Fabrication of Superhigh-Power-Density Rechargeable Zn-Air Batteries by Incorporating Nanoporous Alloy Materials as Oxygen Catalysts

Both self-supported and graphene oxide (GO)-supported nanoporous Ni-Fe-Co-based alloy materials and Ni-Re-based superalloy nanowire materials were successfully synthesized and used as electrocatalysts for developing high-performance rechargeable Zn-air batteries. Rechargeable Zn-air batteries with a superhigh power density of about 500 mWh/cm2 were successfully developed with the unique nanoalloy electrocatalysts of nanoporous Ni-Fe-Co-based alloy materials and Ni-Re-based superalloy nanowire materials. The discharge and charge performance of the fabricated Zn-air batteries with the different electrocatalysts were compared.

Automated summary

In this study, self-supported and graphene oxide (GO)-supported nanoporous Ni-Fe-Co-based alloy materials and Ni-Re-based superalloy nanowire materials were synthesized and used as electrocatalysts for high-performance rechargeable Zn-air batteries. The unique nanoalloy electrocatalysts enabled the development of Zn-air batteries with a superhigh power density of about 500 mWh/cm2.