Using Chemical Reactions to Produce Electricity: Cells and Batteries

The video explains how chemical reactions can be used to produce electricity, starting with cells and batteries. It describes how a simple cell is made by connecting two different metals with an electrolyte and explains how the potential difference produced is dependent on the difference in reactivities between the metals. The video then discusses the hydrogen fuel cell which uses the electrochemical oxidation of hydrogen to produce a potential difference. The video concludes by stating that research is being done into fuel cells as they can be a good source of energy with the only waste product being water.