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Published on May 15, 2014
Table of Contents: 00:09 Lecture 5.4: Porous Electrode Theory 00:26 Equations of Continuity 03:04 Fluxes and Driving Forces 05:13 Fluxes and Conjugate Forces 06:15 Onsager's Symmetry Principle 06:53 Interdiffusion of Charged Species 09:24 Electrical and Ionic Conductivity 11:36 LiCoO2 12:43 Electrolyte Conductivity 16:38 The Difficulty of Putting Everything Together 19:30 Porous Electrochemical Kinetics 20:58 Modified Kinetic Equations 21:45 Modified Kinetic Equations 22:01 Modified Kinetic Equations 23:28 Porous Electrochemical Kinetics 24:16 Boundary Conditions 26:30 The Half Cell 27:20 Porous Electrode Theory Assumptions 29:11 Lithium Distribution in Electrolyte 29:55 Lithium Distribution in Electrolyte 30:15 Diffusion Ratio 30:27 Lithium Distribution in Graphite Particle 30:53 Lithium Distribution in Graphite Particle 31:25 Voltage-Capacity Response 33:08 Effect of Initial Concentration
This course will provide an introduction to the fundamentals behind the equilibrium and time-dependent response of existing and emerging chemistries of Li-ion battery materials. Effects of material selection and processing on the performance and reliability are presented as a means to develop conceptual guidelines to understand and improve battery designs. Example applications such as intercalation, SEI, and dendrite growth are presented. Integration of experimental microstructural aspects to coarse-graining measured properties, such as porosity, tortuosity and its associated reactivity, and classic and emerging battery architectures are presented. Principles summarizing the response of battery architectures are formulated and applied to propose battery design guidelines, to review existing porous electrode theory descriptions, and to summarize the current state-of-the-art of battery technology and its associated metrology.