Hey, if you can knock back a Mountain Dew to give yourself a boost, why can't your electronic devices go for a sugar high to keep themselves cranking, too?
A very exciting bit of news for those of us who track the rapid developments in the bioeconomy: researchers at Saint Louis University in the U.S. have developed a fuel cell battery that runs on virtually any sugar source - from soft drinks to tree sap - and has the potential to operate three to four times longer on a single charge than conventional lithium ion batteries.The scientists presented their findings at the national meeting of the American Chemical Society. A prototype of the stamp-sized battery runs a calculator, but future applications could include powering computers and recharging cellphones. Tree sap, soda and drink mixes have been used to power the batteries so far.
"This study shows that renewable fuels can be directly employed in batteries at room temperature to lead to more energy-efficient battery technology than metal-based approaches," said study leader Shelley Minteer, an electrochemist at Saint Louis University, in a statement. "It demonstrates that by bridging biology and chemistry, we can build a better battery that's also cleaner for the environment."
Like other fuel cells, the sugar battery contains enzymes that convert fuel - in this case, sugar - into electricity, leaving behind water as a main byproduct. But unlike other fuel cells, all of the materials used to build the sugar battery are biodegradable.
Funding for this study was provided by the U.S. Department of Defense.