Abstract: Herein, a lanthanum-based corrosion-resistant film (LaCRF) was grown on the surface of the zinc anode, which effectively reduced the nucleation overpotential of zinc ions and significantly inhibited the formation of zinc dendrites, substrate corrosion, and by-products. Electrochemical performance tests indicate that symmetric cells modified with LaCRF exhibited over 3000 hours of cycling stability and minimal polarization at a current density of 2 mA·cm?2 - 1 mAh·cm?2. Furthermore, in Zn@LaCRF // Cu half-cell, the cycle life exceeded 800 cycles; meanwhile, in Zn@LaCRF∥MnO2 full cell, the capacity retention rate remains as high as 91.9 % after 2000 cycles at a current density of 1.8 A·g-1. This achievement not only provides a new solution for addressing the corrosion issues of zinc anodes but also paves a new direction for the application of rare earth elements in rechargeable aqueous zinc-ion batteries.

Key words: Aqueous zinc batteries, Zinc negative, Corrosion resistant film, Rare earth elements, Cycling performance