Fuel cell demo S.J.T.U. Phase Transformation and Applications United technologies company /UTC Introduction\fc video 4.avi The fuel cell is composed of an anode (a negative electrode that repels electrons),an electrolyte in the center,and a cathode (a positive electrode that attracts electrons). SJTU Thermodynamics of Materials Spring2008©X.J.Jin Lecture 9 electrochemistry IPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Lecture 9 electrochemistry I Fuel cell demo • United technologies company / UTC Introduction\fc_video_4.avi The fuel cell is composed of an anode (a negative electrode that repels electrons), an electrolyte in the center, and a cathode (a positive electrode that attracts electrons)