Indeed, many experts believe that the future of electricity generation will not come from further refinement of solar, wind, coal or nuclear energy, but from fuel cells.

很多专家认为未来的电能不会来自改良后的太阳能、风能、煤炭或核能，而将来自燃料电池。

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Usually fuel cells run on hydrogen, but the aim of the research is to allow factories to recover energy from waste products like whey by converting organic materials directly into electricity.

通常的燃料电池由氢气驱动，但此项研究的目的旨在使得工厂能够直接从废料(例如乳清)中把有机物质转化为电能。

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But while batteries store all the chemicals needed for the necessary chemical reactions in a sealed package, fuel cells use an external fuel source and air from the atmosphere.

电池是在密封容器存贮化学反应必需的化学品，但燃料电池却使用外部燃料和大气。

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The power output is small, orders of magnitude lower than from hydrogen or methanol fuel cells, but the supply and handling of these flammable fuels is avoided.

FORBES: A Fuel Cell That Runs On Air And Water

But government has a long history of encouraging emerging technologies, and that continues, from energy storage to fuel cells.

FORBES: Never Mind Solyndra: Fuel Cell Industry Growing with Government Support

Fuel cells, which are an old technology, certainly work, but they are still some years from commercial viability in cars.

ECONOMIST: Hydrogen-powered cars