的填充型SnO2-in-CNT复合材料,并对复合材料进行了电化学储锂性能测试和微观组织观察.结果表明:多壁碳纳米管的适宜活化温度为700℃,使用活化后的碳纳米管可以得到填充形态良好的SnO2-in-CNT复合材料,复合材料的储锂可逆容量随着SnO2含量的增加而增大;在50 mAg-1电流密度下SnO2含量为65%时的SnO2-in-CNT复合材料在首次充放电后具有最高的首次库伦效率.
採用濕化學法對碳納米管(CNT)進行填充,通過控製錫溶液濃度製備齣SnO2含量為25%、44%和65%的填充型SnO2-in-CNT複閤材料,併對複閤材料進行瞭電化學儲鋰性能測試和微觀組織觀察.結果錶明:多壁碳納米管的適宜活化溫度為700℃,使用活化後的碳納米管可以得到填充形態良好的SnO2-in-CNT複閤材料,複閤材料的儲鋰可逆容量隨著SnO2含量的增加而增大;在50 mAg-1電流密度下SnO2含量為65%時的SnO2-in-CNT複閤材料在首次充放電後具有最高的首次庫倫效率.
채용습화학법대탄납미관(CNT)진행전충,통과공제석용액농도제비출SnO2함량위25%、44%화65%적전충형SnO2-in-CNT복합재료,병대복합재료진행료전화학저리성능측시화미관조직관찰.결과표명:다벽탄납미관적괄의활화온도위700℃,사용활화후적탄납미관가이득도전충형태량호적SnO2-in-CNT복합재료,복합재료적저리가역용량수착SnO2함량적증가이증대;재50 mAg-1전류밀도하SnO2함량위65%시적SnO2-in-CNT복합재료재수차충방전후구유최고적수차고륜효솔.
The carbon nanotubes (CNTs) were filled with tin dioxide by wet-chemical method, and SnO2-in-CNT composites with 25%, 44%, and 65% of SnO2 were prepared by controlling the concentra-tion of tin solution. The lithium storage performance and microstructure of the composites were tested and observed. The results show that the suitable activation temperature for multiwall carbon nanotube is 700℃. The good form SnO2-in-CNT composites could be obtained by using the activated carbon nano-tubes, and the reversible lithium storage capacity of the composites increases with the increase of SnO2 content. When the content of SnO2 is 65%, the SnO2-in-CNT composite has the highest first coulomb effi-ciency after first charge and discharge under the current density of 50 mAg-1.
