Galvanic Interfacial Reconstruction Enables Ultralong‐Life Low‐Temperature Organic Zinc‐Ion Batteries

Résumé fourni par la source

ABSTRACT Rechargeable zinc‐ion batteries are promising for large‐scale energy storage; however, hydrogen evolution, corrosion, and freezing in aqueous electrolytes, coupled with high polarization and insufficient interfacial regulation in organic electrolytes, severely restrict their long‐life operation over a wide temperature range. Here, we report a galvanic interfacial reconstruction strategy in a DMF‐based organic electrolyte through the introduction of InCl 3 . The spontaneous galvanic displacement reaction between Zn and In 3+ forms an In‐rich heterometallic interphase (In‐HMI) on the Zn surface without substantially perturbing the DMF‐dominated Zn 2+ solvation structure. This zincophilic interphase provides uniformly distributed heterogeneous nucleation sites, effectively lowers the Zn nucleation barrier, homogenizes Zn 2+ deposition, and suppresses dendrite growth, thereby endowing the DMF‐In electrolyte with excellent low‐temperature Zn plating/stripping reversibility. Consequently, Zn||Zn symmetric cells operate stably for over 15 000 h at −40°C under 1.0 mA cm −2 /1.0 mAh cm −2 with low polarization. Moreover, Zn||VO 2 full cells retain a stable capacity of 90 mAh g −1 after 1000 cycles at −40°C and 0.5 C. The corresponding Zn||NH 4 V 4 O 10 pouch cell also maintains stable cycling under a high total active‐material loading of 186.5 mg, highlighting the viability of galvanic interfacial reconstruction for durable low‐temperature organic zinc‐ion batteries.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.