# Effects of Particle Size and Polytype on the Redox Reversibility of the Layered Na<sub>0.76</sub>Ni<sub>0.38</sub>Mn<sub>0.62</sub>O<sub>2</sub> Electrode

https://mdr.nims.go.jp/datasets/8b71188d-a213-40c0-910e-180e8d2ba271

## File

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## Id

8b71188d-a213-40c0-910e-180e8d2ba271

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-01-07T04:27:01.679709Z

## Updated at

2025-01-08T07:30:33.598008Z

## Published at

2025-01-08T07:30:33.728926Z

## Doi



## First published url

https://doi.org/10.1021/acsaem.3c02462

## Date published

2024-02-12

## Recorded date published

2024-2-12

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Effects of Particle Size and Polytype on the Redox Reversibility of the Layered
    Na<sub>0.76</sub>Ni<sub>0.38</sub>Mn<sub>0.62</sub>O<sub>2</sub> Electrode
  title_type: original
  lang: en

## Description

- description: Layered sodium nickel manganese oxides (NaxNiyMn1-yO2) have gained
    great interest as one of the positive electrode materials in sodium ion batteries
    towards sustainable energy storage systems. However, significant capacity fade
    of those materials necessities to be solved. Partial substitutions for Ni and
    Mn at the expense of delivered capacity have been widely suggested to address
    the poor cycle life, whereas relatively little investigation on particle morphology
    and/or surface engineering has been carried out. Herein, P3- and P2-type Na0.76Ni0.38Mn0.62O2
    powders were prepared using 4 µm and 10 µm (Ni0.38Mn0.62)(OH)2 precursors to understand
    the influence of primary and secondary particle sizes and polytypes on their electrochemical
    performance in Na cells. P3-type Na0.76Ni0.38Mn0.62O2 with smaller primary particles
    and the absence of impurity leads to superior cyclability and rate capability
    than P2-type one. Besides, larger secondary particles improve cycling performance
    in both polytypes. Formation of microcracks is inevitable over 100 cycles, especially
    with the upper cut-off voltage of 4.4 V, however more severe pulverization and
    microcracks are shown in 4 µm P3-type Na0.76Ni0.38Mn0.62O2 compared to 10 µm P3-type
    Na0.76Ni0.38Mn0.62O2. The severity in prevalent microcracks, rapid growth of resistance
    over cycling as well as aging, and CO2 gas release upon charge to 4.4 V supports
    the degradation of 4 µm P3-type Na0.76Ni0.38Mn0.62O2 driven by parasitic surface
    reactions, causing capacity fade.
  description_type: abstract
  lang: und

## Creator

- name: Eun Jeong Kim
  role: author
- name: Ryoichi Tatara
  role: author
- name: Tomooki Hosaka
  role: author
- name: Kei Kubota
  role: author
  orcid: https://orcid.org/0000-0001-8941-3650
  organization: National Institute for Materials Science
- name: Shinichi Kumakura
  role: author
- name: Shinichi Komaba
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: sodium-ion batteries
  schema: not_defined
- subject: " P3-type"
  schema: not_defined
- subject: P2-type
  schema: not_defined
- subject: " secondary particle size"
  schema: not_defined
- subject: moisture sensitivity
  schema: not_defined
- subject: microcracks
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: ACS Applied Energy Materials
  issn: '25740962'
  volume: '7'
  issue: '3'
  start_page: 1015
  end_page: 1026

## Conference



## Related item



## Funding

- identifier: JPMXP 1122712807
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMJCR21O6
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JP20H02849
  funder_name: Japan Society for the Promotion of Science
- identifier: JP21K14724
  funder_name: Japan Society for the Promotion of Science
- identifier: JP21K20561
  funder_name: Japan Society for the Promotion of Science
- identifier: JP22K14772
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23K13829
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: a661dae0-220d-43f3-a566-c5e3e31032e9
  filename: kim-et-al-2024-effects-of-particle-size-and-polytype-on-the-redox-reversibility-of-the-layered-na0-76ni0-38mn0-62o2
    (1).pdf
  content_type: application/pdf
  size: 11936790
  md5: 730324e7266362da720f3cd617e131c4

## Thumbnail

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filename: kim-et-al-2024-effects-of-particle-size-and-polytype-on-the-redox-reversibility-of-the-layered-na0-76ni0-38mn0-62o2
  (1).pdf