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Ultra‐Lightweight, High Power Density Lithium‐Ion Batteries
Author(s) -
Duduta Mihai,
de Rivaz Sebastien,
Clarke David R.,
Wood Robert J.
Publication year - 2018
Publication title -
batteries and supercaps
Language(s) - English
Resource type - Journals
ISSN - 2566-6223
DOI - 10.1002/batt.201800030
Subject(s) - battery (electricity) , power density , power (physics) , materials science , electrical engineering , fabrication , process (computing) , limit (mathematics) , high voltage , lithium (medication) , voltage , computer science , engineering , medicine , mathematical analysis , physics , alternative medicine , mathematics , pathology , quantum mechanics , endocrinology , operating system
Current fabrication methods for lithium‐ion batteries impose a limit on how light a high power battery can be made. The lack of lightweight (<300 mg), high power batteries is a significant constraint to the development of untethered micro‐robots, wearable haptics, mobile computing, and biomedical applications. We have developed a laser micro‐machining and assembly process which can produce batteries up to 30 times lighter than the lightest high power commercial cell, at comparable power densities (>1 kW/kg). Our process is versatile and can be adapted to make custom geometries, miniature high voltage cells, and more, all while using a broad range of starting materials. We see this technology as a path to highly versatile miniature power sources, that will enable a wide range of small‐scale applications.