Page 02/23/2016 16:25:35

Arwa's paper in IEEE T-NANO!

At long last, hard work and grit paid off for Arwa – her first lead authored journal paper in IEEE Transactions on Nanotechnology as invited paper!
Free-form Flexible Lithium-Ion Microbattery
Arwa T. Kutbee, Mohamed T. Ghoneim, Sally M. Ahmad, and Muhammad M. Hussain
Abstract—Wearable electronics need miniaturized, safe and flexible power sources. Lithium ion battery is a strong candidate as high performance flexible battery. The development of flexible materials for battery electrodes suffers from the limited material choices. Previously, complexity associated with LIB integration, miniaturization, low yield, low throughput and safety issues have hindered potential for fully flexible lithium ion battery. In this work we have shown an integration strategy for a flexible thin film battery with an anode which serves as same as the current collector, referred to as ‘’Lithium-free’’ LIB. The thin film stack can withstand soldering temperatures (200 oC) and avoids the lithium metal dangers. Such a free-form flexible lithium-free LIB is attractive because it is non-cytotoxic and safe to be implemented in medical applications (including in-vivo and in-vitro) for IoE and wearable electronics. Our device first approach with the complete removal of the sacrificial Si (100) substrate and a newly developed transfer scheme gives a flexible LIB with small size. Additionally, our approach for a flexible battery is advantageous owing to its compatibility with complementary metal oxide semiconductor (CMOS) etching processes, high yield production and ease of handling of fragile flexible samples. The battery showed an enhanced normalized capacity of 146 µAh/cm2 at a rate 130 µA/cm2 (1C).
Way to go!