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Graphene


— Electronics

Zap&Go portable charger fuels up in just 5 minutes

By - October 14, 2014 4 Pictures
An Oxford-based startup has turned to crowdfunding to help develop Zap&Go, a phone charger with an emphasis on speed and portability. Thanks to a graphene supercapacitor and an ad-hoc power supply, the device will reportedly charge to its 1,500-mAh capacity – enough to fully charge an iPhone 5s – in only five minutes and promises to be a much more practical solution than current alternatives, particularly when traveling. Read More
— Science

"Nanograss" boosts the efficiency of organic solar cells

By - October 13, 2014 4 Pictures
Researchers at the University of Massachusetts Amherst, Stanford University and the Dresden University of Technology have developed a long sought-after nanostructure that can significantly increase the efficiency of organic solar cells. Their "nanograss," a dense array of vertical nanopillars, can capture photons at a very high efficiency and could also lead to cheaper and more advanced 3D transistors, photodetectors and charge storage devices. Read More
— Science

Hemp-derived carbon nanosheets help build cheap, high-performance supercapacitors

By - August 20, 2014 1 Picture
Using waste hemp fibers as the starting material, researchers at the University of Alberta in Canada have developed a high-performance electrode material for supercapacitors at one thousandth the cost of the more commonly used graphene. The advance could lead to supercapacitors that are both cheaper and able to operate under harsh environmental conditions. Read More
— Science

Polymer-based graphene substitute is easy to mass-produce

By - July 4, 2014 2 Pictures
For all the attention graphene gets thanks to its impressive list of properties, how many of us have actually encountered it in anything other than its raw graphite form? Show of hands. No-one? That's because it is still difficult to mass-produce without introducing defects. Now a team at the Korea Institute of Science and Technology (KIST) has developed a graphene substitute from plastic that offers the benefits of graphene for use in solar cells and semiconductor chips, but is easy to mass-produce. Read More
— Science

Scientists create "spray-on graphene"

By - May 29, 2014 1 Picture
Despite its many desirable qualities and potential applications, graphene still isn't as widely used as it could be for one main reason – it's difficult to apply to surfaces, particularly large ones. Attempting to do so often causes damage to the graphene, or otherwise results in a non-uniform, flawed coating. Now, however, scientists have devised a method of simply spraying the stuff on, that actually improves the graphene in the process. Read More
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