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— Science

Smartphone batteries used to determine weather conditions

Smartphone batteries contain tiny temperature sensors, designed to keep the phone from overheating. While those sensors do measure the heat generated within the phone, their readings are also affected by the temperature of the phone’s external environment. With that in mind, British app developer OpenSignal has created a system that allows multiple users’ phones to provide real-time, location-specific weather reports. Read More
— Environment

Wood nanobattery could be green option for large-scale energy storage

Li-ion batteries may be ok for your smartphone, but when it comes to large-scale energy storage, the priorities suddenly shift from compactness and cycling performance (at which Li-ion batteries excel) to low cost and environmental feasibility (in which Li-ion batteries still have much room for improvement). A new "wood battery" could allow the emerging sodium-ion battery technology to fit the bill as a long-lasting, efficient and environmentally friendly battery for large-scale energy storage. Read More
— 3D Printing

Scientists create lithium-ion batteries the size of a grain of sand

While we’re currently witnessing the rise of tiny electronic devices such as biosensors, many of those devices do have one limiting factor – they still require not-so-tiny batteries, which ends up somewhat defeating the whole miniaturization process. Although some devices can get their power from external sources, scientists from Harvard University and the University of Illinois at Urbana-Champaign have come up with an alternative ... functional 3D-printed lithium-ion batteries no larger than a grain of sand. Read More
— Military

US Army's new portable charger brings power to soldiers in the field

Portable electronic devices have revolutionized warfare, but they've also burdened the soldiers with an increasing number of batteries that adds significantly to their load. To help lighten the load, the US Army Research, Development and Engineering Command's communications-electronics center (CERDEC) has developed a military-grade Universal Battery Charger (UBC) to help soldiers in the field keep their electronics powered up. Read More
— Science

New microbatteries combine the advantages of lithium-ion batteries and supercapacitors

There can be little doubt that people love their mobile devices. But, by leaving them high and dry at the most inconvenient of times, this love generally doesn't extend to the batteries that power said devices. New microbatteries developed by researchers at the University of Illinois at Urbana-Champaign (UIUC) that measure just a few millimeters in size, yet are powerful enough to power a mobile phone may be more likely to inspire a little love. Read More