Relaxation phenomena in lithium-ion-insertion cells

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2054868· OSTI ID:7200965

Fuller, T F; Doyle, M; Newman, J ^[1]

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1. Univ. of California, Berkeley, CA (United States). Dept. of Chemical Engineering

Relaxation phenomena in lithium-ion-insertion cells are modeled. Simulation results are presented for a dual lithium-ion-insertion cell and for a cell using a lithium-foil negative electrode. A period of relaxation after a charge or discharge can cause appreciable changes in the distribution of material in the insertion electrodes. Local concentration cells in the solution phase and an open-circuit potential that depends on state of charge for the solid phase drive the redistribution of material. Concentration profiles in solid and solution phases during relaxation are analyzed, and the consequences for cell performance are discussed. The model predicts the effects of relaxation time on multiple charge-discharge cycles and on peak power. Galvanostatic and potentiostatic charging are simulated; the results are compared to experimental data for a commercial battery.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7200965
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 141:4; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250902* -- Energy Storage-- Batteries-- Performance & Testing
ALKALI METALS
BATTERY CHARGING
CONCENTRATION RATIO
ELECTRIC BATTERIES
ELECTRIC-POWERED VEHICLES
ELECTROCHEMICAL CELLS
ELEMENTS
LITHIUM
MATHEMATICAL MODELS
METALS
PERFORMANCE
RELAXATION
VEHICLES
VOLTAGE DROP