/u/cordis_melum's posts in /r/askscience

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Why does carbon make a good electrode?

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I understand that electricity moves from higher potential to a lower potential. Theoretically, it shouldn't matter how the batteries are positioned, so long as there is a potential gradient. So why is it that devices don't work if I insert the batteries the wrong way?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why does carbon make a good electrode?	3
I understand that electricity moves from higher potential to a lower potential. Theoretically, it shouldn't matter how the batteries are positioned, so long as there is a potential gradient. So why is it that devices don't work if I insert the batteries the wrong way?	2