A 4 V Lithium Manganese Oxide Cathode for Rocking‐Chair Lithium‐Ion Cells

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Abstract
Composite cathodes for lithium‐ion rocking‐chair cells have been fabricated based on which was synthesized by a new solution route that may be carried out in air. These cathodes have been cycled in three‐electrode cells at discharge and charging current densities of 1 and 0.5 mA cm−2, respectively (corresponding to a discharge rate of C/2), between limits of 4.4 and 3.3 V. The specific discharge capacity obtained initially is 110 mAhg−1 of active material decreasing by only 25 mAhg−1 to yield a capacity of 85 mAhg−1 at 300 cycles. This performance is very promising in the context of developing rechargeable lithium‐ion batteries using lithium manganese oxide‐based positive electrodes.

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