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Researchers developed a completely stretchy lithium-ion battery, including an electrolyte layer that can expand by 5000%, and it retains its charge storage capacity after nearly 70 cycles
Fully stretchable lithium-ion batteries that flex and move are a promising step towards powering wearable or implantable devices.
Now, researchers in ACS Energy Letters report a lithium-ion battery with entirely stretchable components, including an electrolyte layer that can expand by 5000%, and it retains its charge storage capacity after nearly 70 charge/discharge cycles. To make the electrodes for the fully elastic battery, the team spread a thin film of conductive paste containing silver nanowires, carbon black and lithium-based cathode or anode materials onto a plate. When comparing the solid stretchy battery design to a similar device with a traditional liquid electrolyte, the new version had about six times higher average charge capacity at a fast-charging rate.
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