Issue 12, 2020

Morphology control of metal-modified zirconium phosphate support structures for the oxygen evolution reaction

Abstract

The electrochemical oxygen evolution reaction (OER) is the half-cell reaction for many clean-energy production technologies, including water electrolyzers and metal–air batteries. However, its sluggish kinetics hinders the performance of those technologies, impeding them from broader implementation. Recently, we reported the use of zirconium phosphate (ZrP) as a support for transition metal catalysts for the oxygen evolution reaction (OER). These catalysts achieve promising overpotentials with high mass activities. Herein, we synthesize ZrP structures with controlled morphology: hexagonal platelets, rods, cubes, and spheres, and subsequently modify them with Co(II) and Ni(II) cations to assess their electrochemcial OER behavior. Through inductively coupled plasma mass-spectrometry measurements, the maximum ion exchange capacity is found to vary based on the morphology of the ZrP structure and cation selection. Trends in geometric current density and mass activity as a function of cation selection are discussed. We find that the loading and coverage of cobalt and nickel species on the ZrP supports are key factors that control OER performance.

Graphical abstract: Morphology control of metal-modified zirconium phosphate support structures for the oxygen evolution reaction

Supplementary files

Article information

Article type
Paper
Submitted
23 Dit 2019
Accepted
18 Kax 2019
First published
18 Kax 2019

Dalton Trans., 2020,49, 3892-3900

Author version available

Morphology control of metal-modified zirconium phosphate support structures for the oxygen evolution reaction

M. V. Ramos-Garcés, J. Sanchez, K. La Luz-Rivera, D. E. Del Toro-Pedrosa, T. F. Jaramillo and J. L. Colón, Dalton Trans., 2020, 49, 3892 DOI: 10.1039/C9DT04135D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements