Ultrathin dendritic IrTe nanotubes for an efficient oxygen evolution reaction in a wide pH range

Qiurong Shi; Chengzhou Zhu; Dan Du; Jin Wang; Haibing Xia; Mark H. Engelhard; Shuo Feng; Yuehe Lin

doi:10.1039/C8TA01288A

Ultrathin dendritic IrTe nanotubes for an efficient oxygen evolution reaction in a wide pH range†

Qiurong Shi,

^a Chengzhou Zhu,

*^ab Dan Du,*^ab Jin Wang,^c Haibing Xia,

^c Mark H. Engelhard,

^d Shuo Feng^a and Yuehe Lin

*^a

Author affiliations

* Corresponding authors

^a School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, USA
E-mail: zhuchzh@gmail.com, yuehe.lin@wsu.edu

^b Key Laboratory of Pesticide and Chemical Biology, Ministry of Education of the PR China, College of Chemistry, Central China Normal University, Wuhan 430079, China
E-mail: dan.du@mail.ccnu.edu.cn

^c Institute of Crystal Materials, Shandong University, Jinan 250100, P. R. China

^d Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352, USA

Abstract

The shape control of Ir-based nanostructured materials, which are considered as the state-of-the-art anode electrocatalyst candidates toward the oxygen evolution reaction (OER), has been rarely reported. Here, we reported an efficient synthesis of ultrathin dendritic IrTe nanotubes (NTs) via a galvanic replacement reaction using Te nanowires as the template at 190 °C for 1 h. The as-obtained IrTe NTs exhibited improved electrocatalytic activity and stability toward the OER with a much smaller overpotential of 290 mV and Tafel slope of 60.3 mV dec⁻¹ to attain a current density of 10 mA cm⁻² in acidic medium, compared with commercial IrO₂ nanoparticles. Moreover, IrTe NTs also demonstrated enhanced electrocatalytic performances in neutral and alkaline media. The outstanding electrochemical properties of IrTe NTs in a wide pH range hold great promise in energy storage and conversion devices.

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DOI: https://doi.org/10.1039/C8TA01288A
Article type: Communication
Submitted: 07 Feb 2018
Accepted: 31 Mar 2018
First published: 02 Apr 2018

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J. Mater. Chem. A, 2018,6, 8855-8859

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Ultrathin dendritic IrTe nanotubes for an efficient oxygen evolution reaction in a wide pH range

Q. Shi, C. Zhu, D. Du, J. Wang, H. Xia, M. H. Engelhard, S. Feng and Y. Lin, J. Mater. Chem. A, 2018, 6, 8855 DOI: 10.1039/C8TA01288A

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Journal of Materials Chemistry A

Ultrathin dendritic IrTe nanotubes for an efficient oxygen evolution reaction in a wide pH range†

Abstract

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Ultrathin dendritic IrTe nanotubes for an efficient oxygen evolution reaction in a wide pH range

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