Distinct chemistry between Zn and Li at varied temperature.

Zn metal anodes that are compatible with aqueous electrolytes open the door to developing safe and cost-effective rechargeable Zinc based batteries (RZBs). However, the Commercialization of RZBs requires efforts from multiple dimensions. In this study, the temperature dependence of the Zn metal anode's lifespan is in reverse with the Li metal anode counterpart. key factors that affect the temperature sensibility of the metal anode were summarized. Based on that, we demonstrate that adjusting the electrolyte composition can customize the nominal operation temperature and balance the battery performance. [Display omitted] The operating temperature of batteries is an essential consideration in actual applications. Understanding the temperature dependence is conducive to battery design. The experience in lithium-ion batteries (LIBs) indicates that the dendrite issue is exacerbated at lower temperatures and suppressed at higher temperatures. In this study, we revealed the dendrite evolution in aqueous rechargeable zinc-based batteries (RZBs), for which the opposite temperature dependence was observed. Detailed investigations elucidate that the degree of matching of the interface reaction rate and ion diffusivity, together with side reactions, are the key factors that determine the cycling performance. The different properties of organic and aqueous electrolytes result in a reversed temperature dependence. We further conducted a detailed investigation of hybrid electrolytes (organic and aqueous) for balancing the ion diffusivity and side reactions to broaden the working temperature window for RZBs. This work reveals a completely opposite temperature dependence for LIBs and RZBs and discloses the underlying mechanism, reminding one of the differences between LIBs and RZBs in many aspects. [ABSTRACT FROM AUTHOR]