Introduction to Conductivity of Composites in Electrochemical Systems

Designing efficient energy storage and conversion technologies requires a deep understanding of how electrical and ionic currents flow through mixed materials. This course provides a clear, structured introduction to the transport properties of heterogeneous materials, focusing on how conductive pathways form in electrochemical systems. You will learn how to analyze and predict the electrical performance of composite electrodes and electrolytes used in modern energy devices. By completing this text-only program, you will transition from understanding basic materials science to modeling complex transport phenomena in multi-phase systems, enabling you to make informed decisions when designing electrochemical components. What you'll learn: - Understand the core physical principles of electrical and ionic conductivity in solid and liquid phases - Analyze percolation theory to predict when an insulating matrix becomes conductive - Apply mathematical models like effective medium theory to estimate composite conductivity - Evaluate the impact of particle shape, size distribution, and volume fraction on network formation - Explore modern applications of composite conductors in lithium-ion batteries and fuel cell electrodes - Practice calculating transport limitations and ohmic losses using structured analytical formulas This course begins with essential terminology and the foundational physics of charge transport before moving into structural modeling, percolation limits, and practical design scenarios. You will study written explanations, step-by-step derivations, and concrete calculation examples that build your analytical skills. This course is designed for engineering students, materials researchers, and clean energy enthusiasts who are new to electrochemical transport phenomena. No advanced background in electrochemistry is required, though a basic understanding of general physics and calculus is recommended. Start mastering the transport properties of composite materials to design the next generation of energy storage systems.