Ultrathin carbon nanopainting of LiFePO4 by oxidative surface polymerization of dopamine

被引:25
作者
Ding, Bo [1 ]
Tang, Wei Chin [2 ]
Ji, Ge [2 ]
Ma, Yue [1 ]
Xiao, Pengfei [3 ]
Lu, Li [3 ]
Lee, Jim Yang [1 ]
机构
[1] Ctr Life Sci CeLS, NUS Grad Sch Integrat Sci & Engn NGS, Singapore 117455, Singapore
[2] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 119260, Singapore
[3] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
关键词
Surface polymerization; Dopamine; Carbon coating; Phosphate cathode; Lithium ion battery; LITHIUM-ION BATTERIES; CATHODE MATERIALS; MULTIFUNCTIONAL COATINGS; PHOSPHO-OLIVINES; STORAGE DEVICES; ELECTRODE; NANOCOMPOSITE; POLYDOPAMINE; TEMPERATURE; PERFORMANCE;
D O I
10.1016/j.jpowsour.2014.04.131
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The common strategy to address the low electronic conductivity of LiFePO4 is to downsize LiFePO4 and to coat the nanocrystal with conductive carbon film. The major issues with existing carbon coating techniques are thickness and quality control. This paper reports a facile carbon coating method which can provide ultrathin, uniform and fully encapsulating carbon coating on LiFePO4. This coating method capitalizes on the redox chemistry of surface Fe3+ on solvothermally synthesized LiFePO4 nanocrystal, to deposit uniform thin films of polydopamine films. The polymer film is easily carbonized into ultrathin carbon film. The carbon coated LiFePO4 exhibits very high rate performance (143 mAh g(-1) at current density of 1700 mA g(-1)) with excellent capacity retention. (c) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:239 / 245
页数:7
相关论文
共 43 条
  • [1] Nanostructured materials for advanced energy conversion and storage devices
    Aricò, AS
    Bruce, P
    Scrosati, B
    Tarascon, JM
    Van Schalkwijk, W
    [J]. NATURE MATERIALS, 2005, 4 (05) : 366 - 377
  • [2] Direct synthesis of nanocrystalline Li0.90FePO4: observation of phase segregation of anti-site defects on delithiation
    Badi, Shri-Prakash
    Wagemaker, Marnix
    Ellis, Brian L.
    Singh, Deepak P.
    Borghols, Wouter J. H.
    Kan, Wang Hay
    Ryan, D. H.
    Mulder, Fokko M.
    Nazar, Linda F.
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (27) : 10085 - 10093
  • [3] Bard A.J, 2002, Student Solutions Manual to accompany Electrochemical Methods: Fundamentals and Applicaitons, V2e
  • [4] Protein adsorption on dopamine-melanin films: Role of electrostatic interactions inferred from ζ-potential measurements versus chemisorption
    Bernsmann, Falk
    Frisch, Benoit
    Ringwald, Christian
    Ball, Vincent
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2010, 344 (01) : 54 - 60
  • [5] Voltammetric resolution of dopamine in the presence of ascorbic acid and uric acid at poly (calmagite) film coated carbon paste electrode
    Chandra, Umesh
    Swamy, B. E. Kumara
    Gilbert, Ongera
    Sherigara, B. S.
    [J]. ELECTROCHIMICA ACTA, 2010, 55 (24) : 7166 - 7174
  • [6] Electronically conductive phospho-olivines as lithium storage electrodes
    Chung, SY
    Bloking, JT
    Chiang, YM
    [J]. NATURE MATERIALS, 2002, 1 (02) : 123 - 128
  • [7] Monodisperse Polymer Capsules: Tailoring Size, Shell Thickness, and Hydrophobic Cargo Loading via Emulsion Templating
    Cui, Jiwei
    Wang, Yajun
    Postma, Almar
    Hao, Jingcheng
    Hosta-Rigau, Leticia
    Caruso, Frank
    [J]. ADVANCED FUNCTIONAL MATERIALS, 2010, 20 (10) : 1625 - 1631
  • [8] Rapid synthesis of LiFePO4/C composite by microwave method
    Guo, Xiang-Feng
    Zhan, Hui
    Zhou, Yun-Hong
    [J]. SOLID STATE IONICS, 2009, 180 (4-5) : 386 - 391
  • [9] Non-Covalent Self-Assembly and Covalent Polymerization Co-Contribute to Polydopamine Formation
    Hong, Seonki
    Na, Yun Suk
    Choi, Sunghwan
    Song, In Taek
    Kim, Woo Youn
    Lee, Haeshin
    [J]. ADVANCED FUNCTIONAL MATERIALS, 2012, 22 (22) : 4711 - 4717
  • [10] Improved electrode performance of porous LiFePO4 using RuO2 as an oxidic nanoscale interconnect
    Hu, Yong-Sheng
    Guo, Yu-Guo
    Dominko, Robert
    Gaberscek, Miran
    Jamnik, Janko
    Maier, Joachim
    [J]. ADVANCED MATERIALS, 2007, 19 (15) : 1963 - +