Electrochemistry in bicontinuous microemulsions derived from two immiscible electrolyte solutions for a membrane-free redox flow battery

Nakao, Kodai; Noda, K.; Hashimoto, Hinako; Nakagawa, Mayuki; Nishimi, Taisei; Ohira, Akihiro; Sato, Yukari; Kato, Dai; Kamata, Toshihide; Niwa, Osamu; Kunitake, Masashi

doi:10.1016/j.jcis.2023.03.060

Cited by 13 publications

(2 citation statements)

References 56 publications

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“…20 However, there are reports of flow batteries in membrane-less configurations using bicontinuous microemulsions. 21 Although aqueous flow batteries (AFBs) have several advantages, they have one major challenge associated with low volumetric energy efficiency. 22,23 To address these issues, several methodologies have been proposed, which include choosing molecules with low molecular weight and dense electroactive sites to achieve high-specific capacity, integrating extra moieties in redox-active species to enhance the solubility, employment of low-temperature electrolytes, electrode modifications, chemical regeneration of active species in external tanks etc.…”

Section: Introductionmentioning

confidence: 99%

Electrostatically driven unidirectional molecular flux for high performance alkaline flow batteries

Nayak¹,

Mondal²,

Thotiyl³

2023

Nanoscale

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Section: Introductionmentioning

confidence: 99%

Electrostatically driven unidirectional molecular flux for high performance alkaline flow batteries

Nayak¹,

Mondal²,

Thotiyl³

2023

Nanoscale

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“…These disadvantages could be overcome with microemulsion-based systems employing low volatility organic solvents, if ionic conduction could be realized in the less resistive aqueous phase. 36,37 Exploring various alternative membranes to achieve solution separation without relying on Nafion, we found that the exclusive use of Nafion in the flow battery cell prevented solution mixing (more details in the ESI†).…”

mentioning

confidence: 99%

Boosting the cell voltage in biphasic flow batteries via Galvani potential difference

Abbasi,

Peljo

2024

Phys. Chem. Chem. Phys.

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Graphene‐based Supercapacitor Using Microemulsion Electrolyte

Salisu,

Hughson,

Borah

et al. 2024

Batteries & Supercaps

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Graphene‐like material prepared by a facile combustion synthesis was investigated as an electrode material in a microemulsion electrolyte. Notably, a stable voltage window of 2.2–2.4 V was achieved, surpassing previous reports for aqueous‐based electrolytes on similar materials. The fabricated supercapacitor device exhibited a commendable specific capacitance values of 59 F g−1 at 0.1 A g−1 and 32 F g−1 at 5 A g−1, indicating its potential for high‐current applications. Mechanistic examination revealed that the charge storage primarily relies on electric double‐layer formation, with minor non‐capacitive contribution from electrode surface functionalities and the supporting electrolyte. Further analysis showed significant capacitive contributions of 85 % at 2.2 V and 67 % at 2.4 V, underscoring the dominance of the capacitive process. The fabricated supercapacitor's stability indicated a decrease as the non‐capacitive process intensified, suggesting that electrode surface functionalities predominantly contribute to cell deterioration at elevated potentials. These results highlight the potential efficacy of microemulsion electrolytes in energy storage applications.

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Electrochemistry in bicontinuous microemulsions derived from two immiscible electrolyte solutions for a membrane-free redox flow battery

Cited by 13 publications

References 56 publications

Electrostatically driven unidirectional molecular flux for high performance alkaline flow batteries

Electrostatically driven unidirectional molecular flux for high performance alkaline flow batteries

Boosting the cell voltage in biphasic flow batteries via Galvani potential difference

Graphene‐based Supercapacitor Using Microemulsion Electrolyte

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