# Improving the cycling performance of lithium-air batteries using a nitrite salt electrolyte

https://mdr.nims.go.jp/datasets/fe3fcb26-f02e-4072-ab9d-2aaaa796508c

## File

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## Id

fe3fcb26-f02e-4072-ab9d-2aaaa796508c

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-04-19T00:37:26.652845Z

## Updated at

2024-04-19T08:23:53.465922Z

## Published at

2026-04-11T23:21:21.129868Z

## Doi

https://doi.org/10.48505/nims.4486

## First published url

https://doi.org/10.1016/j.electacta.2024.144261

## Date published

2024-04-11

## Recorded date published

2024-6

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Improving the cycling performance of lithium-air batteries using a nitrite
    salt electrolyte
  title_type: original
  lang: en

## Description

- description: Developing high energy density lithium-air batteries (LABs) with sufficient
    cycle life is challenging due to the oxidative degradation of various battery
    components during charging. Lithium nitrate (LiNO3) has been commonly used as
    the electrolyte salt, both to protect the lithium anode and to generate NO2- anions
    that function as the redox mediator (RM) to reduce the charging voltage. However,
    this RM effect only minimally improves cycling performance because only a low
    NO2- concentration is produced. The use of lithium nitrite (LiNO2) as the supporting
    electrolyte salt could overcome this limitation. In the present study, 1 M solutions
    of LiNO3 or LiNO2 were prepared in tetraethylene glycol dimethyl ether (TEGDME)
    or N-methyl-2-pyrrolidone (NMP) as LAB electrolytes. Walden plots of these electrolytes
    established a higher degree of dissociation in the NMP, which had a greater dielectric
    constant, thus enhancing ionic conductivity. Electrochemical impedance spctroscopy
    determined that a LAB cell incorporating the LiNO2/NMP electrolyte exhibited reduced
    diffusion resistance during discharge-charge cycling as a consequence of the RM
    effect of NO2- anions. Microscopic observation and pore distribution analysis
    of cathodes confirmed that the clogging of pores was minimized with the LiNO2/NMP
    electrolyte. As a result, the LAB cell using this system showed the best performance,
    more than doubling the cycle life. Based on these data, LiNO2 is considered to
    be an effective electrolyte salt for use in LABs.
  description_type: abstract
  lang: eng

## Creator

- name: Shota Azuma
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Battery
    and Cell Materials Field/Rechargeable Battery Materials Group
  ror: https://ror.org/026v1ze26
- name: Mitsuki Sano
  role: author
  organization: Seikei University
- name: Itsuki Moro
  role: author
  organization: Seikei University
- name: Fumisato Ozawa
  role: author
  organization: Seikei University
- name: Morihiro Saito
  role: author
  organization: Seikei University
- name: Akihiro Nomura
  role: author
  orcid: https://orcid.org/0000-0001-5012-4739
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Battery
    and Cell Materials Field/Rechargeable Battery Materials Group
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: PERGAMON-ELSEVIER SCIENCE LTD

## Managing organization



## Keyword

- subject: Li-Air Battery
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-04-11
end_date: 2026-04-12

## Journal

- title: ELECTROCHIMICA ACTA
  issn: '00134686'
  volume: '489'
  article_number: '144261'

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