Critical Criteria Depicting the Rational Design of Zn Anode Current Collector

Abstract

AbstractBy virtue of the intrinsic safety and cost‐effectiveness, aqueous Zn‐ion batteries (AZIBs) have gained increasing attention in the realm of energy storage. In spite of the promise of Zn anode, challenges like dendrite growth and side reactions persist as hurdles to be overcome. Addressing this, the rational design of Zn anode current collectors (ZACCs) is an effective solution. Recent years have witnessed the significant strides in the construction of ZACCs, yet the precise pathways for ZACC development remain unclear, lacking a set of specific criteria to guide progress. In this comprehensive review, acknowledging the concerns surrounding Zn anodes, six criteria—electrical conductivity, zincophilicity, orientational deposition inducibility, chemical stability, mechanical durability, and scalability—are innovatively put forward as pivotal benchmarks for the design of ZACCs. Each criterion is accompanied by tailored optimization strategies and corresponding challenges. Furthermore, future trend in ZACCs development is envisaged, along with potential application scenarios for AZIBs. This review will expedite the advancement of ZACCs and contribute to the flourishing landscape of AZIBs.