Publication detail

Metal-organic-frameworks on 3D-printed electrodes:in situelectrochemical transformation towards the oxygen evolution reaction

YING, Y. BROWNE, M. PUMERA, M.

Original Title

Metal-organic-frameworks on 3D-printed electrodes:in situelectrochemical transformation towards the oxygen evolution reaction

Type

journal article in Web of Science

Language

English

Original Abstract

Metal-organic framework (MOF) derived materials are important alternatives for electrochemical energy storage and conversion, due to their highly large surface area, abundant active sites, and diversity in composition and structure. In this work, a controllable electrochemical transformation of ZIF-67 into active porous metal oxides is employed for the oxygen evolution reaction (OER). ZIF-67 is directly coated onto the surface of three-dimensional (3D) printed titanium (Ti) electrodes using a step-by-stepin situgrowth and then converted into cobalt oxide (Co3O4) by electrochemical cycling, designated as ZIF-67/Ti-E electrode. Raman spectroscopy, scanning electron microscopy (SEM), and cyclic voltammetry (CV) have been used to verify the electrochemical transformation from octahedral ZIF-67 to thin sheet-shaped Co3O4. This large-surface-area Co3O4, as well as the existence of Co(IV)species right before water oxidation, plays a critical role in enhanced OER performance under alkaline electrolysis conditions. The optimized ZIF-67/Ti-E electrode has demonstrated a better OER performance with a low overpotential of 360 mV at a current density of 10 mA cm(-2)and excellent durability, compared with its counterparts produced by the widely popular calcination method. Our method provides a simplein situ, fast, mild, and energy-efficient approach to employ MOF-derived materials as promising OER catalysts using scaled-up 3D-printed electrodes.

Keywords

CATALYTIC-PROPERTIES; GAS-ADSORPTION; ELECTROCATALYSTS; COBALT; ZIF-67; REDUCTION; MONOLITHS; REMOVAL; CO2

Authors

YING, Y.; BROWNE, M.; PUMERA, M.

Released

1. 7. 2020

Publisher

ROYAL SOC CHEMISTRY

Location

CAMBRIDGE

ISBN

2398-4902

Periodical

SUSTAINABLE ENERGY & FUELS

Year of study

4

Number

7

State

United Kingdom of Great Britain and Northern Ireland

Pages from

3732

Pages to

3738

Pages count

7

URL

https://pubs.rsc.org/en/content/articlelanding/2020/SE/D0SE00503G#!divAbstract

BibTex

@article{BUT167493,
  author="Yulong {Ying} and Michelle P. {Browne} and Martin {Pumera}",
  title="Metal-organic-frameworks on 3D-printed electrodes:in situelectrochemical transformation towards the oxygen evolution reaction",
  journal="SUSTAINABLE ENERGY & FUELS",
  year="2020",
  volume="4",
  number="7",
  pages="3732--3738",
  doi="10.1039/d0se00503g",
  issn="2398-4902",
  url="https://pubs.rsc.org/en/content/articlelanding/2020/SE/D0SE00503G#!divAbstract"
}