Issue 13, 2016

Hierarchical Cu2−XSe nanotubes constructed by two-unit-cell-thick nanosheets: room-temperature synthesis and promoted electrocatalytic activity towards polysulfides

Abstract

Hierarchical Cu2−XSe nanotubes, constructed by nanosheets with a thickness of two unit cells (1.2 nm), have been fabricated with Cu(OH)2 nanorod arrays as self-sacrificial templates at room temperature, with a high surface area of 72.3 m2 g−1. The unique structure of the Cu2−XSe nanotubes leads to high electrocatalytic activity towards the reduction of polysulfides, given their enlarged active surface area, rapid transportation of electrons and mass. As a result, quantum dot-sensitized solar cells (QDSSCs) with the obtained Cu2−XSe nanotubes as the counter electrode material exhibit long-term stability and a high power conversion efficiency of 5.14% (1 sun irradiation simulation), better than those of the commonly-used Cu2S/brass (3.38%) and reference Pt (1.78%) electrodes.

Graphical abstract: Hierarchical Cu2−XSe nanotubes constructed by two-unit-cell-thick nanosheets: room-temperature synthesis and promoted electrocatalytic activity towards polysulfides

Supplementary files

Article information

Article type
Paper
Submitted
07 Jan 2016
Accepted
27 Feb 2016
First published
01 Mar 2016

J. Mater. Chem. A, 2016,4, 4790-4796

Hierarchical Cu2−XSe nanotubes constructed by two-unit-cell-thick nanosheets: room-temperature synthesis and promoted electrocatalytic activity towards polysulfides

M. Wang, J. Zai, B. Li, Y. Wang, S. Huang, Q. He and X. Qian, J. Mater. Chem. A, 2016, 4, 4790 DOI: 10.1039/C6TA00184J

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