Dodd, J. L. and Yazami, R. and Fultz, B. (2006) Determining the Phase Diagram of Li_xFePO_4. ECS Transactions, 1 (26). pp. 27-38. ISSN 1938-6737. doi:10.1149/1.2209354. https://resolver.caltech.edu/CaltechAUTHORS:20180913-133203503
Full text is not posted in this repository. Consult Related URLs below.
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20180913-133203503
Abstract
The phase diagram for Li_xFePO_4 has been determined for different lithium concentrations and temperatures. X-ray diffraction analysis was used to determine phase fractions at temperatures between room temperature and 400 °C for Li_xFePO_4 at different states of lithiation. The two low- temperature phases, heterosite and triphylite, have previously been shown to transform to a disordered solid solution at elevated temperatures. This disordered phase allows for a continuous transition between the heterosite and triphylite phases and is stable at relatively low temperatures. At intermediate temperatures the proposed phase diagram resembles a eutectoid system, with eutectoid point at around x=0.6 and 200 °C. Kinetics of mixing and unmixing transformations are reported, including the hysteresis between heating and cooling. The enthalpy of this transition is at least 700 J/mol.
| Item Type: | Article | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Related URLs: |
| |||||||||
| ORCID: |
| |||||||||
| Alternate Title: | Determining the Phase Diagram of LixFePO4 | |||||||||
| Additional Information: | © 2006 ECS - The Electrochemical Society. The content of this paper has been published in the journal Electrochemical and Solid State Letters, Volume 9, Number 3, as “Phase Diagram of Li_xFePO_4.” The authors thank Dr. Khalil Amine, Dr. Ilias Belharouak and Argonne National Laboratory for providing the LiFePO_4 material. This work was supported by the U.S. Dept. of Energy under grant DE-FG03-00ER15035. | |||||||||
| Funders: |
| |||||||||
| Issue or Number: | 26 | |||||||||
| DOI: | 10.1149/1.2209354 | |||||||||
| Record Number: | CaltechAUTHORS:20180913-133203503 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180913-133203503 | |||||||||
| Official Citation: | Joanna L. Dodd, Brent Fultz, and Rachid Yazami Determining the Phase Diagram of LixFePO4 ECS Trans. 2006 1(26): 27-38; doi:10.1149/1.2209354 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 89620 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 14 Sep 2018 16:09 | |||||||||
| Last Modified: | 16 Nov 2021 00:36 |
Repository Staff Only: item control page
