Electrodeposition of rhenium with suppressed hydrogen evolution from water-in-salt electrolyte

Huang, Qiang; Lyons, T. W.

doi:10.1016/j.elecom.2018.06.003

Cited by 31 publications

(12 citation statements)

References 22 publications

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“…With only a few exceptions, where super-concentrated electrolytes were used as synthesis media, or supporting electrolytes for electrochemical actuators, sensors or electrodeposition, [92][93][94] majority of the efforts to explore super-concentration were driven by their potential applications in energy storage systems, batteries in particular. Some of the benefits brought by super-concentration has been described in previous sections when discussing their related properties (Figure 4C).…”

Section: Super-concentration and Battery Performancesmentioning

confidence: 99%

Uncharted Waters: Super-Concentrated Electrolytes

Borodin

Self

Persson

et al. 2020

Joule

404

373

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As a legacy left behind by classical analytical electrochemistry in pursuit of ideal electrodics, and classical physical electrochemistry in pursuit of the most conductive ionics, the study of non-aqueous electrolytes has been historically confined within a narrow concentration regime around 1 molarity (M). This confinement was breached in recent years when unusual properties were found to arise from the excessive salt presence, which often bring benefits to electrochemical, thermal, transport, interfacial, and interphasial properties that are of significant interest to the electrochemical energy storage community. This article provides an overview on this newly discovered and under-explored realm, with emphasis placed on their applications in rechargeable batteries.

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Section: Super-concentration and Battery Performancesmentioning

confidence: 99%

Uncharted Waters: Super-Concentrated Electrolytes

Borodin

Self

Persson

et al. 2020

Joule

404

373

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“…Nowadays, most of the studies regarding rhenium are related to bulk surfaces of solid commercial electrodes ,− or rhenium surfaces obtained electrochemically on different substrates, such as Pt, − Au, Cu, ITO, and Si. , The first result of the application of a rhenium electrode for HER was reported in 1975 by Miles and co-workers , that described higher catalytic activity than Os, Ru, and Ni and lower activity than Pd, Pt, Rh, and Ir in 0.1 M H 2 SO 4 with an HER overpotential (η HER ) value of 544 mV at η 2 , respectively. It was not until 2016 that Garcia–Garcia et al reported an onset potential for H 2 of 350 mV, with an overpotential of 470 mV at η 2 , being the first promising data on the catalytic activity of Re in an acidic medium (0.5 M H 2 SO 4 ).…”

Section: Rhenium Bulk Substrates Used In Early Electrochemical Studiesmentioning

confidence: 99%

Rhenium-Based Electrocatalysts for Water Splitting

et al. 2023

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Due to the contamination and global warming problems, it is necessary to search for alternative environmentally friendly energy sources. In this area, hydrogen is a promising alternative. Hydrogen is even more promising, when it is obtained through water electrolysis operated with renewable energy sources. Among the possible devices to perform electrolysis, proton exchange membrane (PEM) electrolyzers appear as the most promising commercial systems for hydrogen production in the coming years. However, their massification is affected by the noble metals used as electrocatalysts in their electrodes, with high commercial value: Pt at the cathode where the hydrogen evolution reaction occurs (HER) and Ru/Ir at the anode where the oxygen evolution reaction (OER) happens. Therefore, to take full advantage of the PEM technology for green H 2 production and build up a mature PEM market, it is imperative to search for more abundant, cheaper, and stable catalysts, reaching the highest possible activities at the lowest overpotential with the longest stability under the harsh acidic conditions of a PEM. In the search for new electrocatalysts and considering the predictions of a Trasatti volcano plot, rhenium appears to be a promising candidate for HER in acidic media. At the same time, recent studies provide evidence of its potential as an OER catalyst. However, some of these reports have focused on chemical and photochemical water splitting and have not always considered acidic media. This review summarizes rhenium-based electrocatalysts for water splitting under acidic conditions: i.e., potential candidates as cathode materials. In the various sections, we review the mechanism concepts of electrocatalysis, evaluation methods, and the different rhenium-based materials applied for the HER in acidic media. As rhenium is less common for the OER, we included a section about its use in chemical and photochemical water oxidation and as an electrocatalyst under basic conditions. Finally, concluding remarks and perspectives are given about rhenium for water splitting.

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“…Although aqueous rechargeable battery based on water‐in‐salt might be questionable, application of such electrolyte in other electrochemical technologies could be possible and of interest. For example, water‐in‐salt could be attractive medium for electrodeposition of metals, as demonstrated for rhenium [110] and zinc [52] . In the case of zinc, their electrodeposition has been mainly investigated in relation to aqueous zinc battery.…”

Section: Summary and Perspectivesmentioning

confidence: 99%

Physicochemical and Electrochemical Properties of Water‐in‐Salt Electrolytes

Amiri

Bélanger

2021

ChemSusChem

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Aqueous electrolytes are attractive for applications in electrochemical technologies due to features like being eco‐friendly, cost effective, and non‐flammable. Very recently, superconcentrated aqueous electrolytes, such as so‐called water‐in‐salt, water‐in‐bisalt, and hydrate melt, have received a significant attention for electrochemical energy storage due to enhanced stability and much wider electrochemical stability window. This Review focuses on the physicochemical properties of the highly concentrated electrolytes that are derived from several analysis techniques and simulation. A summary of most common features such as ions‐water interactions, structure of species present in the electrolyte, conductivity, and viscosity of the electrolytes found in the literature are presented as well. In addition, this Review explains how these characteristics affect the electrochemical behavior of the electrolyte such as double layer structure and electrode/electrolyte interface leading to enhanced electrochemical stability of aqueous electrolytes.

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Electrodeposition of rhenium with suppressed hydrogen evolution from water-in-salt electrolyte

Cited by 31 publications

References 22 publications

Uncharted Waters: Super-Concentrated Electrolytes

Uncharted Waters: Super-Concentrated Electrolytes

Rhenium-Based Electrocatalysts for Water Splitting

Physicochemical and Electrochemical Properties of Water‐in‐Salt Electrolytes

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