The OpenCourseWare Initiative (OCW) has produced many wonderful free course materials on urban planning, philosophy, engineering, and mathematics. This recent offering from MIT's OCW collection presents material from the spring 2011 version of "Electrochemical Energy Systems." Taught by Professor Martin Bazant, the course "introduces principles and mathematical models of electrochemical energy conversion and storage." On this page, visitors can download and peruse the syllabus, read through the course calendar, and take a look at the lecture notes. The notes cover 39 different topics, including statistical thermodynamics, forced convention in fuel cells, and ion concentration polarization. Also, visitors are welcome to look over the problem sets and provide feedback on the course.