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Two testing protocols, QC/T 743 and those used by the U.S. Advanced Battery Consortium (USABC), were compared using cells based on LiFePO4/graphite chemistry. Differences in the protocols directly affected the data and the performance decline mechanisms deduced from the data. In all cases, the rate of capacity fade was linear with time. Overall, the testing protocols produced very similar data when...
Cells with and without a LiC 2 O 4 BF 2 electrolyte additive and that contained Li 1.05 (Mn 1/3 Co 1/3 Ni 1/3 ) 0.95 O 2 (NMC) positive electrodes were tested for calendar and cycle life at 60% state of charge. The temperatures used in these tests were 25 and 45°C (cycle life) and 45 and 55°C (calendar life). An analysis of the...
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