Recently, Mr. Jianyu Huang and his research term in U.S Sandia National Laboratory declared that they succeeded in developing world's smallest lithium battery.
Online PR News – 12-December-2011 – – Recently, Mr. Jianyu Huang and his research term in U.S Sandia National Laboratory declared that they succeeded in developing world's smallest lithium battery. This rechargeable battery is made under a projection electron microscope in Center for Intergrated Nano Technology (CINT).
Anode of this nano battery is made up of tin dioxide nanowire with 100nm diameter and 10μm length, 1/7000 thickness of a hair. Also this battery consists of 3mm-length lithium colbat oxide cathode and ion liquid electrolyte. Projection electron microscope has finished assembly of this battery.
In the beginning, researchers hoped to use it to further comprehend atom structure change of lithium battery in the charge& discharge process, and seek ways on how to improve output capacity and energy density on li-ion batteries. However, unexpectedly, during research they discovered length of tin dioxide nanowire under charge almostly stretched by one time rather than expected width stretch. This discovery could help improve lithium battery design and prevent occurance of internal short circuit that shortens battery lifetime.
Jianyu Huang, host of this research project, said manufacture method of ultra-mini battery they developed could motivate more research on micro battery manufacture, so that people could more comprehensively understand mechanism that control battery performance and reliablity. Nanowire-based lithium-ion battery could be a substantial upgrade on charge density and efficience. In future, hybrid vehicle, laptop, cell phone and other products that use lithium battery could benefit from it.