| US 7,595,611 B2 | ||
| Electrochemical thermodynamic measurement system | ||
| Yvan Reynier, Meylan (France); Rachid Yazami, Los Angeles, Calif. (US); and Brent T. Fultz, Pasadena, Calif. (US) | ||
| Assigned to California Institute of Technology, Pasadena, Calif. (US); and Cantre National de le Recherche Scientifique, Paris (France) | ||
| Filed on Aug. 03, 2006, as Appl. No. 11/462,290. | ||
| Claims priority of provisional application 60/705535, filed on Aug. 03, 2005. | ||
| Prior Publication US 2007/0182418 A1, Aug. 09, 2007 | ||
| Int. Cl. H02J 7/04 (2006.01) | ||
| U.S. Cl. 320—153 [320/152] | 60 Claims |
| 1. A measurement system for thermodynamically evaluating an electrochemical cell having electrodes; said system comprising:
a means for measuring open circuit voltages of said electrochemical cell as a function of time;
a composition controller electrically connected to said electrochemical cell for establishing selected electrochemical cell
compositions, said composition controller configured for establishing a plurality of said selected compositions;
a temperature controller in thermal contact with said electrochemical cell for establishing a plurality of selected electrochemical
cell temperatures for each of said selected compositions, thereby establishing a plurality of selected electrochemical cell
temperature and composition combinations; and
an open circuit voltage analyzer for receiving open circuit voltage measurements as a function of time from said means for
measuring open circuit voltages and for identifying open circuit voltages for thermochemically stabilized conditions of said
electrochemical cell for said selected electrochemical cell temperature and composition combinations,
wherein one of said electrodes is an intercalating electrode and the selected electrochemical cell compositions correspond
to different stoichiometries of an intercalant incorporated with said intercalating electrode of said electrochemical cell.
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