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A team of researchers from the US and China have developed novel polymer−graphene nanocomposites as high-rate cathode materials for rechargeable lithium batteries. Compared to the pure polymer, the polymer-graphene nanocomposites possess much higher active material utilization ratios and superior ultrafast-charge and -discharge ability; one of the materials maintained a discharge capacity of 100 mAh/g even at 100 C, when the whole discharge process takes only 16 seconds.     The ...
In a new marketing effort to promote its pure-electric Focus, Ford says it will make history this month, as the battery-powered version of its compact hatchback will become the first all-electric pace car to lead the pack at a NASCAR race.     The new Focus Electric, which rolled off the production line in December at the company's Michigan Assembly Plant, will perform all pace care duties for the NASCAR Sprint Cup Series race at the Richmond International Raceway on April 28.   ...

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