以SnCl4·5H2O和尿素为原料,嵌段聚醚F127(EO106-PO70-EO106)为模板剂,通过水热法制备了介孔SnO2材料.XRD、TEM和BET等分析结果表明,模板剂F127添加量对介孔SnO2的孔结构有重要影响.F127添加量增加,SnO2比表面积增大,孔容增大,孔径分布变宽.电化学测试结果表明,介孔的存在不仅能为锂离子脱嵌提供通道,而且可以缓冲SnO2的体积膨胀,从而提高介孔SnO2负极材料的电化学性能;当F127添加量为6.0 g时,所制备SnO2具有124 m2/g的比表面积,平均孔径为4.94 nm,表现出最佳的循环性能和倍率性能,在60 mA/g的电流密度下经30次循环后,其可逆容量仍保持在434 mAh/g;循环伏安测试表明部分高活性Li2O的可逆还原提供了附加的可逆容量.
参考文献
| [1] | Courtney IA.;Dahn JR..ELECTROCHEMICAL AND IN SITU X-RAY DIFFRACTION STUDIES OF THE REACTION OF LITHIUM WITH TIN OXIDE COMPOSITES[J].Journal of the Electrochemical Society,19976(6):2045-2052. |
| [2] | Jie Fan;Tao Wang;Chengzhong Yu;Bo Tu;Zhiyu Jiang;Dongyuan Zhao.Ordered, Nanostructured Tin-Based Oxides/Carbon Composite as the Negative-Electrode Material for Lithium-Ion Batteries[J].Advanced Materials,200416(16):1432-1436. |
| [3] | Jiazheng Wang;Ning Du;Hui Zhang.Large-Scale Synthesis of SnO2 Nanotube Arrays as High-Performance Anode Materials of Li-Ion Batteries[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201122(22):11302-11305. |
| [4] | Xiao Ming Yin;Cheng Chao Li;Ming Zhang.One-Step Synthesis of Hierarchical SnO2 Hollow Nanostructures via Self-Assembly for High Power Lithium Ion Batteries[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201017(17):8084-8088. |
| [5] | Liu, Xiaowu;Zhong, Xiongwu;Yang, Zhenzhong;Pan, Fusen;Gu, Lin;Yu, Yan.Gram-Scale Synthesis of Graphene-Mesoporous SnO2 Composite as Anode for Lithium-ion Batteries[J].Electrochimica Acta,2015:178-186. |
| [6] | Yang, Zhenglong;Zhao, Shuping;Jiang, Wei;Sun, Xuelin;Meng, Yanfeng;Sun, Changmei;Ding, Shujiang.Carbon-supported SnO2 nanowire arrays with enhanced lithium storage properties[J].Electrochimica Acta,2015:321-326. |
| [7] | Ping Wu;Ning Du;Hui Zhang.Carbon-coated SnO2 nanotubes: template-engaged synthesis and their application in lithium-ion batteries[J].Nanoscale,20112(2):746-750. |
| [8] | 杨琪;胡文彬.无定形SnO2-C复合纤维及其电化学性能研究[J].无机材料学报,2015(08):861-866. |
| [9] | Chaofeng Zhang;Xing Peng;Zaiping Guo.Garbon-Goated SnO2/graphene nanosheets as highly reversible anode materials for lithium ion batteries[J].Carbon: An International Journal Sponsored by the American Carbon Society,20125(5):1897-1903. |
| [10] | 虞祯君;王艳莉;邓洪贵;詹亮;杨光智;杨俊和;凌立成.SnO2/石墨烯锂离子电池负极材料的制备及其电化学行为研究[J].无机材料学报,2013(5):515-520. |
| [11] | Li, Yudong;Lu, Xuan;Wang, Hongkang;Xie, Chong;Yang, Guang;Niu, Chunming.Growth of Ultrafine SnO2 Nanoparticles within Multiwall Carbon Nanotube Networks: Non-Solution Synthesis and Excellent Electrochemical Properties as Anodes for Lithium Ion Batteries[J].Electrochimica Acta,2015:778-785. |
| [12] | Hyesun Kim;Jaephil Cho.Hard templating synthesis of mesoporous and nanowire SnO2 lithium battery anode materials[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,20087(7):771-775. |
| [13] | Zhang YL;Liu Y;Liu ML.Nanostructured columnar tin oxide thin film electrode for lithium ion batteries[J].Chemistry of Materials: A Publication of the American Chemistry Society,200619(19):4643-4646. |
| [14] | Bing Liu;Minhua Cao;Xinyu Zhao;Yuan Tian;Changwen Hu.Facile synthesis of ultrafine carbon-coated SnO_2 nanoparticles for high-performance reversible lithium storage[J].Journal of Power Sources,2013Dec.1(Dec.1):54-59. |
| [15] | 李志平;赵瑞红;郭奋;陈建峰;王刚.高比表面积有序介孔氧化铝的制备与表征[J].高等学校化学学报,2008(1):13-17. |
| [16] | Ian A. Courtney;W. R. McKinnon;J. R. Dahn.On the aggregation of tin in SnO composite glasses caused by the reversible reaction with lithium[J].Journal of the Electrochemical Society,19991(1):59-68. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%