This is a really interesting idea for a science project, but I need more information about what you are thinking about doing. Goldenzenith has given you some good suggestions for starting on this project. I have some additional questions:
Are you planning to do this project?http://www.sciencebuddies.org/science-f ... p053.shtml
Electrolytes are ionic elements like sodium, potassium, and chloride that can be measured by a multimeter. These ions are very stable and would not degrade due to temperature. If you boiled the liquid until it evaporated, the electrolytes would be visible as a dry powder, but the ions would not be changed chemically. Temperature alone would not decompose the electrolytes.
Electrolysis involves using electrical current to decompose a molecule. For example, in this project on the Science Buddies website, electrolysis is used to convert water to hydrogen gas in a fuel cell.http://www.sciencebuddies.org/science-f ... p053.shtml
Please let us know what type of project you want to do.