Mr. Ruben A. Salgado Profile

Ruben A. Salgado

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Proceedings Article | 26 October 2016 Paper

Carbon nanotube: nanodiamond Li-ion battery cathodes with increased thermal conductivity

Ruben Salgado, Eungiee Lee, Elena Shevchenko, Alexander Balandin

Proceedings Volume 9932, 993204 (2016) https://doi.org/10.1117/12.2238345

KEYWORDS: Carbon nanotubes, Electrodes, Thermal effects, Carbon, Particles, Diamond, Magnesium, Sensors, Aluminum, Lamps

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Prevention of excess heat accumulation within the Li-ion battery cells is a critical design consideration for electronic and photonic device applications. Many existing approaches for heat removal from batteries increase substantially the complexity and overall weight of the battery. Some of us have previously shown a possibility of effective passive thermal management of Li-ion batteries via improvement of thermal conductivity of cathode and anode material¹. In this presentation, we report the results of our investigation of the thermal conductivity of various Li-ion cathodes with incorporated carbon nanotubes and nanodiamonds in different layered structures. The cathodes were synthesized using the filtration method, which can be utilized for synthesis of commercial electrode-active materials. The thermal measurements were conducted with the "laser flash" technique. It has been established that the cathode with the carbon nanotubes-LiCo2 and carbon nanotube layered structure possesses the highest in-plane thermal conductivity of ~ 206 W/mK at room temperature. The cathode containing nanodiamonds on carbon nanotubes structure revealed one of the highest cross-plane thermal conductivity values. The in-plane thermal conductivity is up to two orders-of-magnitude greater than that in conventional cathodes based on amorphous carbon. The obtained results demonstrate a potential of carbon nanotube incorporation in cathode materials for the effective thermal management of Li-ion high-powered density batteries.

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