# Mechanistic Analysis of Lithium-Air Battery with Organic Redox Mediator-Coated Air-Electrode

https://mdr.nims.go.jp/datasets/90865d49-2056-4d94-9569-9cfcf51db97b

## File

- [Azuma+et+al_2024_J._Electrochem._Soc._10.1149_1945-7111_ad7f92.pdf](https://mdr.nims.go.jp/filesets/61548f97-ce37-4480-b03a-6c33387f77bf/download) ([Detail](https://mdr.nims.go.jp/filesets/61548f97-ce37-4480-b03a-6c33387f77bf.md))

## Id

90865d49-2056-4d94-9569-9cfcf51db97b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-10T00:10:55.644583Z

## Updated at

2025-10-21T06:50:56.117390Z

## Published at

2025-10-21T06:43:09.626671Z

## Doi

https://doi.org/10.48505/nims.4833

## First published url

https://doi.org/10.1149/1945-7111/ad7f92

## Date published

2024-10-01

## Recorded date published

2024-10-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Mechanistic Analysis of Lithium-Air Battery with Organic Redox Mediator-Coated
    Air-Electrode
  title_type: original
  lang: en

## Description

- description: Redox mediators (RMs) suppress the charging overpotential to enhance
    the cycle performance of lithium-air batteries (LABs), but inappropriate RM incorporation
    can adversely shorten the cycle life. In this study, three typical organic RMs
    of tetrathiafulvalene (TTF), 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO), and
    10-methylphenothiazine (MPT) were incorporated into the air-electrode of LAB (RM-on-AE),
    rather than dissolving them in the electrolyte (RM-in-EL), to maximize the RM
    effect throughout the cycle life. The discharge/charge cycle test clarified that
    the cells with RM-on-AE prevented the reductive decomposition of RM with lithium
    anode, deriving the RM effect for longer cycle life than the cells with RM-in-EL.
    The quantification of AE deposits revealed that the TTF- and TEMPO-on-AE cells
    hardly generated a quantitative amount of Li2O2 discharge product, while the MPT-on-AE
    provided 96% yield of Li2O2 after discharge. The quantitative analysis also revealed
    an accumulation of Li2CO3 on the AEs, along with the generation of carboxylate.
    Because this was also true for the MPT-on-AE cells, further improvement of oxidative
    tolerance is needed for the substantial increase on the battery cycle life. This
    study provides appropriate RM introduction for the development of long-life LABs.
  description_type: abstract
  lang: und

## Creator

- name: Shota Azuma
  role: author
  orcid: https://orcid.org/0009-0004-7865-1425
- name: Itsuki Moro
  role: author
- name: Mitsuki Sano
  role: author
- name: Fumisato Ozawa
  role: author
  orcid: https://orcid.org/0009-0008-7214-0885
- name: Morihiro Saito
  role: author
  orcid: https://orcid.org/0000-0001-7062-8336
- name: Akihiro Nomura
  role: author
  orcid: https://orcid.org/0000-0001-5012-4739

## Contact agent



## Publisher

organization: The Electrochemical Society

## Managing organization



## Keyword

- subject: redox-mediator, lithium-air, battery, air-electrode
  schema: not_defined

## Rights

- description: This is the Accepted Manuscript version of an article accepted for
    publication in Journal of The Electrochemical Society. IOP Publishing Ltd is not
    responsible for any errors or omissions in this version of the manuscript or any
    version derived from it.  The Version of Record is available online at  https://doi.org/10.1149/1945-7111/ad7f92.
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-10-09
end_date: 2025-10-09

## Journal

- title: Journal of The Electrochemical Society
  issn: '00134651'
  volume: '171'
  issue: '10'
  article_number: '100511'

## Conference



## Related item



## Funding

- identifier: JPMJAL1301
  funder_name: Advanced Low Carbon Technology Research and Development Program

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



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## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



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## Fileset

- id: 61548f97-ce37-4480-b03a-6c33387f77bf
  filename: Azuma+et+al_2024_J._Electrochem._Soc._10.1149_1945-7111_ad7f92.pdf
  content_type: application/pdf
  size: 3264266
  md5: 055d1a679572051950cb552c57c4efb8

## Thumbnail

fileset_id: 61548f97-ce37-4480-b03a-6c33387f77bf
filename: Azuma+et+al_2024_J._Electrochem._Soc._10.1149_1945-7111_ad7f92.pdf