Artificial 'leaf' could beat real plants at converting sunlight

Engadget 

Natural photosynthesis is considered a good target for solar energy conversion, but it's already considered old hat. Harvard scientists have developed a leaf-like system that should be more effective at converting solar energy than plants themselves. The technology boils down to a jar of bacteria (Ralstonia eutropha), a cobalt water-splitting system and a pair of electrodes. When you send electricity through this partly biological system, the electrodes turn the water into hydrogen gas that you can use for fuel and carbon-based materials. It's only 10 percent efficient, but that's better than the widely established 8 percent baseline for real-world performance.

  Industry: Energy > Renewable > Solar (0.72)

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