Issue 29, 2017

Solution-based sequential modification of LiCoO2 particle surfaces with iron(ii) oxalate nanolayers

Abstract

Hybridization of metal–organic frameworks (MOFs) with other inorganic materials offers the opportunity to enhance their properties or open new windows for potential applications. Formation of core/shell structures, in which the core is the inorganic particle and the shell is the surface-deposited MOF, is one of the rational methodologies to create such hybrid materials. Here, we present the facile creation of metal oxide-core/MOF-shell structures by applying a solution-based step-by-step modification of the core surface using a framework compound. The modification procedure includes alternate immersion of LiCoO2 (LCO) – a catalyst for the oxygen evolution reaction – into oxalic acid and ferrous solutions, resulting in the formation of iron(II) oxalate (Fe(ox), ox = oxalate anion) – one of the simplest MOFs with short unit frameworks – nanolayers on the LCO surface (Fe(ox)NL@LCO). The amount of deposited Fe(ox) does not increase monotonically with the number of the modification cycles, but tends to saturate rapidly, implying that the Fe(ox) framework grows laterally on the LCO surface. An increase of the electrical resistivity of the LCO particles that influences adversely catalytic activity is suppressed when a high coverage of the LCO surface by the Fe(ox) framework is achieved at subsequent modification cycles.

Graphical abstract: Solution-based sequential modification of LiCoO2 particle surfaces with iron(ii) oxalate nanolayers

Supplementary files

Article information

Article type
Communication
Submitted
24 جمادى الثانية 1438
Accepted
23 شعبان 1438
First published
23 شعبان 1438

CrystEngComm, 2017,19, 4175-4181

Solution-based sequential modification of LiCoO2 particle surfaces with iron(II) oxalate nanolayers

Y. Kishimoto, S. Yubuchi, A. Hayashi, M. Tatsumisago and R. Makiura, CrystEngComm, 2017, 19, 4175 DOI: 10.1039/C7CE00552K

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