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Updated: Jul 11, 2026

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
Published on: June 21, 2017
Controllable Synthesis of a Loofah-Like Cobalt-Nickel Selenide Network as an Efficient Electrocatalyst for the
Yanxia Liu1,2, Zhangmin Tian2, Qiuchen Xu2
1Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China.
Abstract:
The rational design and construction of noble metal-free electrocatalysts featuring high efficiency and low cost are important for the hydrogen evolution reaction (HER). A significant development in the synthesis of a loofah-like Co0.6Ni0.4Se2 architecture (expressed as Co0.6Ni0.4Se2-LN) electrocatalyst on carbon cloth through a three-step method is reported. Both the ionic liquid 1-dodecyl-3-methylimidazolium acetate (IL, [C12MIm]Ac) and the molar ratio of Co to Ni play a pivotal role in the synthesis of Co0.6Ni0.4Se2-LN with 3D hierarchical architecture. Co0.6Ni0.4Se2-LN exposes abundant active sites and provides hierarchical and stable transfer channels for both electrolyte ions and electrons, which results in outstanding HER performance. Impressively, Co0.6Ni0.4Se2-LN shows a low overpotential of 163 mV at 10 mA cm-2, a small Tafel slope of 40 mV dec-1, and superior stability to continuously catalyze the generation of H2 for 40 h. This study offers a new perspective to the synthesis of high-efficiency inexpensive electrocatalysts for HER and also presents a good example for investigating the potential application of ILs in the synthesis of functional materials.
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