Current Collector Based on Thin Metal Layer for Flexible Lithium-Ion Batteries

Flexible lithium battery is an emerging and promising technology for the next generation of flexible devices in various applications such as rollup displays, smart cards, wireless sensors, and wearable computers. Flexible lithium battery requires a mechanical durability against repeated deformation that commonly occurs in flexible electronic devices.

Current collector of commercial lithium-ion battery is made of metallic foil. Metallic foil current collector often suffers from the generation of gap between electrode material and current collector interface under the bending and folding situation, resulting in capacity loss or poor performance at high rate. Thus, a novel metallic structure of current collector is highly needed to improve the performance of flexible lithium battery.

Here we introduce a novel thin metal layer current collector based on flexible polymeric substrate using RF-magnetron sputtering method.

Acknowledgement

This research was supported by the Converging Research Center Program through the Ministry of Science, ICT and Future Planning, Korea(2013K000288).

 

Reference

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