-
采用改进的Hummers 法, 以石墨粉为原料制备氧化石墨, 然后使用微波还原法制备石墨烯, 最后以石墨烯作为负极材料组装锂离子电池. 系统的研究了高温氧化阶段中温度对氧化石墨的氧化程度、石墨烯的还原程度和比表面积以及锂离子电池性能的影响. 利用场发射扫描电镜(FESEM)、 X射线光电子能谱(XPS)、X射线衍射仪(XRD)、BET测量仪对氧化石墨和石墨烯的微观结构及比表面积等进行测试和表征. XRD, XPS及电化学测试的结果显示当高温阶段氧化温度为90℃时, 氧化石墨的氧化程度最高, 相应的石墨烯也具有最高的还原程度和最大的比表面积423.2 m2/g, 同时石墨烯锂离子电池也具有更好的性能: 首次放电比容量为1555.5 mAh/g, 充电容量为1024.6 mAh/g, 其循环放电比容量达到600 mAh/g.Graphite oxide is synthesized from graphite powder by a modified Hummers method, and the oxidation temperature is controlled in high-temperature oxidation process. By treating graphite oxide powders in a commercial microwave oven, graphene materials can be readily obtained. The morphologies, microstructures, specific surface areas and other features of the graphene and graphite oxide are characterized by FESEM, XPS, XRD and BET. Electrochemical performances of the lithium-ion batteries based on graphene anodes are investigated. The results show that graphene obtained at the oxidation temperature of 90℃ in high-temperature oxidation process actually displays the most remarkable electrochemical performances, that is, the first discharge specific volume and charge capacity of graphene are as high as 1555.5 mAh/g and 1024.6 mAh/g, and after 30 cycles graphene still possess as high as a discharge capacity of 600 mAh/g.
[1] Novoselov K S, Geim A K, Morozov S V 2004 Science 306 666
[2] Zhang Y B, Tan Y W, Stormer H L 2005 Nature Materials 438 201
[3] Falkovsky L A 2008 Physics-Uspekhi 51 887
[4] Lee C, Wei X, Kysar J W, Hone J 2008 Science 321 385
[5] Foster M S, Aleiner I L 2009 Physical Review B 79 5415
[6] Hou X H, Hu S J, Shi L 2010 Acta Phys. Sin. 59 2109 (in Chinese) [侯贤华, 胡社军, 石璐 2010 物理学报 59 2109]
[7] Hou Z F, Liu H Y, Zhu Z Z, Huang M C, Yang Y 2003 Acta Phys. Sin. 52 0952 (in Chinese) [侯株锋, 刘慧英, 朱梓忠, 黄美纯, 杨勇 2003 物理学报 52 0952]
[8] Hou X H, Hu S J, Li W S, Ru Q, Yu H W, Huang Z W 2008 Chin. Phys. B 17 3422
[9] Shi S L, Liu Y G, Zhang J Y, Wang T H 2009 Chin. Phys. B 18 4564
[10] Li J, Yang C Z, Zhang X G, Zhang J, Xiao B J 2009 Acta Phys. Sin. 58 9 (in Chinese) [李佳, 杨传铮, 张熙贵, 张建, 夏保佳 2009 物理学报 58 9]
[11] Zhang J, Hu Y S, Tessonnier J P, Weinberg G., Maier J, Schlogl R, Su D S 2008 Adv. Mater. 20 1450
[12] Yoo E, Kim J, Hosono E, Zhou H, Kudo T, Honma I 2008 Nano. Lett. 8 2277
[13] Novoselov K S, Geim A K, Morozov S V, Jiang D, Zhang Y, Dubonos S V, Grigorieva I V, Firsov A A 2004 Science 306 666
[14] Jia L, Xie E Q, Pan X J, Zhang Z X 2009 Acta Phys. Sin. 58 3377 (in Chinese) [贾璐, 谢二庆, 潘孝军, 张振兴 2009物理学报58 3377]
[15] Geim A K, Novoselov K S 2007 Nature Materials 6 183
[16] Fu L, Liu H B, Zou Y H, Li B 2005 Carbon 04 10 (in Chinese) [傅玲, 刘洪波, 邹艳红, 李波 2005 炭素 04 10]
[17] Gnanamuthu R M, Lee C W 2011 Materials Chemistry and Physics 130 831
[18] Zhang Q T, Yu Z L, Du P, Su C 2010 Recent Patents on Nanotechnology 04 100
-
[1] Novoselov K S, Geim A K, Morozov S V 2004 Science 306 666
[2] Zhang Y B, Tan Y W, Stormer H L 2005 Nature Materials 438 201
[3] Falkovsky L A 2008 Physics-Uspekhi 51 887
[4] Lee C, Wei X, Kysar J W, Hone J 2008 Science 321 385
[5] Foster M S, Aleiner I L 2009 Physical Review B 79 5415
[6] Hou X H, Hu S J, Shi L 2010 Acta Phys. Sin. 59 2109 (in Chinese) [侯贤华, 胡社军, 石璐 2010 物理学报 59 2109]
[7] Hou Z F, Liu H Y, Zhu Z Z, Huang M C, Yang Y 2003 Acta Phys. Sin. 52 0952 (in Chinese) [侯株锋, 刘慧英, 朱梓忠, 黄美纯, 杨勇 2003 物理学报 52 0952]
[8] Hou X H, Hu S J, Li W S, Ru Q, Yu H W, Huang Z W 2008 Chin. Phys. B 17 3422
[9] Shi S L, Liu Y G, Zhang J Y, Wang T H 2009 Chin. Phys. B 18 4564
[10] Li J, Yang C Z, Zhang X G, Zhang J, Xiao B J 2009 Acta Phys. Sin. 58 9 (in Chinese) [李佳, 杨传铮, 张熙贵, 张建, 夏保佳 2009 物理学报 58 9]
[11] Zhang J, Hu Y S, Tessonnier J P, Weinberg G., Maier J, Schlogl R, Su D S 2008 Adv. Mater. 20 1450
[12] Yoo E, Kim J, Hosono E, Zhou H, Kudo T, Honma I 2008 Nano. Lett. 8 2277
[13] Novoselov K S, Geim A K, Morozov S V, Jiang D, Zhang Y, Dubonos S V, Grigorieva I V, Firsov A A 2004 Science 306 666
[14] Jia L, Xie E Q, Pan X J, Zhang Z X 2009 Acta Phys. Sin. 58 3377 (in Chinese) [贾璐, 谢二庆, 潘孝军, 张振兴 2009物理学报58 3377]
[15] Geim A K, Novoselov K S 2007 Nature Materials 6 183
[16] Fu L, Liu H B, Zou Y H, Li B 2005 Carbon 04 10 (in Chinese) [傅玲, 刘洪波, 邹艳红, 李波 2005 炭素 04 10]
[17] Gnanamuthu R M, Lee C W 2011 Materials Chemistry and Physics 130 831
[18] Zhang Q T, Yu Z L, Du P, Su C 2010 Recent Patents on Nanotechnology 04 100
计量
- 文章访问数: 8576
- PDF下载量: 866
- 被引次数: 0
下载:
