Issue 35, 2020

Enhancing cycling stability of tungsten oxide supercapacitor electrodes via a boron cluster-based molecular cross-linking approach

Abstract

We report our discovery of utilizing perhydroxylated dodecaborate clusters ([B12(OH)12]2−) as a molecular cross-linker to generate a hybrid tungsten oxide material. The reaction of [NnBu4]2[B12(OH)12] with WCl6, followed by subsequent annealing of the product at 500 °C in air successfully produces a tungsten oxide material cross-linked with B12-based clusters. The comprehensive structural study of the produced hybrid material confirms a cross-linked network of intact boron-rich clusters and tungsten oxides. We further demonstrate how these robust B12-based clusters in the resulting hybrid tungsten oxide material can effectively preserve the specific capacitance up to 4000 cycles and reduce the charge transfer resistance as well as the response time compared to that of pristine tungsten oxide. Ultimately, this work highlights a promising capability of boron-rich clusters in hybrid metal oxides to obtain fast and stable supercapacitors with high capacitance.

Graphical abstract: Enhancing cycling stability of tungsten oxide supercapacitor electrodes via a boron cluster-based molecular cross-linking approach

Supplementary files

Article information

Article type
Paper
Submitted
15 juin 2020
Accepted
18 août 2020
First published
18 août 2020

J. Mater. Chem. A, 2020,8, 18015-18023

Author version available

Enhancing cycling stability of tungsten oxide supercapacitor electrodes via a boron cluster-based molecular cross-linking approach

D. Jung, M. Muni, G. Marin, R. Ramachandran, M. F. El-Kady, T. Balandin, R. B. Kaner and A. M. Spokoyny, J. Mater. Chem. A, 2020, 8, 18015 DOI: 10.1039/D0TA05915C

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