Virus battery could power cars, electronic devices

by frog

Scientists at MIT have built a lithium-ion battery using a genetically modified virus to assemble both the anode and the cathode of a battery.

Three years ago, an MIT team led by Belcher reported that it had engineered viruses that could build an anode by coating themselves with cobalt oxide and gold and self-assembling to form a nanowire.

In the latest work, the team focused on building a highly powerful cathode to pair up with the anode, said Belcher, the Germeshausen Professor of Materials Science and Engineering and Biological Engineering. Cathodes are more difficult to build than anodes because they must be highly conducting to be a fast electrode, however, most candidate materials for cathodes are highly insulating (non-conductive).

Now that the researchers have demonstrated they can wire virus batteries at the nanoscale, they intend to pursue even better batteries using materials with higher voltage and capacitance, such as manganese phosphate and nickel phosphate, said Belcher. Once that next generation is ready, the technology could go into commercial production, she said.

This is truly cool stuff. Cracking the energy storage limitations on any front increases our chances of weaning transport from its oil addiction, oil being such a light, convenient and energy dense carrier of sunlight.

As a culture we are still in denial about our profligate waste of all the ancient sunlight we burn just to pop out to the dairy for a pint of milk. Some day soon, probably within our lifetimes, we’ll need to start living within our means – namely within our solar budget.

While this sounds difficult, with a bit of lateral thinking we can develop the clean technologies that allow us to do it easily. The only obstacle is the backwards looking nature of our leadership, particularly in New Zealand.

Our government has chopped off all the research dollars and the tax breaks for research and development, while claiming that they stand for improved productivity. The sooner we’re free of these Luddites, the better.

As for the genetically modified virus, as long as it stays in the lab, I personally don’t have a problem with it. It’s only when we think we’re smarter than millions of years of evolution and turn our creations loose in nature that I think our hubris will be our undoing.

That’s what I would like this thread to be about – an open debate about the advances we can make with our technologies and the lines we have to draw to protect the natural systems that sustains us.

frog says

Published in Environment & Resource Management by frog on Mon, April 6th, 2009   

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