Crystal Model Li-Ion Layered Oxide Battery Cathode
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This is a ball-model of the crystal structure of layered oxide battery cathode material.
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Model information
- Source
- Printables
- Category
- Chemistry & Biology
- License
- Creative Commons — Public Domain
The sphere radii come from the Wikipedia page for ionic radii: Li+, Ni/Co 3+, O2-.
There are two versions of the model: 1 is a single hexagonal unit cell, as a complete unit cell (for a multi-color print) or as individual spheres and a lattice with assembly jigs (multiple, single-color prints); 2 is an assembly tray upon which individual spheres with cutouts can be stacked for gluing. This version allows for visualization of lattice defects (like Li vacancy, Li-TM cation mixing), visualization of similar crystals like the monoclinic structure with ordered Li on the TM layer (as in my photo), or for stacking to larger repeat units. If you choose not to glue the Li in place, it is fun to shift this across an oxygen plane to feel how the Li hops through tetrahedral interstitial sites when it diffuses.