In situ lithiation of TiS2 enabled by spontaneous decomposition of Li3N |
| |
| Authors: | Tom A YersakJames E Trevey Se-Hee Lee |
| |
| Affiliation: | Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, CO 80309-0427, USA |
| |
| Abstract: | We report on a novel method for in situ lithiation of lithium free TiS2 using Li3N in an all-solid-state battery configuration. This method was tested using a Li3N-TiS2-80Li2S:20P2S5 composite positive electrode and an indium metal negative electrode. It is shown that approximately 37% of Li3N spontaneously decomposes during composite preparation regardless of the composition. Solid-state battery cells built with a 3:1 stoichiometric ratio of Li:Ti demonstrated a high 1st cycle charge capacity of 287 mAh g−1, 20% greater than the theoretical capacity of TiS2 at 239 mAh g−1. The difference provides an excess capacity in the indium metal negative electrode. |
| |
| Keywords: | Titanium sulfide Lithium nitride Solid-state In situ Lithiation |
| 本文献已被 ScienceDirect 等数据库收录！ |
