Decision time? Check out our latest product comparisons

Batteries

Drexel University research combining the best features of batteries and supercapacitors co...

Researchers at Drexel University are developing an electrochemical flow capacitor (EFC) that combines the storage capabilities of batteries with the much longer cycle life and power output of supercapacitors. The team's goal is to improve the stability of the energy grid and ease the integration of renewable energy sources.  Read More

A sample of Fraunhofer's CryoSolplus phase-change battery coolant

One of the big enemies of electric vehicle batteries is heat. Batteries already warm up under normal use, but when hot summer temperatures or high workloads are thrown in, overheating becomes a real possibility. According to the Fraunhofer Institute for Environmental, Safety and Energy Technology, running a battery at ten degrees over its maximum “comfort level” of about 35ºC (95ºF) can deplete its service life by half. That’s why researchers there have developed a battery coolant known as CryoSolplus, which is said to offer three times the cooling capacity of plain water.  Read More

Thomas Edison with his nickel-iron rechargeable battery in 1910 (Photo: Smithsonian)

A green, rechargeable battery that is suitable for powering electric vehicles and stationary power storage applications, and that would survive tens of thousands of charge cycles in a useful life of 100 years without loss of capacity. What could be a better innovation for our times? Such a battery has been developed, and recently improved by Stanford researchers. Oh, one other thing. The battery was invented by Thomas Edison in 1901.  Read More

The researchers used a standard T-shirt purchased from a local discount store for their wo...

As manufacturers of smartphones and mobile devices strive to make their products increasingly portable, they repeatedly come up against the constraints of existing battery technology. However, Xiaodong Li, a professor at the University of South Carolina (USC) believes that we will soon be able to employ the clothes we wear to help overcome such challenges and to this end, Li has transformed T-shirt material into an energy storage medium which could one day be used to power portable devices.  Read More

La Jamais Contente

Despite the coming of the electric vehicle during the last decade, there were far more electric vehicle manufacturers in the world 100 years ago than there are today. Hundreds of manufacturers, a large proportion of them electric, competed in the fledgling automotive marketplace. This competition drove these manufacturers to seek new and novel ways to seek publicity, and when a French Automobile magazine ran top speed trials in December 1898, it sparked a flurry of record attempts and six land speed records in just four months. The electric Jamais Contente, which was the first purpose-built speed record attempt car, prevailed in this early tussle by raising the land speed record to 105.878 km/h (65.79 mph) in April 1899.  Read More

Tin anode creator Prof. Grant Norton and student, David Mackay

For over 60 years, electrical engineers have been trying to minimize the problem of tin whiskers. Growing on tin-plated electronics, the needle-like structures get up to ten millimeters long, and can cause short circuits. Instead of trying to eliminate them, however, Washington State University’s Prof. Grant Norton has been looking into ways of growing them – albeit in a controlled manner. His research has led to the creation of a tin battery anode, which he claims could triple the capacity of lithium-ion batteries.  Read More

A nanowire sporting tendrils of nanoparticles, which greatly add to its surface area

Higher-density batteries, more efficient thin-film solar cells, and better catalysts may all soon be possible, thanks to a new technique that allows nanowires to be “decorated” with nanoparticles. Using the novel technology, scientists from Stanford University have been able to festoon the outside surfaces of nanowires with intricate chains of metal oxide or noble metal nanoparticles, thereby drastically boosting the effective surface area of the nanowires. Other researchers have previously tried to achieve the same end result, but apparently never with such success.  Read More

IBM's lithium-air battery uses oxygen from the air to react with lithium ions and generate...

One of the main challenges faced by the Electric Vehicle (EV) industry is so-called “range anxiety.” Current lithium-ion batteries will provide a range of about 100 miles (161 km), limiting the commercial adoption of EVs in a market accustomed to the range and supporting infrastructure of gasoline-powered vehicles. If existing lithium-ion batteries were scaled up to match the range capacity of gas-powered vehicles, they would be unfeasibly large and heavy. Lithium-air batteries, which have the potential to provide energy densities that rivals traditional gasoline-powered engines, are seen as a possible solution. IBM has been researching such batteries and recently announced that it's bringing two companies with experience in electric vehicle materials onboard to aid in their development.  Read More

Scientists have created a rechargeable battery using the lignin from pulp and paper mills

Scientists have discovered that lignin, a plentiful byproduct of the pulp and paper industry, can be used to store an electrical charge. They've used the material to create a prototype lignin-based rechargeable battery, and suggest that it could one day be used as a less expensive, safer alternative to the precious metals currently utilized in battery cathodes.  Read More

Sandberg's BatteryCase is a case for iPhone 4 and iPhone 4S packs impressive specs into a ...

Sandberg's BatteryCase is the latest in a long line of iPhone battery cases that claim to double the life of an iPhone - in this case the iPhone 4, though as you'd expect the case is also compatible with the iPhone 4S. In case you're not familiar with how these things work, there's no mystery: it's simply an iPhone case with an integrated battery. But how does it stack up against two of the market leaders, Mophie's juice pack and juice pack plus?  Read More

Looking for something? Search our 29,163 articles