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(a) cyclic voltammograms showing the 1.5 V electrochemical window of the V4C3TZ electrode achieved in the 17.5 molal LiBr electrolyte – for comparison, the same cyclic voltammogram for the 5 molal LiBr electrolyte is shown, which shows a smaller 1.4 V electrochemical window and an enhanced current peak due to undesirable secondary reactions at 1.4 V, (b) ionic conductivity and dynamic viscosity of the LiBr electrolyte as a function of concentration. The optimized electrolyte showed a balance of both properties that favoured electrochemical storage (red rectangle).

 

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HIGHER EDUCATON PRESS

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