• • The engineered polymer electrolyte extends FZAB cycle life beyond 50 hours, overcoming the typical <50 h limitation, by capturing atmospheric water and suppressing anode degradation.
• • Acetamide (AA) additive, identified via unsupervised clustering, reconstructs Zn2+ coordination, promoting salt dissociation and polymer-segment mobility, enhancing ionic conductivity and interfacial stability.
• • AA exhibits low adsorption energy on zinc surfaces, directing Zn2+ deposition along the (002) crystal plane, resulting in uniform plating morphology and reduced parasitic reactions.
• • The electrolyte retains stable output under extreme mechanical stress, including compression by a 1.7-ton vehicle, demonstrating robustness for wearable applications.