nanoHUB-U Rechargeable Batteries L5.4: Architectures & Design Guidelines - Porous Electrode Theory





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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 video is part of the nanoHUB-U course "Introduction to the Materials Science of Rechargeable Batteries" (http://nanohub.org/courses/imsb)

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.


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