Title | First-Principles Prediction of Potentials and Space-Charge Layers in All-Solid-State Batteries |
Publication Type | Journal Article |
Year of Publication | 2019 |
Authors | Swift, MW, Qi, Y |
Journal | Phys. Rev. Lett. |
Volume | 122 |
Pagination | 167701 |
Date Published | Apr |
Abstract | As all-solid-state batteries (SSBs) develop as an alternative to traditional cells, a thorough theoretical understanding of driving forces behind battery operation is needed. We present a fully first-principles-informed model of potential profiles in SSBs and apply the model to the Li/LiPON/LixCoO2 system. The model predicts interfacial potential drops driven by both electron transfer and Li+ space-charge layers that vary with the SSB’s state of charge. The results suggest a lower electronic ionization potential in the solid electrolyte favors Li+ transport, leading to higher discharge power. |
URL | https://link.aps.org/doi/10.1103/PhysRevLett.122.167701 |
DOI | 10.1103/PhysRevLett.122.167701 |