High-power lithium ion batteries based on preorganized necklace type Li4Ti5O12/VACNT nano-composites

Pawlitzek F, Pampel J, Schmuck M, Althues H, Schumm B, Kaskel S (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Journal of Power Sources Elsevier

Book Volume: 325

Pages Range: 1-6

DOI: 10.1016/j.jpowsour.2016.06.016

Abstract

Li4Ti5O12 as anode material for high power Li⁺-ion batteries is very promising due to its unique electronic properties. However, the lack of electronic conductivity as well as the low Li⁺-ion diffusion coefficient are major drawbacks in achieving high power densities. In this work, therefore, we prepared a nano-composite consisting of vertically aligned carbon nanotube arrays decorated with in-situ grown necklace type Li4Ti5O12 nanoparticles. Owing to this structure the electrodes exhibit outstanding rate performances with specific capacities of 110 mAh g^-1 up to 300C and cycling performance with high capacity retention of 97% after 500 cycles at 10C. Thus, the combination of short Li⁺-ion diffusion distances within Li4Ti5O12 particles, remarkable electronic conductivity by carbon nanotubes directly grown on the current collector as well as a high contact surface area due to an open pore geometry is essential in achieving high power Li4Ti5O12 anodes.

Involved external institutions

Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology

Germany (DE) VARTA Micro Innovation GmbH

Austria (AT)

How to cite

APA:

Pawlitzek, F., Pampel, J., Schmuck, M., Althues, H., Schumm, B., & Kaskel, S. (2016). High-power lithium ion batteries based on preorganized necklace type Li4Ti5O12/VACNT nano-composites. Journal of Power Sources, 325, 1-6. https://doi.org/10.1016/j.jpowsour.2016.06.016

MLA:

Pawlitzek, Fabian, et al. "High-power lithium ion batteries based on preorganized necklace type Li4Ti5O12/VACNT nano-composites." Journal of Power Sources 325 (2016): 1-6.

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