Ionic accelerator based on metal–semiconductor contact for fast electrode kinetics and durable Zn-metal anode

•Zn/SiC Ohmic contact inhibits dendrite growth by inhibiting e- transfer to SiC layer.•Φb enhances Zn2+-conductivity, resulting in high electrode process kinetics.•Zn@SiC anode shows excellent durability (3770 h, 1.0 mA cm−2)•Relationship between deposition position and critical current density was clarified.