Facile fabrication of nickel nanostructures on a copper-based template via a galvanic replacement reaction in a deep eutectic solvent

Yang, Chuang; Zhang, Q.B.; Abbott, Andrew P.

doi:10.1016/j.elecom.2016.07.004

Cited by 52 publications

(22 citation statements)

References 38 publications

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“…3D interconnected core/shell nanoporous nickel films are found to grow homogeneously on the nano-ligaments of the nanoporous copper (NPC) template due to the slow reaction kinetics. [34] This self-supported nanoporous nickel film possesses highly active for HER in alkaline solutions, while it is not stable during long-term electrolysis. Inspired by the abovementioned work, with the objective of further improving its activity and durability, we have developed a nickel sulfide (Ni3S2) nanoporous film as active earth-abundant catalyst for the HER.…”

Section: Introductionmentioning

confidence: 99%

In-situ activation of self-supported 3D hierarchically porous Ni3S2 films grown on nanoporous copper as excellent pH-universal electrocatalysts for hydrogen evolution reaction

et al. 2017

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The exploitation of low-cost, stable, and highly active electrocatalysts based on earth-abundant metals for hydrogen evolution reaction (HER) is crucial for developing renewable energy techniques. In this work, we report a facile synthesis strategy for in-situ fabrication of 3D hierarchically porous Ni3S2 films on a nanoporous copper substrate (Ni3S2@NPC) by unusual galvanic replacement reaction in the Ethaline-based deep eutectic solvent (DES) under a normal atmosphere. The self-supported nanoporous Ni3S2@NPC electrode is binder-free and exhibits good structural integrity with high conductivity. A mild evolution of bulk gas bubbles (H2-O2 gas mixture) is proved to drive an in-situ structure rearrangement process of the Ni3S2@NPC and results in substantial increases in the HER activity. The activated Ni3S2@NPC (a-Ni3S2@NPC) electrode can serve as a highly efficient and stable electrocatalyst for the HER in water over a wide pH range. Significantly, it displays high-performance HER catalytic activity in acidic media with robust durability over 111 h and functions well under alkaline and neutral conditions. Such a superior catalytic performance of the a-Ni3S2@NPC is mainly due to the unique hierarchically nanoporous architectures and the synergetic effects in it caused by the restructuring NPC skeletons and active components. Our work offers a generic strategy for design and fabrication of many other self-supported transition metal sulfide and phosphide based HER electrocatalysts, and uncovers a new O2-induced electrochemical self-activation mechanism for improving the activity of catalysts.

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Section: Introductionmentioning

confidence: 99%

In-situ activation of self-supported 3D hierarchically porous Ni3S2 films grown on nanoporous copper as excellent pH-universal electrocatalysts for hydrogen evolution reaction

et al. 2017

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“…[2][3][4][5][6][7][8][9][10] Recently, some unusual ndings where a less noble metal is deposited on a more noble metal by electroless deposition, that is, a galvanic displacement reaction, have been reported. [11][12][13] As Lahiri et al pointed out, these kinds of galvanic displacement reactions could be triggered by forming metal ion complexes with the anions of ionic liquids, making the redox potentials in ionic liquids different to those of metal complexes in aqueous solution. 13 An electrochemical series in an aqueous system has been well established, and is available in the form of a standard electrode potential database.…”

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Building an electrochemical series of metals in pyrrolidinium-based ionic liquids

et al. 2020

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“…Galvanic displacement of nickel on copper was achieved using a deep eutectic solvent of ChCl and ethylene glycol mixtures (Yang et al, 2016). Nickel was shown to form [NiCl 4 ] 2− ions in the electrolyte which displaced copper, forming nickel metal and [CuCl 3 ] 2− ions.…”

Section: Electroless Deposition Of Non-noble Metalsmentioning

confidence: 99%

A Review on the Electroless Deposition of Functional Materials in Ionic Liquids for Batteries and Catalysis

2019

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Developing functional materials via electroless deposition, without the need of external energy is a fascinating concept. Electroless deposition can be subcategorized into galvanic displacement reaction, disproportionation reaction, and deposition in presence of reducing agents. Galvanic displacement reaction is a spontaneous reduction process wherein the redox potentials of the metal/metal ion in the electrolyte govern the thermodynamic feasibility of the process. In aqueous solutions, the galvanic displacement reaction takes place according to the redox potentials of the standard electrochemical series. In comparison, in the case of ionic liquids, galvanic displacement reaction can be triggered by forming metal ion complexes with the anions of the ionic liquids. Therefore, the redox potentials in ILs can be different to those of metal complexes in aqueous solutions. In this review, we highlight the progress in the electroless deposition of metals and semiconductors nanostructures, from ionic liquids and their application toward lithium/sodium batteries, and in catalysis.

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Facile fabrication of nickel nanostructures on a copper-based template via a galvanic replacement reaction in a deep eutectic solvent

Cited by 52 publications

References 38 publications

In-situ activation of self-supported 3D hierarchically porous Ni3S2 films grown on nanoporous copper as excellent pH-universal electrocatalysts for hydrogen evolution reaction

In-situ activation of self-supported 3D hierarchically porous Ni3S2 films grown on nanoporous copper as excellent pH-universal electrocatalysts for hydrogen evolution reaction

Building an electrochemical series of metals in pyrrolidinium-based ionic liquids

A Review on the Electroless Deposition of Functional Materials in Ionic Liquids for Batteries and Catalysis

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