# Electrochemical Lithiation Mechanism of Nickel Silicide Electrode

https://mdr.nims.go.jp/datasets/2bfa4d4e-e7bf-4def-9d01-c811b019bf85

## File

- [93_25-00015.pdf](https://mdr.nims.go.jp/filesets/cfe68821-321b-4116-b4be-0a35463e0e23/download) ([Detail](https://mdr.nims.go.jp/filesets/cfe68821-321b-4116-b4be-0a35463e0e23.md))

## Id

2bfa4d4e-e7bf-4def-9d01-c811b019bf85

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-04-18T03:13:50.544188Z

## Updated at

2025-04-20T08:34:42.808657Z

## Published at

2025-04-20T08:17:39.397627Z

## Doi



## First published url

https://doi.org/10.5796/electrochemistry.25-00015

## Date published

2025-03-29

## Recorded date published

2025

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Electrochemical Lithiation Mechanism of Nickel Silicide Electrode
  title_type: original
  lang: en

## Description

- description: Pure silicide electrodes have attracted attention as a promising anode
    material in lithium-ion batteries using certain ionic liquid electrolytes. However,
    the reaction mechanisms of the silicide electrodes, in particular the lithiation
    sites in the crystal lattice and the reaction parts (bulk or surface), are still
    unclear. Here, we investigated the electrochemical lithiation mechanism of an
    NiSi2 electrode. It is revealed that no phase separation of NiSi2 occurred and
    no lithiation of Si generated from NiSi2 arose by X-ray diffraction, transmission
    electron microscopy and so on. In contrast, 7Li magic angle spinning nuclear magnetic
    resonance demonstrated that stable deposition-dissolution of Li metal did not
    occur on the NiSi2 electrode and the electrochemical lithiation of NiSi2 itself
    proceeded. Additionally, we investigated the lithiation sites based on the computational
    chemistry. The peak positions that appeared in the NMR spectra were different
    from those predicted by the calculated valence electron numbers. This is due to
    the increase in conduction electrons near the Fermi energy associated with the
    amount of Li stored in the NiSi2 crystal lattice and the followed by Knight shift.
  description_type: abstract
  lang: und

## Creator

- name: Yasuhiro DOMI
  role: author
  orcid: https://orcid.org/0000-0003-3983-2202
- name: Hiroyuki USUI
  role: author
  orcid: https://orcid.org/0000-0002-1156-0340
- name: Takumi ANDO
  role: author
- name: Ryuto TANAKA
  role: author
- name: Kazuma GOTOH
  role: author
  orcid: https://orcid.org/0000-0002-8197-5701
- name: Takeo HOSHI
  role: author
  orcid: https://orcid.org/0000-0002-2487-5245
- name: Kei NISHIKAWA
  role: author
  orcid: https://orcid.org/0000-0002-7718-7606
- name: Hiroki SAKAGUCHI
  role: author
  orcid: https://orcid.org/0000-0002-4125-7182

## Contact agent



## Publisher

organization: The Electrochemical Society of Japan

## Managing organization



## Keyword

- subject: Reaction Mechanism
  schema: not_defined
- subject: Lithiation Site
  schema: not_defined
- subject: Ionic Liquid Electrolyte
  schema: not_defined
- subject: Knight Shift
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Electrochemistry
  issn: '13443542'
  volume: '93'
  issue: '3'
  article_number: 25-00015

## Conference



## Related item



## Funding

- identifier: JP24K08565
  funder_name: Japan Society for the Promotion of Science
- identifier: JP20H00399
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23K04535
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23K18465
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23K26758
  funder_name: Japan Society for the Promotion of Science

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## Specimen



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## Computational method



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## Fileset

- id: cfe68821-321b-4116-b4be-0a35463e0e23
  filename: 93_25-00015.pdf
  content_type: application/pdf
  size: 3984327
  md5: 5989d3bb95cf1442ccb304412f21e37f

## Thumbnail

fileset_id: cfe68821-321b-4116-b4be-0a35463e0e23
filename: 93_25-00015.pdf