High-power lithium ion batteries based on preorganized necklace type Li4Ti5O12/VACNT nano-composites
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
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.
Details
Original language | English |
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Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | Journal of power sources |
Volume | 325 |
Publication status | Published - 1 Sept 2016 |
Peer-reviewed | Yes |
Keywords
Sustainable Development Goals
ASJC Scopus subject areas
Keywords
- High-power lithium ion batteries, LiTiO (LTO), Nano-composite, Nanotube array, Vertically aligned carbon nanotubes (VACNT)