Chapter 1 · Battery cell foundations
This study guide connects six finished modules into one learning sequence. Follow the parts in order, use the checkpoints to test your understanding, and return to any module when a link is not yet clear.
How to use this chapter
Each part adds one layer of understanding. The two “B” modules deepen the preceding topic without breaking the main sequence.
What is inside a cell? Name the components and trace charge/discharge paths.
How is cell output rated? Connect capacity, current, C-rate, and ideal duration.
How is a cell made? Compare conventional lithium-ion and solid-state production routes.
Why does performance change? Link operating conditions to degradation signals.
Study sequence
For every part: learn the core idea, interact with the model, then answer the checkpoint before moving on.
Interactive browser workbench · Foundation
Identify the electrodes, collectors, separator, and electrolyte, then distinguish the electron path from the lithium-ion path.
Focus: component function and direction conventions.
Checkpoint: Can you explain why electrons use the external circuit while lithium ions move inside the cell?
Interactive browser tutorial · Deeper view
Move from the five-layer stack into porous electrodes, pore electrolyte, solvent molecules, ions, and transport paths.
Builds on: the components and paths from Part 01.
Checkpoint: Can you explain why electrolyte in electrode pores is not a sixth structural layer?
Python API + Jupyter notebook · Quantitative foundation
Calculate current, C-rate, and ideal constant-current duration while keeping exact definitions separate from real cutoff behavior.
Focus: units, proportional reasoning, and model limits.
Checkpoint: Can you calculate the current for a 5 Ah cell at 2C and state why the real runtime may differ?
Binder's first launch may take a few minutes.
Interactive production simulator · Process chain
Follow reference graphite/NMC routes through electrode manufacturing, assembly, formation, aging, grading, and final testing.
Focus: material flow, process windows, and quality dependencies.
Checkpoint: Can you identify one upstream process change that affects a downstream cell-quality signal?
Interactive route-comparison simulator · Deeper view
Compare how oxide, halide, sulfide, and polymer electrolyte choices change the line, atmosphere, interfaces, and process challenges.
Builds on: the production logic from Part 03.
Checkpoint: Can you explain why choosing a solid electrolyte changes the required machines rather than merely replacing one material?
Interactive Jupyter notebook · Chapter synthesis
Connect degradation mechanisms to capacity loss, impedance rise, self-discharge, temperature, and cycling conditions through explicitly illustrative models.
Focus: mechanism, observable signal, and operating condition.
Checkpoint: Can you distinguish capacity fade from impedance rise and name a condition that can accelerate each?
Binder's first launch may take a few minutes.
Chapter checkpoint
Chapter 1 is complete when you can connect structure, rating, production, and aging without treating them as isolated topics.
Trace electron and lithium-ion paths through a cell during charge and discharge.
Use capacity and C-rate to calculate current and ideal duration with correct units.
Compare a conventional lithium-ion route with one solid-state route and explain the changed process steps.
Connect an operating condition to a degradation mechanism and then to an observable performance signal.
Chapter 1 complete
Chapter 2 will build equivalent-circuit models from terminal-voltage conventions and open-circuit voltage through resistance, dynamic RC behavior, parameter identification, and validation.
View the full learning roadmap