采用热解Sn(OH)4和淀粉混合物制备碳包覆纳米SnO2的方法合成了无定形碳包覆纳米SnO2.采用XRD、SEM、TEM、STEM-EDX以及充放电测试等手段对其结构、形貌和性能进行表征.结果表明,样品材料中无定形碳呈薄片状,被包覆的纳米SnO2(20~50nm)均匀分布在片状无定形碳中.产物中SnO2与碳的不同比例影响了产物的性能,样品(SnO2∶ C=1∶ 1)首次循环的可逆比容量达到404mAh·g-1,20次循环内无明显衰减.
参考文献
[1] | Nam S C,Yoon Y S,Cho W I,et al.Electrochem.Commun.,2001,3(1):6-10. |
[2] | Poizot P,Grugeon S,Grugeon S,et al.Nature,2000,407(6803):496-499. |
[3] | Gao X P,Bao J L,Pan G L,et al.J.Phys.Chem.B,2004,108(18):5547-5551. |
[4] | Xia Y Y,Sakai T,Fujieda T,et al.J.Electrochem.Soc.,2001,148(5):A471-A481. |
[5] | Lee H Y,Jang S W,Lee S M,et al.J.Power Sources,2002,112(1):8-12. |
[6] | Dong Q F,Wu C Z,Jin M G,et al.Solid State Ionics,2004,167(1-2):49-54. |
[7] | Chiu K F,Liu K M,Lin H C,et al.J.Electrochem.Soc.,2007,154(5):A433-A437. |
[8] | Tamura T,Kato Y,Mikami A,et al.J.Electrochem.Soc.,2006,153(12):A2227-A2231. |
[9] | Park M S,Kang Y M,Kim J H,et al.Carbon,2008,46(1):35-40. |
[10] | Yuan L,Wang J,Chew S Y,et al.J.Power Sources,174(2):1183-1187. |
[11] | Wang T,Ma Z N,Xu F,et al.Electrochem.Commun.,2003,5(7):599-602. |
[12] | Li H,Huang X,Chen L.Solid State Ionics,1999,123(1-4):189-197. |
[13] | 何则强,熊利芝,肖卓炳,等(HE Ze-Qiang,et al).无机材料学报(Journal of Inorganic Materials),2006,22(2):253-257. |
[14] | Courtney I A,Dahn J R.J.Electrochem.Soc.,1997,144(6):2045-2050. |
[15] | Brousse T,Retoux R.J.Electrochem.Soc.,1998,145(1):1-4. |
[16] | Whitehead A H,Elliott J M,Owen J R.J.Power Sources,1999,81-82:33-38. |
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