Full Paper

Direct Access to Mesoporous Crystalline TiO2/Carbon Composites with Large and Uniform Pores for Use as Anode Materials in Lithium Ion Batteries

  1. Jinwoo Lee2,
  2. Yoon S. Jung3,
  3. Scott C. Warren1,
  4. Marleen Kamperman1,
  5. Seung M. Oh3,
  6. Francis J. DiSalvo4,
  7. Ulrich Wiesner1,*

Article first published online: 7 JAN 2011

DOI: 10.1002/macp.201000687

Issue

Macromolecular Chemistry and Physics

Macromolecular Chemistry and Physics

Volume 212, Issue 4, pages 383–390, February 15, 2011

Additional Information

How to Cite

Lee, J., Jung, Y. S., Warren, S. C., Kamperman, M., Oh, S. M., DiSalvo, F. J. and Wiesner, U. (2011), Direct Access to Mesoporous Crystalline TiO2/Carbon Composites with Large and Uniform Pores for Use as Anode Materials in Lithium Ion Batteries. Macromolecular Chemistry and Physics, 212: 383–390. doi: 10.1002/macp.201000687

Author Information

  1. 1

    Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA

  2. 2

    Department of Chemical Engineering/School of Environmental Science and Engineering, Pohang University of Science and Technology, Kyungbuk 790-784, Korea

  3. 3

    Department of Chemical and Biological Engineering, and Research Center for Energy Conversion & Storage, Seoul National University, Seoul 151-744, Korea

  4. 4

    Department of Chemistry, Cornell University, Ithaca, NY 14853, USA

*Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA.

Publication History

  1. Issue published online: 11 FEB 2011
  2. Article first published online: 7 JAN 2011
  3. Manuscript Received: 5 NOV 2010

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Keywords:

  • batteries;
  • carbon;
  • composites;
  • electrodes;
  • mesoporous materials;
  • synthesis

Graphical Abstract

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By use of block copolymers with varying molecular weights, the direct synthesis of mesoporous and highly crystalline TiO2 (anatase)/carbon composites with large (>5 nm), tunable, and uniform pores is reported. Their performances as anodes in Li ion batteries are also investigated.

Abstract

Mesoporous and highly crystalline TiO2 (anatase)/carbon composites with large (>5 nm) and uniform pores were synthesized using PI-b-PEO block copolymers as structure directing agents. Pore sizes could be tuned by utilizing block copolymers with different molecular weights. The resulting mesoporous TiO2/carbon was successfully used as an anode material for Li ion batteries. Without addition of conducting aid (Super P), the electrode showed high capacity during the first insertion/desertion cycle due to carbon wiring inside the walls of mesoporous TiO2/carbon. The electrode further showed stable cycle performance up to 50 cycles and the specific charge capacity at 30 C was 38 mA h (g of TiO2)−1, which indicates CCM-TiO2/carbon can be used as a material for high rate use.

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