Lithium-ion battery the size of a grain of sand – the future of nanoelectronics




Lithium-ion battery the size of a grain of sand – the future of nanoelectronics

sand grain microbatteries

Over the past few years, the trend of miniaturization of electronic devices. A striking example of this is a lot of biological sensors . However, at the moment there is a big enough problem – the power subsystem. Despite the many developments , the evolution of the market of batteries did not happen for a long time. Batteries are still big and heavy, not to mention their lack of capacity. A group of scientists from Harvard University and the University of Illinois is being able to solve one of the problems: they have created the world’s smallest lithium-ion rechargeable battery the size of a grain of sand.

Such small size, it has been achieved through the use of three-dimensional nanoimprint technology. The anodes and cathodes are made of two types of special electrochemically active ink nanoprintera extruded through a nozzle having a diameter less than the diameter of a human hair. Ink used to create anodes contain nanoparticles of lithium metal oxide, while the nanoparticles of the compound present in the ink used for the manufacture of cathodes.


Both components were created by applying successive layers of ink bystrozatverdevayuschih. As a result of the anodes and cathodes without contact are located facing each other (as the two comb teeth). This structure was enclosed in a protective capsule of a polymeric material, the inner cavity is filled with a liquid electrolyte solution.

After a series of tests, scientists have found capacity, while a full charge-discharge and other characteristics nanoakkumulyatora. The researchers said that “the electrochemical characteristics of these batteries are comparable to the properties of the images of commercial lithium-ion batteries in terms of the time of the charge-discharge cycle life and the amount of stored energy.”

Previously, the power of miniature electronic devices used in thin-film batteries. According to Professor Jennifer Lewis of Harvard University, established by them with the help of technology 3D-printing thin-film batteries outperform counterparts on several parameters.
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Tags: 3D-printing , Batteries .

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