Journal
ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume 14, Issue 4, Pages A39-A41Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3543569
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Funding
- NSERC
- 3M Canada
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The differential capacity and charge-discharge end points of a commercial LiMn2O4/graphite cell were examined using high precision constant-current chronopotentiometry and coulometry. The positive and negative electrodes from a fresh commercial cell were recovered and used to generate high precision reference potential-capacity data versus Li. The reference data were used to calculate differential capacity versus potential for theoretical LiMn2O4/graphite cells which could be perfectly matched to data from experiments on full cells. Matching was achieved primarily by relative slippage in capacity of the positive and negative potential-capacity curves. This allowed a detailed understanding of the aging processes and capacity fade of a full cell. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3543569] All rights reserved.
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