Researchers Create Extremely Small Battery With 3D-Printer
Researchers have succeeded in creating a battery of less than a millimeter wide with the use of a 3D-printer. The battery has the same energy density as the batteries found in smartphones.
The research was done at Harvard University. Yesterday the research team published a movie online detailing the printing process.
A super small battery as created by the researchers of Hardvard University could be used by tiny robots or electronic implants. Also new forms of wearable electronics that require a small battery and large energy density could benefit of the recent findings.
The tiny one millimeter battery consists of two parts, which seem similar to a comb. The teeth of the two combs are put together. The parts thereby function as electrodes that conduct the electricity.
The combs are made of a special type of pasta that is able to be used by 3D-printers, the special pasta solidifies directly ones it is printed. The 3D-printer that was used to create the battery was able to create lines of 30 micrometer wide (or 0,03 millimeter). According to the researchers the entire battery is less than one millimeter wide.
Other super small batteries are now being made with the use of a type of membranes, but because these membranes are extremely thin their energy density is low. The 3D-printed batteries are a small type of lithium-ion batteries, these type of batteries are able to be used in current generation smartphones and tablets.
The researchers told to Engadget that the batteries are similar to commercial batteries in terms of charging, energy density and battery life, but only in a super small form.