Patent ID: 7595611
Filing Date: 2009-09-29
Classification: H01G,H01M,Y02E

Abstract:
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.