Traditional fuel cells work by using a catalytic material to oxidise a fuel, such as hydrogen, turning it into a positively charged ion and a negative electron.

传统的燃料电池使用催化材料来氧化燃料，比如氢气，使之转变为一个带正电的离子与一个电子。

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If one or more electrons are removed the remaining positively charged structure is called a positive ion.

如果移去一个或多个电子，剩下来带正电荷的结构就称为正离子。

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If one or more electrons are removed, the remaining positively charged structure is called a positive ion.

如果移去一个或多个电子，剩下来带正电荷的结构就称为正离子。

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The theory is that when a muon encounters a gas molecule, it can knock off an electron, leaving a positively charged ion in its wake.

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If you zap purified water with electric current, you can split apart a water molecule into a positively charged hydrogen ion and a negatively charged hydroxide ion (oxygen attached to hydrogen).

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