| AVS 61st International Symposium & Exhibition | |
| Electronic Materials and Processing | Wednesday Sessions |
| Session EM+EN+TF-WeA |
| Session: | Thin Films and Materials for Energy Storage |
| Presenter: | Lawrence Barrett, Brigham Young University |
| Authors: | L. Barrett, Brigham Young University R. Fan, Brigham Young University R.C. Davis, Brigham Young University K. Hinton, Brigham Young University R.R. Vanfleet, Brigham Young University |
| Correspondent: | Click to Email |
Research has shown stable high capacity lithium ion battery anodes can be made from silicon deposited on carbon nanotubes (CNTs). However, rate capability remains a challenge. We have explored two potential limiting factors: diffusion from the top of the forest down and diffusion into the silicon coating. To probe top down diffusion, we compared a uniform CNT forest to a forest with an array 10 um holes spaced 10 um apart to allow channels for faster top down diffusion and found rate capability was unaffected, indicating top down diffusion is not a limiting factor. We also probed diffusion through the silicon coating by changing the thickness and morphology of the coating.