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Article

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Title

Redox-active electrolytes as a viable approach for the one-step assembly of metal-ion capacitors

Authors

[ 1 ] Instytut Chemii i Elektrochemii Technicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ SzD ] doctoral school student | [ P ] employee

Scientific discipline (Law 2.0)

[7.6] Chemical sciences

Year of publication

2024

Published in

Energy Storage Materials

Journal year: 2024 | Journal volume: vol. 65

Article type

scientific article

Publication language

english

Keywords
EN
  • Lithium-ion capacitor
  • Sodium-ion capacitor
  • Potassium-ion capacitor
  • One-step preintercalation
  • Redox-active electrolyte
  • Metal-ion capacitor
Abstract

EN The assembly of metal-ion capacitors is a very challenging task; the use of traditional metallic electrodes or sacrificial materials induces technical problems during cell assembly or affects its normal operation. Here, we report an efficient, one-step method for assembling metal-ion capacitors using redox-active electrolytes with thiocyanate-based salts. The addition of a redox-active salt compensates for the charge on the positive electrode while enabling the insertion of metal ions into the structure of the negative electrode. The proposed approach reduces assembly time and cost and results in increased specific energy compared to that from the traditional two-step assembled hybrid systems. Furthermore, we demonstrate that the proposed approach can be successfully implemented for sodium-ion and potassium-ion hybrid capacitors. Our results are supported by operando techniques and can potentially facilitate further research on metal-ion capacitors and applications of these devices.

Date of online publication

26.12.2023

Pages (from - to)

103163-1 - 103163-9

DOI

10.1016/j.ensm.2023.103163

URL

https://www.sciencedirect.com/science/article/pii/S2405829723005408

Comments

Article number: 103163

License type

CC BY (attribution alone)

Open Access Mode

czasopismo hybrydowe

Open Access Text Version

final published version

Date of Open Access to the publication

at the time of publication

Full text of article

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Access level to full text

public

Ministry points / journal

200

Impact Factor

18,9 [List 2023]

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