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Bacteria could be a future source of electricity

In recent years, researchers have tried to capture the electrical current that bacteria generate through metabolism. So far, however, the transfer of current from the bacteria to a receiving electrode has been highly inefficient. ...

New class of solar cells, using lead-free perovskite materials

Lead-based perovskites are promising materials for low-cost and high-efficiency solar cells. However, the intrinsic instability and the toxicity of lead (Pb) have raised serious concerns of the viability of Pb-based perovskites, ...

Shining light on recombination mechanisms in solar cell materials

Hybrid perovskites are spectacularly efficient materials for photovoltaics. Just a few years after the first solar cells were fabricated, they have already achieved solar conversion efficiencies greater than 22 percent. Interestingly, ...

Pushing lithium ion batteries to the next performance level

Conventional lithium ion batteries, such as those widely used in smartphones and notebooks, have reached performance limits. Materials chemist Freddy Kleitz from the Faculty of Chemistry of the University of Vienna and international ...

Noble metal-free catalyst system as active as platinum

Industry uses platinum alloys as catalysts for oxygen reduction, essential in fuel cells and metal-air batteries, among other applications. Expensive and rare, that metal imposes tight restrictions on manufacture. Researchers ...

Catalyst advance could lead to economical fuel cells

Researchers at Washington State University have developed a new way to make low-cost, single-atom catalysts for fuel cells—an advance that could make important clean energy technology more economically viable.

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