Ion transfer battery: storing energy by transferring ions across liquid–liquid interfaces

Peljo, Pekka; Bichon, Marie; Girault, Hubert H.

doi:10.1039/c6cc04325a

Cited by 27 publications

(35 citation statements)

References 20 publications

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“…In most of the above systems, the cell voltage of the battery is attributed to the difference in the redox potentials of the redox couples. Peljo et al [111] proposed an ion-transfer battery based on the potential differences of the two phases. The proposed battery consists of two organic redox electrolytes of decamethylferrocene (DMFc, C20H30Fe) and decaethylferrocene tetrakis (penta-fluorophenyl)borate (DMFcTB, C44H30BF20Fe) (0.1 mol dm -3 ), which are separated by an immiscible aqueous phase (1 mol dm -3 LiClO4 and 0.1 mol dm -3 LiOH).…”

Section: Organometallic Based Immiscible Electrolyte Batteriesmentioning

confidence: 99%

Recent developments in organic redox flow batteries: A critical review

Leung

Shah

Sanz

et al. 2017

Journal of Power Sources

444

318

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Redox flow batteries (RFBs) have emerged as prime candidates for energy storage on the medium and large scales, particularly at the grid scale. The demand for versatile energy storage continues to increase as more electrical energy is generated from intermittent renewable sources. A major barrier in the way of broad deployment and deep market penetration is the use of expensive metals as the active species in the electrolytes. The use of organic redox couples in aqueous or nonaqueous electrolytes is a promising approach to reducing the overall cost in long-term, since these materials are low-cost and abundant. The performance of such redox couples can be tuned by modifying their chemical structure. In recent years, significant developments in organic redox flow batteries has taken place, with the introduction of new groups of highly soluble organic molecules, capable of providing a cell voltage and charge capacity comparable to conventional metal-based systems. This review summarises the fundamental developments and characterization of organic redox flow batteries from both the chemistry and materials perspectives. The latest advances, future challenges and opportunities for further development are discussed. Metal deposition or anode in one half-celli.e. Lithium/ organic hybrid FB Metal 'This review'

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Section: Organometallic Based Immiscible Electrolyte Batteriesmentioning

confidence: 99%

Recent developments in organic redox flow batteries: A critical review

Leung

Shah

Sanz

et al. 2017

Journal of Power Sources

444

318

View full text Add to dashboard Cite

show abstract

“…In those hybrid systems it is not possible to fully decouple power and energy, being one of the most important advantage of RFBs . Girault and co‐workers reported an ion transfer battery utilizing the Galvani potential difference between liquid–liquid interphases in a nonaqueous/aqueous/nonaqueous triphasic system. Unlikely, our membrane‐free battery is based on two immiscible phases and the voltage of this battery exclusively depends on the difference of redox potential of active species dissolved in catholyte and anolyte, as in any type of RFB.…”

Section: Introductionmentioning

confidence: 99%

Pioneering Use of Ionic Liquid‐Based Aqueous Biphasic Systems as Membrane‐Free Batteries

et al. 2018

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Aqueous biphasic systems (ABS) formed by water, ionic liquids (ILs), and salts, in which the two phases are water rich, are demonstrated here to act as potential membrane‐free batteries. This concept is feasible due to the selective enrichment of redox organic molecules in each aqueous phase of ABS, which spontaneously form two liquid‐phases above given concentrations of salt and IL. Therefore, the required separation of electrolytes in the battery is not driven by an expensive membrane that hampers mass transfer, but instead, by the intrinsic immiscibility of the two liquid phases. Moreover, the crosscontamination typically occurring through the ineffective membranes is determined by the partition coefficients of the active molecules between the two phases. The phase diagrams of a series of IL‐based ABS are characterized, the partition coefficients of several redox organic molecules are determined, and the electrochemistry of these redox‐active immiscible phases is evaluated, allowing appraisal of the battery performance. Several redox ABS that may be used in total aqueous membrane‐free batteries with theoretical battery voltages as high as 1.6 V are identified. The viability of a membrane‐free battery composed of an IL‐based ABS containing methyl viologen and 2,2,6,6‐tetramethyl‐1‐piperidinyloxy as active species is demonstrated.

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“…However, as long as the anolyte and catholyte molecules on the interface are constantly in contact, this strategy still leads to higher indexes of self-discharge, which currently is one of the major drawbacks to be surpassed [228][229][230]. Despite there being some more advanced strategies to use the immiscible membraneless configuration, e.g., two nonaqueous phases separated by an aqueous phase, these devices are still on the laboratory scale due to their low energy density, solvent evaporation (which leads to unstable CDC), high ohmic resistance, and reliance on flammable organic solvents [231].…”

Section: Membranelessmentioning

confidence: 99%

Redox Flow Batteries: Materials, Design and Prospects

et al. 2021

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The implementation of renewable energy sources is rapidly growing in the electrical sector. This is a major step for civilization since it will reduce the carbon footprint and ensure a sustainable future. Nevertheless, these sources of energy are far from perfect and require complementary technologies to ensure dispatchable energy and this requires storage. In the last few decades, redox flow batteries (RFB) have been revealed to be an interesting alternative for this application, mainly due to their versatility and scalability. This technology has been the focus of intense research and great advances in the last decade. This review aims to summarize the most relevant advances achieved in the last few years, i.e., from 2015 until the middle of 2021. A synopsis of the different types of RFB technology will be conducted. Particular attention will be given to vanadium redox flow batteries (VRFB), the most mature RFB technology, but also to the emerging most promising chemistries. An in-depth review will be performed regarding the main innovations, materials, and designs. The main drawbacks and future perspectives for this technology will also be addressed.

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Ion transfer battery: storing energy by transferring ions across liquid–liquid interfaces

Abstract: A battery in which the cell voltage is generated or enhanced by a Galvani potential difference between two liquid–liquid interfaces.

Cited by 27 publications

References 20 publications

Recent developments in organic redox flow batteries: A critical review

Recent developments in organic redox flow batteries: A critical review

Pioneering Use of Ionic Liquid‐Based Aqueous Biphasic Systems as Membrane‐Free Batteries

Redox Flow Batteries: Materials, Design and Prospects

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