Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes

Wouter Dirk Badenhorst; Kuldeep; Laura Sanz; Catia Arbizzani; Lasse Murtomäki

doi:10.1016/j.egyr.2022.06.075

Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes

Wouter Dirk Badenhorst
, Kuldeep
, Laura Sanz
, Catia Arbizzani
, Lasse Murtomäki^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

10 Citations (Scopus)

140 Downloads (Pure)

Abstract

The ever-increasing demand for renewable energy storage has led to the development of many energy storage systems, such as redox flow batteries (RFBs), including vanadium, iron–chromium, and the copper redox flow battery (CuRFB). A multitude of materials and electrolytes have been investigated to improve the performance of the CuRFB using an in-house manufactured cell. Using carbon ink coatings for the negative electrode and modern ion exchange membranes (IEMs), this version of the CuRFB was improved to current efficiencies above 95% with high voltage efficiencies of up to 81%, thereby improving energy efficiency by nearly 9% over the previous state of the art at 20 mA cm ⁻². Additionally, the operating time of the CuRFB was significantly extended over 210 h of operation (50 cycles), 32% of the capacity remaining, without maintenance. Finally, stability of the new system with modern IEMs was proven by operation for over 1200 h operation, with over 300 charge and discharge cycles performed.

Original language	English
Pages (from-to)	8690-8700
Number of pages	11
Journal	Energy Reports
Volume	8
Early online date	4 Jul 2022
DOIs	https://doi.org/10.1016/j.egyr.2022.06.075
Publication status	Published - Nov 2022
MoE publication type	A1 Journal article-refereed

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Redox flow batteries
hybrid flow cell
ion exchange membrane
cyclic voltammetry
Renewable energy storage

Access to Document

10.1016/j.egyr.2022.06.075Licence: CC BY-NC-ND

1-s2.0-S2352484722012136-mainFinal published version, 3.8 MBLicence: CC BY-NC-ND

Cite this

@article{d560e03298424704af671e8785be3e18,

title = "Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes",

abstract = "The ever-increasing demand for renewable energy storage has led to the development of many energy storage systems, such as redox flow batteries (RFBs), including vanadium, iron–chromium, and the copper redox flow battery (CuRFB). A multitude of materials and electrolytes have been investigated to improve the performance of the CuRFB using an in-house manufactured cell. Using carbon ink coatings for the negative electrode and modern ion exchange membranes (IEMs), this version of the CuRFB was improved to current efficiencies above 95\% with high voltage efficiencies of up to 81\%, thereby improving energy efficiency by nearly 9\% over the previous state of the art at 20 mA cm −2. Additionally, the operating time of the CuRFB was significantly extended over 210 h of operation (50 cycles), 32\% of the capacity remaining, without maintenance. Finally, stability of the new system with modern IEMs was proven by operation for over 1200 h operation, with over 300 charge and discharge cycles performed. ",

keywords = "Redox flow batteries, hybrid flow cell, ion exchange membrane, cyclic voltammetry, Renewable energy storage",

author = "Badenhorst, \{Wouter Dirk\} and Kuldeep and Laura Sanz and Catia Arbizzani and Lasse Murtom{\"a}ki",

note = "| openaire: EC/H2020/875605/EU//CUBER",

year = "2022",

month = nov,

doi = "10.1016/j.egyr.2022.06.075",

language = "English",

volume = "8",

pages = "8690--8700",

journal = "Energy Reports",

issn = "2352-4847",

publisher = "Elsevier",

}

TY - JOUR

T1 - Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes

AU - Badenhorst, Wouter Dirk

AU - Kuldeep, null

AU - Sanz, Laura

AU - Arbizzani, Catia

AU - Murtomäki, Lasse

N1 - | openaire: EC/H2020/875605/EU//CUBER

PY - 2022/11

Y1 - 2022/11

N2 - The ever-increasing demand for renewable energy storage has led to the development of many energy storage systems, such as redox flow batteries (RFBs), including vanadium, iron–chromium, and the copper redox flow battery (CuRFB). A multitude of materials and electrolytes have been investigated to improve the performance of the CuRFB using an in-house manufactured cell. Using carbon ink coatings for the negative electrode and modern ion exchange membranes (IEMs), this version of the CuRFB was improved to current efficiencies above 95% with high voltage efficiencies of up to 81%, thereby improving energy efficiency by nearly 9% over the previous state of the art at 20 mA cm −2. Additionally, the operating time of the CuRFB was significantly extended over 210 h of operation (50 cycles), 32% of the capacity remaining, without maintenance. Finally, stability of the new system with modern IEMs was proven by operation for over 1200 h operation, with over 300 charge and discharge cycles performed.

AB - The ever-increasing demand for renewable energy storage has led to the development of many energy storage systems, such as redox flow batteries (RFBs), including vanadium, iron–chromium, and the copper redox flow battery (CuRFB). A multitude of materials and electrolytes have been investigated to improve the performance of the CuRFB using an in-house manufactured cell. Using carbon ink coatings for the negative electrode and modern ion exchange membranes (IEMs), this version of the CuRFB was improved to current efficiencies above 95% with high voltage efficiencies of up to 81%, thereby improving energy efficiency by nearly 9% over the previous state of the art at 20 mA cm −2. Additionally, the operating time of the CuRFB was significantly extended over 210 h of operation (50 cycles), 32% of the capacity remaining, without maintenance. Finally, stability of the new system with modern IEMs was proven by operation for over 1200 h operation, with over 300 charge and discharge cycles performed.

KW - Redox flow batteries

KW - hybrid flow cell

KW - ion exchange membrane

KW - cyclic voltammetry

KW - Renewable energy storage

UR - https://www.scopus.com/pages/publications/85133470973

U2 - 10.1016/j.egyr.2022.06.075

DO - 10.1016/j.egyr.2022.06.075

M3 - Article

SN - 2352-4847

VL - 8

SP - 8690

EP - 8700

JO - Energy Reports

JF - Energy Reports

ER -

Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes

Abstract

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

CUBER: Advanced Redox Flow Batteries for stationary energy storage

Research Reports on Energy from Aalto University Provide New Insights (Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes)

All-copper Flow Batteries

Control-Oriented Electrochemical Model and Parameter Estimation for an All-Copper Redox Flow Battery

Cite this

Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes

Abstract

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Projects

CUBER: Advanced Redox Flow Batteries for stationary energy storage

Press/Media

Research Reports on Energy from Aalto University Provide New Insights (Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes)

Research output

All-copper Flow Batteries

Control-Oriented Electrochemical Model and Parameter Estimation for an All-Copper Redox Flow Battery

Cite this