Currently, mobile phone batteries are rigid devices that can overheat when bent or broken. Scientists at the Federal Institute of Technology in Zurich have developed a new type of flexible battery. The researchers say the battery can bend, stretch and twist, and still work. For flexible electronics and smartphones, the battery has great potential.
The ability to bend can place the battery inside the entire smartphone, even in the hinge area. The team said that flexible batteries may also be a rational choice for future flexible devices. This flexible thin-film battery prototype can be bent and twisted without interrupting power to the device, one of which is the use of special electrolytes.
Xi Chen, a Ph.D. student at the Federal Institute of Technology in Zurich, discovered this new electrolyte, making it possible to make the entire battery flexible. The battery uses a flexible polymer composite as the anode and cathode. The inner surface has a layer of micronized silver flakes.
These sheets overlap like roof tiles, and the batteries do not lose contact with one another when bent. If the contacts do not lose contact between the sheets, then electricity can still be transferred through the carbon-containing composite. The battery has a water-based gel electrode that uses a high concentration of lithium salt. Researchers say there are many potential applications for this type of battery. An example would be to sew the battery directly onto the fabric.
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