Anchoring Mn3O4 Nanoparticles on Oxygen Functionalized Carbon Nanotubes as Bifunctional Catalyst for Rechargeable Zinc-Air Battery

Laiquan Li, Jun Yang, Hongbin Yang, Liping Zhang, Jinjun Shao, Wei Huang, Bin Liu, Xiaochen Dong

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

Transition metal oxide hybridized with carbon is promising for multifunctional electrocatalysis. In this work, Mn3O4 nanoparticles were embedded into oxygen functionalized carbon nanotubes (Mn3O4/O-CNTs) via a facile wet impregnation method followed by oxygen plasma treatment. The O-CNTs not only act as conductive support for Mn3O4 nanoparticles, but also provide catalytically active centers for the oxygen evolution reaction (OER). This material benefitted from both the excellent electrocatalytic activity and the separated oxygen reduction reaction (ORR) and OER active sites, as the zinc-air battery assembled from the bifunctional Mn3O4/O-CNT electrode exhibits high power density, reaching 86.6 mW cm-2 with discharge capacity up to 827.6 mAh g-1 and super cycling stability, which can be stably charged and discharged over as long as 150 h at 2 mA cm-2. Our work demonstrates an innovative design for stable bifunctional catalysis in renewable energy applications.

Original languageEnglish
Pages (from-to)963-969
Number of pages7
JournalACS Applied Energy Materials
Volume1
Issue number3
DOIs
StatePublished - 26 Mar 2018

Keywords

  • MnO
  • bifunctional electrocatalyst
  • carbon nanotube
  • oxygen evolution
  • oxygen reduction
  • rechargeable Zn-air battery

Fingerprint

Dive into the research topics of 'Anchoring Mn3O4 Nanoparticles on Oxygen Functionalized Carbon Nanotubes as Bifunctional Catalyst for Rechargeable Zinc-Air Battery'. Together they form a unique fingerprint.

Cite this