The ultra-stretchy batteries could be used to monitor brain waves and heart activity.
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Yonggang Huang, of Northwestern University, and John A. Rogers, of the University of Illinois, have developed a stretchable lithium-ion battery. They contend that the stretchable batteries can power flexible electronic devices. The ultra-stretchy batteries could even be used to monitor brain waves and heart activity.
“An important trend in electronics involves the development of materials, mechanical designs and manufacturing strategies that enable the use of unconventional substrates, such as polymer films, metal foils, paper sheets or rubber slabs. The last possibility is particularly challenging because the systems must accommodate not only bending but also stretching. Although several approaches are available for the electronics, a persistent difficulty is in power supplies that have similar mechanical properties, to allow their co-integration with the electronics,” write the researchers in the journal Nature Communications.