Abstract

HighlightsNegative charged acidic polarity (NCAP) has been unveiled as the guideline for selecting additives to regulate electric double layer (EDL) for Zn-ion batteries.NCAP glutamate has been verified to regulate EDL structure with synergetic effects, including preferential adsorption on Zn anode and reconstruction of hydrated Zn-ion clusters.Adding NCAP additives, Zn|Cu half-cell achieves a high Coulombic efficiency of 99.83% for 2000 cycles, and NH4V4O10|Zn full cell realizes a high-capacity retention of 82.1% for 3000 cycles.

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