Towards a lithium-ion fiber battery

• Main Author: Grena, Benjamin (Benjamin Jean-Baptiste)
• Other Authors: Yoel Fink.
• Format: Others
• Language: English
• Published: Massachusetts Institute of Technology 2015
• Subjects: Materials Science and Engineering.
• Online Access: http://hdl.handle.net/1721.1/93046

Thesis: S.M., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2013. === Cataloged from PDF version of thesis. === Includes bibliographical references (pages 45-47). === One of the key objectives in the realm of flexible electronics and flexible power sources is to achieve large-area, low-cost, scalable production of flexible systems. In this thesis we propose a new Li-ion battery architecture in a fiber form that could be the building block to large-area, conformal, flexible power sources, achieved through fiber thermal drawing. This architecture is based on the key-finding of using thermally induced phase separation as a method to introduce porous structures inside thermally drawn fibers for the very first time. This new versatile process allows us to incorporate ionically conductive gel-polymer electrolytes in fiber cores in a very simple way, with ionic conductivities suitable for a battery application. The rest of our proposed infiber battery architecture is composed of composite electrodes, which we fabricate and characterize. A model system is tested and a detailed pathway towards the first successful fabrication of a Li-ion fiber battery is given. === by Benjamin Grena. === S.M.