这来源于在电池中，正离子是被减少的。

It comes from the fact that in an electrochemical cell, the cations are those that are reduced.

youdao

在电池里，带电粒子穿过电解液。

In batteries, charged particles travel through electrolytes.

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把阳光产生的电力存储在电池中价格高昂而且效率低下。

Storing solar-made electricity in batteries can be expensive and inefficient.

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It comes from the fact that in an electrochemical cell, the cations are those that are reduced.

这来源于在电池中，正离子是被减少的。

麻省理工公开课 - 固态化学导论课程节选

So, this is what goes on in an electrolysis cell, and it works thanks to input energy from a power supply shown here.

所以，这是在一个电化学电池中发生的，它是靠输入的能量工作的,从和这个类似的电源输出的能量。

麻省理工公开课 - 固态化学导论课程节选

That's not because previously--we had a CD inside of it, we had some batteries.

那并不是因为我们之前在里面放了一张CD,装上了电池

耶鲁公开课 - 死亡课程节选