Our cathode in this situation is negative, and our anode is positive. But in voltaic cells, it's reversed. Our cathode is positive and our Amote is negative. And that's because this electron doesn't travel this way like it does in voltaic cells, but it travels this way due to this outside battery source. Another important difference, obviously, is the fact that in electrolytic cells, we have outside battery source. We have an outside power source.