Fiber batteries are millimeter-thin batteries based on fibers that can be woven into items of clothing or used to create highly flexible, wearable electronics. In recent years, many research teams worldwide have been trying to fabricate these batteries, using a range of different techniques and approaches.
Most existing techniques for creating fiber batteries entail layer-by-layer coating processes that were adapted from the fabrication of planar batteries, a flat and thin battery technology. Despite their advantages, these processes typically enable the creation of a limited number of batteries at a time, thus they are unsuited for large-scale production.
Researchers at Fudan University in China have recently introduced an alternative method for manufacturing fiber batteries that could be easier to implement on an industrial scale. This method, introduced in a paper published in Nature Nanotechnology, is based on a general, solution-extrusion technique that can produce batches of several fiber batteries in a single step.
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