Abstract
Herein we describe the direct synthesis of lithium intercalated graphite by heating under vacuum or ball milling under pressurized Ar(g). Both methods allow for stoichometric control of Li-C ratio in battery-grade graphites and carbon fibers prior to formation of a solid electrolyte interphase. The products' surface chemistries, as probed by XPS, suggest that LiC6 are extremely reactive with trace amounts of moisture or oxygen. The open circuit potential and SEM data show that the reactivity of the lithiated battery-grade graphite and the carbon fiber can be related to the density of edge/defect sites on the surfaces. Preliminary results of spontaneous delithiation of Li-graphite in electrolyte are also given.
| Original language | English |
|---|---|
| Pages (from-to) | A614-A619 |
| Journal | Journal of the Electrochemical Society |
| Volume | 161 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2014 |
Bibliographical note
Publisher Copyright:© 2014 The Electrochemical Society. All rights reserved.
Funding
Research was supported by the Fluid Interface Reactions, Structures, and Transport (FIRST) Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences (RLS, LAA, NJD). XPS analysis was done with support of the U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division (GMV). The authors thank Applied Science, Inc. for samples of the Pyrograf I carbon fibers and Pred Materials International for the MGPA.
| Funders | Funder number |
|---|---|
| Energy Frontier Research Center | |
| Fluid Interface Reactions | |
| Office of Basic Energy Sciences | |
| U.S. Department of Energy | |
| Foundation for Ichthyosis and Related Skin Types | |
| Office of Science |
