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Jung, Yoon Seok
Electrochemical Solid-State Energy Storage Lab
Research Interests
  • Batteries, All-solid-state batteries, solid electrolytes, electrodes, atomic layer deposition,energy storage devices

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

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Title
Direct Access to Mesoporous Crystalline TiO2/Carbon Composites with Large and Uniform Pores for Use as Anode Materials in Lithium Ion Batteries
Author
Lee, JinwooJung, Yoon S.Warren, Scott C.Kamperman, MarleenOh, Seung M.DiSalvo, Francis J.Wiesner, Ulrich
Keywords
batteries; carbon; composites; electrodes; mesoporous materials; synthesis
Issue Date
2011-02
Publisher
WILEY-V C H VERLAG GMBH
Citation
MACROMOLECULAR CHEMISTRY AND PHYSICS, v.212, no.4, pp.383 - 390
Abstract
Mesoporous and highly crystalline TiO2 (anatase)/carbon composites with large (> 5nm) 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 38mA h (g of TiO2)(-1), which indicates CCM-TiO2/carbon can be used as a material for high rate use.
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DOI
10.1002/macp.201000687
ISSN
1022-1352
Appears in Collections:
ECHE_Journal Papers
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