Facile synthesis of iron-doped SnO2/reduced graphene oxide composite as high-performance anode material for lithium-ion batteries
Facile synthesis of iron-doped SnO2/reduced graphene oxide composite as high-performance anode material for lithium-ion batteries
复制标题
轻松合成铁掺杂 SnO2/还原氧化石墨烯复合材料作为高性能锂离子电池负极材料
DOI：
10.1016/j.jallcom.2018.03.155
复制
发表时间：
2018-06
影响因子：
6.2
通讯作者：
Jin Guo
中科院分区：
文献类型：
--
作者：
Junjie Wang;Luyang Wang;Siyu Zhang;Shuiying Liang;Xianqing Liang;Haifu Huang;Wenzheng Zhou;Jin Guo
用一种简单的湿化学法合成了铁掺杂SnO2/还原石墨烯氧化物(Fe-SnO2/rGO)复合材料。结果表明，Fe-SnO2纳米晶(∼8 nm)均匀地固定在RGO薄片上，含量为69.5wt% 。所制备的Fe-SnO_2/RGO复合材料作为锂离子电池负极材料，在0.1 A−_g−_1下循环100次后的可逆容量为1353 _g−_1。即使在1 A_ _g_−_1的高比电流下，仍保持了691 _A_g−_1的可逆容量，在不同的比电流下循环50次后回到0.1 _A_g_−_1时容量可达1248 _g _g−_1。Fe-SnO2/rGO复合材料优异的电化学性能可以归功于Fe的掺杂增强了Fe-SnO2纳米晶与rGO片层之间的界面相互作用，提高了复合材料的电导率，更重要的是促进了循环过程中Li2O和SnO2之间的转化反应。
The iron-doped SnO2/reduced graphene oxide (Fe-SnO2/rGO) composite has been facilely synthesized through a simple wet chemical method. It is shown that the Fe-SnO2nanocrystals (∼8 nm) are homogeneously anchored onto rGO sheets with the content of 69.5 wt%. As the anode material for lithium-ion batteries, the as-prepared Fe-SnO2/rGO composite exhibits a reversible capacity of 1353 mAh g−1after 100 cycles at 0.1 A g−1. Even at a high specific current of 1 A g−1, it still maintains a high reversible capacity of 691 mAh g−1, and a capacity of 1248 mAh g−1can be delivered when the specific current returns back to 0.1 A g−1after 50 cycles at different specific currents. The excellent electrochemical performance of Fe-SnO2/rGO composite can be attributed to the Fe doping, which can enhance the interfacial interaction between Fe-SnO2nanocrystals and rGO sheets, improve the electrical conductivity of the composite and more importantly, facilitate the conversion reaction between Li2O and SnO2during cycling.
登录
查看更多内容
影响因子：
56.9
作者：
Idota, Y;Kubota, T;Miyasaka, T
通讯作者：
Miyasaka, T
影响因子：
9.5
作者：
Hui Zhang;Jinyin Liu;Guanqi Zhao;Yongjun Gao;T. Tyliszczak;P. Glans;Jinghua Guo;Ding Ma;
通讯作者：
Hui Zhang;Jinyin Liu;Guanqi Zhao;Yongjun Gao;T. Tyliszczak;P. Glans;Jinghua Guo;Ding Ma;
影响因子：
9.2
作者：
Qi Guo;Z. Zheng;Haili Gao;Jia Ma;X. Qin
通讯作者：
Qi Guo;Z. Zheng;Haili Gao;Jia Ma;X. Qin
影响因子：
10.8
作者：
Paek, Seung-Min;Yoo, EunJoo;Honma, Itaru
通讯作者：
Honma, Itaru
DOI：
10.1021/jp503941t
发表时间：
2014-08-14
期刊：
The journal of physical chemistry. C, Nanomaterials and interfaces
影响因子：
--
作者：
Gandhiraman RP;Nordlund D;Javier C;Koehne JE;Chen B;Meyyappan M
通讯作者：
Meyyappan M