Single-cell-array biomass-templated architecture of hierarchical porous electrocatalysts for Zn–air and Zn–H₂O₂ batteries

Abstract

Hierarchically macro-meso-microporous ZIF-67/nori derived electrocatalysts were synthesized by using single-cell-array nori and ZIF-67 as macroporous and microporous templates, and KOH as meso/micropore-forming reagent. ZIF-67/nori-800 based Zn-H2O2 battery has achieved a...

Beyond metal–air battery, emerging aqueous metal–hydrogen peroxide batteries with improved performance

“…Hierarchically macro-meso-microporous ZIF-67/nori-derived electrocatalysts were successfully synthesized by using single-cell-array nori and ZIF-67 as macroporous and microporous templates, and KOH as a meso/microporeforming reagent. 83 Importantly, the ZIF-67/nori-800based Zn-H 2 O 2 battery achieved the highest peak maximum power density of 476 mW cm −2 and a specific energy density of 964 Wh kg −1 at 50 mA cm −2 . Moreover, the Zn-H 2 O 2 battery exhibits excellent power density and specific energy density, which are beyond those of Zn-air cells.…”

“…Very recently, biomass was used as a template to synthesize bifunctional electrocatalysts due to the unique single‐cell thickness of nori. Hierarchically macro–meso–microporous ZIF‐67/nori‐derived electrocatalysts were successfully synthesized by using single‐cell‐array nori and ZIF‐67 as macroporous and microporous templates, and KOH as a meso/micropore‐forming reagent 83 . Importantly, the ZIF‐67/nori‐800‐based Zn–H 2 O 2 battery achieved the highest peak maximum power density of 476 mW cm − 2 and a specific energy density of 964 Wh kg − 1 at 50 mA cm − 2 .…”