A salt and battery: The charge-transfer reaction at the electrode/electrolyte interfaces is important in the fabrication of high-power-density lithium-ion secondary batteries. This reaction rate is increased by adding a poly(ethylene glycol)–borate ester Lewis acid to the electrolyte. Because the Lewis acid interacts preferentially with anions (X−), an increase in the activity of lithium ions is induced by enhancing the dissociation of lithium salts (Li+X−, see scheme).
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