US scientists successfully made the world's smallest nano-wire lithium battery

- Jan 11, 2017-

The Center for Integrated Nanotechnology (CINT), jointly formed by Sandia and Los Alamos National Laboratories, has announced that it has made the world's smallest battery under an electron microscope. The anode consists of a nanowire consisting of only one human hair / 7000 thickness.

The cell consists of a tin dioxide nanowire anode with a diameter of 100 nm and a length of 10 microns, a lithium cobalt oxide cathode with a length of 3 mm, and an ionic liquid electrolyte, and is assembled under a projection electron microscope. Researchers will use it to more in-depth understanding of lithium battery in the charge and discharge process of atomic structure changes.

Huang Jianyu, a researcher in charge of the project, said that their ultra-miniaturized battery manufacturing method could stimulate more research on micro-cell manufacturing to gain a more complete understanding of the mechanisms for controlling battery performance and reliability. Lithium-ion batteries based on nanowires in the charge density and energy efficiency will be significantly higher than the existing lithium batteries, the future may allow hybrid cars, laptops, mobile phones and other lithium battery applications benefit.

In the study, they were surprised to find that SnO 2 nanowires were nearly twice as long in the charge process, rather than stretched as much as they had predicted. This discovery will help improve the design of lithium batteries to prevent shortening of battery life caused by internal short circuit.