3D printable battery for next generation wearable electronics devices

Time 2018-11-08 10:00~10:25 Place Rm.600A
Code No. DP-O05 Session Chair
Name Prof. Hui Ying Yang
Affiliation Singapore University of Technology and Design
Title 3D printable battery for next generation wearable electronics devices
Contents
One of the greatest challenges besetting the development of Li ion battery technologies these days is the difficulty of fast charging, which is even more difficult to maintain a high energy density within a flexible and compact design. An energy dense battery within a small, confined space runs a higher risk of explosion due to volumetric expansions within the anode material, which is traditionally graphite. However, given the strong demand for electric vehicles and wearable electronics, it is crucial that we surmount this challenge. 3D printable energy storage devices have attracted significant research attention owing to their unique device design and lower cost in contrast to the conventional manufacturing method. We have designed new generation of carbon-based printing ink for 3D printable lithium ion batteries. To realize high energy and power densities, various electrode designs need to be applied to increase surface area and reduce the weight for the current collector and electrode. The 3D printable electrode materials is an electrode manufacturing process to provide high density pores and channels to allow Li ion to transport. In addition, in an ideal battery system, improved safety function is also an important factor to be considered. A battery shutdown function has been integrated to the 3D printing process. We have also evaluated candidate materials for the battery components and create processes to formulate inks to enable their printing by direct-write extrusion or droplet processes.