Introduction to stretchable battery
The next frontier in electronics are the flexible, stretchable kind such as stretchable battery. Yes, that meansa rubber, bouncy smartphone , but it also means heart monitors threaded into cardiac tissue. For devices like that to work, they require flexible, stretchable batteries. And such batteries are here, according to researchers who just published their work.
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. Here we introduce a set of materials and design concepts for a rechargeable lithium ion battery technology that exploits thin, low modulus silicone elastomers as substrates, with a segmented design in the active materials, and unusual ‘self-similar’ interconnect structures between them. The result enables reversible levels of stretchability up to 300%, while maintaining capacity densities of ~1.1 mAh cm−2. Stretchable wireless power transmission systems provide the means to charge these types of batteries, without direct physical contact.
DEVELOPMENT OF stretchable battery
The ultra-stretchy battery could be used to power bionic eyes, robotic skins, and other biological implants.Northwestern University have demonstrated the battery that continues to work–powering a commercial light-emitting diode–even when stretched, folded, twisted and mounted on a human elbow. The stretchable battery can deliver power and voltage similar to a conventional lithium-ion battery of the same size, the researchers said, but the flexible battery can stretch up to three times its original size and still function.
the flexible lithium-ion battery completes the flexible electronics package with a cordless power source.
“Batteries are particularly challenging because, unlike electronics, it’s difficult to scale down their dimensions without significantly reducing performance,” Rodgers told BBC News.
“We start with a lot of battery components side by side in a very small space, and we connect them with tightly packed, long wavy lines,” Huang said. “These wires provide the flexibility. When we stretch the battery, the wavy interconnecting lines unfurl, much like yarn unspooling. And we can stretch the device a great deal and still have a working battery.”
The battery can work for eight to nine hours and can then be recharged wirelessly, they said.
In the paper, researchers introduce a set of materials and design concepts for a rechargeable lithium ion battery technology that exploits thin, low modulus silicone elastomers as substrates, with a segmented design in the active materials, and unusual ‘self-similar’ interconnect structures between them. The result enables reversible levels of stretchability up to 300%, while maintaining capacity densities of ~1.1 mAh cm−2. Stretchable wireless power transmission systems provide the means to charge these types of batteries, without direct physical contact.
Renowned for their pioneering work with semiconductor materials and flexible, stretchable electronics, Rogers and his colleagues have applied their expertise to devise technology solutions across such broad fields as solar power, biointegrated electronics, sensing, thin film metrology, and fiber optics. Incorporating battery power into these flexible systems closes the loop that will enable the technology to be used broadly. Initial targets for the technology include medical applications, but there are other applications for bendy batteries such as wearable solar cells and electric-eye cameras that can produce studio-quality photographs.
stretchable battery uses
Stretchable battery that can be recharged wirelessly offer a power source for wearable electronics and health monitors.
Stretchable battery is used for the device device. such as flexible display and the new health care devices such as the the electronic dress etc.so the stretchable battery are the revolutionary research for the electronics .stretchable battery can be used in the device such as stealth suite.stretchable battery are also used in the compress device .The end goal with the stretchable battery is to create wearable sensors to help with athletic performance and health monitoring. These stretchable battery could even be stretched thin enough to be applied inside the body, such as on the surface of the heart. Such applications require a power source, and until now, power sources are generally bulky and rock solid. the researchers at MC10 got that issue was to essentially create a stretchable silicone sheet that has a large array of several smaller lithium ion batteries connected by smaller but extendable cables. The result is a stretchable battery that can expand 300 percent larger than its normal size.