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Lithium-ion

Electronics

Recycled Li-ion batteries made with alfalfa seeds and pine resin

Thanks to their high power ratings and relative reliability, lithium-ion (Li-ion) batteries are an efficient and reliable source of power, widely used in modern electronic equipment. On the downside, however, expired Li-ion batteries are also difficult to dispose of, with their potentially toxic content and the complex methods required for their recycling. Researchers at Uppsala University’s Ångström Laboratory think that they may have a solution: combine the salvaged remnants of a Li-ion battery with completely organic materials derived from alfalfa and pine resin, to create a recycled biomaterial Li-ion hybrid battery. Read More

Energy

Add salt to significantly extend the life of lithium-based batteries

Salt has long been used to preserve meat, and now researchers at Cornell University have found that adding certain salts to the anodes of lithium-based batteries can also increase their useful life by a very large factor, solving long-standing problems associated with cell degradation. The advance can be adapted to other metal-based chemistries, including the lighter and more energy dense lithium-sulfur cells and, according to the researchers, might see commercial applications in as little as three years.Read More

Automotive

Tesla and Panasonic sign agreement on battery-making Gigafactory

If electric vehicles are to ultimately become as popular as Tesla hopes they will, then a whole lot of cost-effective batteries are going to be needed. That's why earlier this year, the automaker proposed a "Gigafactory" where it could crank out huge quantities of batteries. By making so many, it could drive down the price per battery via economy of scale. Yesterday, the company announced that it and Panasonic had signed an agreement to build that factory. Read More

Electronics

Sand-based anode triples lithium-ion battery performance

Conventional lithium-ion batteries rely on anodes made of graphite, but it is widely believed that the performance of this material has reached its zenith, prompting researchers to look at possible replacements. Much of the focus has been on nanoscale silicon, but it remains difficult to produce in large quantities and usually degrades quickly. Researchers at the University of California, Riverside have overcome these problems by developing a lithium-ion battery anode using sand.Read More

Electronics

New li-ion battery anode could charge electronics in minutes

Researchers at the University of California, Riverside have developed a silicon anode that would allow us to charge lithium-ion batteries up to 16 times faster than is currently possible. The new design relies on a three-dimensional, cone-shaped cluster of carbon nanotubes that could also result in batteries that hold about 60 percent more charge while being 40 percent lighter. Read More

Electronics

Scientists create weavable Li-ion fiber battery yarn

Scientists at the Fudan University in Shanghai, China, have developed a high-performance Li-ion battery made of carbon nanotube fiber yarns. Roughly one 1 mm in diameter, the fiber shaped lithium-ion batteries are reported lightweight enough to create weavable and wearable textile batteries that could power various devices. The researchers say that the yarn is capable of delivering nearly 71 mAh/g of power, and can also be woven into existing textiles to create novel electronic fabrics.Read More

Electronics

Structural supercapacitors could make batteries and power cords obsolete

Imagine using a mobile phone powered entirely by its casing, or an electric car that runs off power stored in its chassis. Researchers at Vanderbilt University have created a structural supercapacitor that could, they believe, bring this closer to reality, making batteries and power cords obsolete. The structural supercapacitor could make it possible to store energy directly in structural materials, allowing them to deliver power long-term while surviving the real-life mechanical stresses they're bound to experience.Read More

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