Fluoroalkyl ether-diluted dimethyl carbonate-based electrolyte solutions for high-voltage operation of LiNi 0.5 Co 0.2 Mn 0.3 O 2 electrodes in lithium ion batteries

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High-voltage operation of LiNi 0.5 Co 0.2 Mn 0.3 O 2 positive electrodes is attained in highly concentrated LiBF 4 /DMC electrolyte solution because of the stabilized BF 4 − and DMC.