Solid electrochemical energy storage for aqueous redox flow batteries: The case of copper hexacyanoferrate

Elena Zanzola; Solène Gentil; Grégoire Gschwend; Danick Reynard; Evgeny Smirnov; C. R. Dennison; Hubert H. Girault; Pekka Peljo

doi:10.1016/j.electacta.2019.134704

Solid electrochemical energy storage for aqueous redox flow batteries: The case of copper hexacyanoferrate

Elena Zanzola, Solène Gentil, Grégoire Gschwend, Danick Reynard, Evgeny Smirnov, C. R. Dennison, Hubert H. Girault, Pekka Peljo^*

^*Tämän työn vastaava kirjoittaja

Kemian ja materiaalitieteen laitos

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

32 Sitaatiot (Scopus)

193 Lataukset (Pure)

Abstrakti

All redox flow batteries suffer from low energy storage density in comparison with conventional Li-ion batteries. However, this issue can be mitigated by utilization of solid energy storage materials to enhance the energy storage capacity. In this paper we demonstrate the utilization of copper hexacyanoferrate (CuHCF) Prussian blue analogue for this purpose, coupled with N,N,N-2,2,6,6-heptamethylpiperidinyl oxy-4-ammonium chloride (TEMPTMA) as a soluble redox mediator to target the redox transitions of the solid material. In this case, indirect charging and discharging of CuHCF suspended in the electrolyte by electrochemically oxidized/reduced TEMPTMA was observed by chronoamperometry. Secondly, electrochemistry of different CuHCF composites with carbon black and multi-walled carbon nanotubes were investigated, highlighting that the high conductivity of the solid energy storage materials is crucial to access the maximal charge storage capacity. Finally, a CuHCF-TEMPTMA/Zn aqueous redox flow battery achieved stable cycling performances with high coulombic efficiency of 95% and volumetric capacity of 350 C mL⁻¹.

Alkuperäiskieli	Englanti
Artikkeli	134704
Julkaisu	Electrochimica Acta
Vuosikerta	321
DOI - pysyväislinkit	https://doi.org/10.1016/j.electacta.2019.134704
Tila	Julkaistu - 20 lokak. 2019
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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10.1016/j.electacta.2019.134704

CHEM-Zanzola et al-Solid electrochemical energy-2019-ElecActaAccepted author manuscript, 1,08 MBLisenssi: CC BY-NC-ND

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redoxSolid Flow: Kiinteiden redox aktiivisten materiaalien hyödyntäminen ja in operando karakterisointi energiatiheissä virtaus-akuissa
Peljo, P. (Vastuullinen tutkija)
01/09/2018 → 31/08/2020
Projekti: Academy of Finland: Other research funding

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title = "Solid electrochemical energy storage for aqueous redox flow batteries: The case of copper hexacyanoferrate",

abstract = "All redox flow batteries suffer from low energy storage density in comparison with conventional Li-ion batteries. However, this issue can be mitigated by utilization of solid energy storage materials to enhance the energy storage capacity. In this paper we demonstrate the utilization of copper hexacyanoferrate (CuHCF) Prussian blue analogue for this purpose, coupled with N,N,N-2,2,6,6-heptamethylpiperidinyl oxy-4-ammonium chloride (TEMPTMA) as a soluble redox mediator to target the redox transitions of the solid material. In this case, indirect charging and discharging of CuHCF suspended in the electrolyte by electrochemically oxidized/reduced TEMPTMA was observed by chronoamperometry. Secondly, electrochemistry of different CuHCF composites with carbon black and multi-walled carbon nanotubes were investigated, highlighting that the high conductivity of the solid energy storage materials is crucial to access the maximal charge storage capacity. Finally, a CuHCF-TEMPTMA/Zn aqueous redox flow battery achieved stable cycling performances with high coulombic efficiency of 95% and volumetric capacity of 350 C mL−1.",

keywords = "Aqueous organic redox flow batteries, Prussian blue analogue, Redox mediator, Solid energy storage material",

author = "Elena Zanzola and Sol{\`e}ne Gentil and Gr{\'e}goire Gschwend and Danick Reynard and Evgeny Smirnov and Dennison, {C. R.} and Girault, {Hubert H.} and Pekka Peljo",

year = "2019",

month = oct,

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doi = "10.1016/j.electacta.2019.134704",

language = "English",

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journal = "Electrochimica Acta",

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TY - JOUR

T1 - Solid electrochemical energy storage for aqueous redox flow batteries

T2 - The case of copper hexacyanoferrate

AU - Zanzola, Elena

AU - Gentil, Solène

AU - Gschwend, Grégoire

AU - Reynard, Danick

AU - Smirnov, Evgeny

AU - Dennison, C. R.

AU - Girault, Hubert H.

AU - Peljo, Pekka

PY - 2019/10/20

Y1 - 2019/10/20

N2 - All redox flow batteries suffer from low energy storage density in comparison with conventional Li-ion batteries. However, this issue can be mitigated by utilization of solid energy storage materials to enhance the energy storage capacity. In this paper we demonstrate the utilization of copper hexacyanoferrate (CuHCF) Prussian blue analogue for this purpose, coupled with N,N,N-2,2,6,6-heptamethylpiperidinyl oxy-4-ammonium chloride (TEMPTMA) as a soluble redox mediator to target the redox transitions of the solid material. In this case, indirect charging and discharging of CuHCF suspended in the electrolyte by electrochemically oxidized/reduced TEMPTMA was observed by chronoamperometry. Secondly, electrochemistry of different CuHCF composites with carbon black and multi-walled carbon nanotubes were investigated, highlighting that the high conductivity of the solid energy storage materials is crucial to access the maximal charge storage capacity. Finally, a CuHCF-TEMPTMA/Zn aqueous redox flow battery achieved stable cycling performances with high coulombic efficiency of 95% and volumetric capacity of 350 C mL−1.

AB - All redox flow batteries suffer from low energy storage density in comparison with conventional Li-ion batteries. However, this issue can be mitigated by utilization of solid energy storage materials to enhance the energy storage capacity. In this paper we demonstrate the utilization of copper hexacyanoferrate (CuHCF) Prussian blue analogue for this purpose, coupled with N,N,N-2,2,6,6-heptamethylpiperidinyl oxy-4-ammonium chloride (TEMPTMA) as a soluble redox mediator to target the redox transitions of the solid material. In this case, indirect charging and discharging of CuHCF suspended in the electrolyte by electrochemically oxidized/reduced TEMPTMA was observed by chronoamperometry. Secondly, electrochemistry of different CuHCF composites with carbon black and multi-walled carbon nanotubes were investigated, highlighting that the high conductivity of the solid energy storage materials is crucial to access the maximal charge storage capacity. Finally, a CuHCF-TEMPTMA/Zn aqueous redox flow battery achieved stable cycling performances with high coulombic efficiency of 95% and volumetric capacity of 350 C mL−1.

KW - Aqueous organic redox flow batteries

KW - Prussian blue analogue

KW - Redox mediator

KW - Solid energy storage material

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U2 - 10.1016/j.electacta.2019.134704

DO - 10.1016/j.electacta.2019.134704

M3 - Article

AN - SCOPUS:85071232311

SN - 0013-4686

VL - 321

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 134704

ER -

Solid electrochemical energy storage for aqueous redox flow batteries: The case of copper hexacyanoferrate

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Projektit

redoxSolid Flow: Kiinteiden redox aktiivisten materiaalien hyödyntäminen ja in operando karakterisointi energiatiheissä virtaus-akuissa

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