Abstract: Electrochemistry, an old branch of science, has a long and glorious history. It has become again an exciting and vibrant research field. Recently, tremendous attentions have been paid on electrochemcistry because of its close relevance to energy and environment related issues that have caused wide public concerns and received attentions from many governments. Many important energy systems and devices, including energy conversion and storage, as well as solar energy utilization, involve electrochemical processes that traditionally fall into the research themes of electrochemistry.