Charge transfer from perovskite oxide nanosheets to N-doped carbon nanotubes to promote enhanced performance of a zinc-air battery

Rahul Majee; Surajit Mondal; Sayan Bhattacharyya

doi:10.1039/d0cc03154b

Charge transfer from perovskite oxide nanosheets to N-doped carbon nanotubes to promote enhanced performance of a zinc-air battery

Chem Commun (Camb). 2020 Jul 23;56(59):8277-8280. doi: 10.1039/d0cc03154b.

Authors

Rahul Majee¹, Surajit Mondal, Sayan Bhattacharyya

Affiliation

¹ Department of Chemical Sciences, and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, India. sayanb@iiserkol.ac.in.

PMID: 32572406
DOI: 10.1039/d0cc03154b

Abstract

Room temperature engineered spatially connected p-type double perovskite oxide (BaPrMn1.75Co0.25O5+δ, BPMC) nanosheets (NSs) with n-type nitrogen-doped multi-walled carbon nanotubes (NCNTs) show significant enhancement in bifunctional oxygen electrocatalytic activity. The optimization of the donor level by charge transfer from the perovskite to NCNTs is demonstrated to be a prodigious approach to facilitate redox oxygen activation. A proof-of-concept rechargeable zinc-air battery (ZAB) with BPMC containing a 10 wt% NCNT (BPMC/NCNT-10) cathode demonstrates the highest specific discharge capacity of 789.2 mA h gZn-1 and cyclic stability for 85 h at a current density of 5 mA cm-2.