# Facile Synthesis of FeSe                    <sub>2</sub>                    /rGO with High Reaction Kinetics for Simultaneously Ultrafast and Durable Sodium Storage

https://mdr.nims.go.jp/datasets/a8e3694b-f07c-4d9e-a954-9a2313793570

## File

- [manuscript.docx](https://mdr.nims.go.jp/filesets/d764ab63-437f-48ed-9541-9b9c6fb6da1b/download) ([Detail](https://mdr.nims.go.jp/filesets/d764ab63-437f-48ed-9541-9b9c6fb6da1b.md))
- [support.docx](https://mdr.nims.go.jp/filesets/31d8a38f-8530-4466-b02d-e990a706c127/download) ([Detail](https://mdr.nims.go.jp/filesets/31d8a38f-8530-4466-b02d-e990a706c127.md))

## Id

a8e3694b-f07c-4d9e-a954-9a2313793570

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-10-23T09:34:42.900285Z

## Updated at

2026-10-26T00:27:29.499021Z

## Published at

2026-10-26T01:30:43.300444Z

## Doi

https://doi.org/10.48505/nims.8678

## First published url

https://doi.org/10.1021/acsaem.6c00145

## Date published

2026-04-08

## Recorded date published



## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: Facile Synthesis of FeSe                    <sub>2</sub>                    /rGO
    with High Reaction Kinetics for Simultaneously Ultrafast and Durable Sodium Storage
  title_type: original
  lang: en

## Description

- description: Iron selenides are promising anode materials for high performance sodium
    storage due to their high theoretical capacities, cost-effectiveness, and natural
    abundance. Nevertheless, their practical applications are severely constrained
    by intrinsically low electronic conductivity, sluggish Na+ diffusion kinetics,
    and structural instability during repeated cycling. In this work, sandwiched structure
    FeSe2/rGO nanocomposite is prepared with a facile microwave-assisted hydrothermal
    method within only 5 min. The rationally designed layered structure not only suppresses
    nanoparticle agglomeration but also enlarges the specific surface area, thereby
    maximizing the accessibility of electrochemical active sites throughout the charge/
    discharge process. Benefiting from this architecture, FeSe2/rGO exhibits accelerated
    reaction kinetics in ether-based electrolyte, characterized by reduced activation
    energy, enhanced Na+ diffusion coefficients, and improved charge transfer dynamics.
    When employed as an anode for sodium ion batteries (SIBs), FeSe2/rGO demonstrates
    outstanding electrochemical performance. The underlying Na-storage mechanism was
    further elucidated through comprehensive ex-situ characterizations. Moreover,
    by coupling FeSe2/rGO with active carbon (AC) as the cathode to construct sodium-ion
    capacitors (SICs), the assembled device delivers an impressive energy density
    of 124.2 Wh kg−1 and a high power density of 9975 W kg−1, along with excellent
    long-term durability (70.7% capacity retention after 8000 cycles). These results
    highlight the potential of the FeSe2/rGO-based architecture for nextgeneration
    high-performance electrochemical energy storage systems and offer valuable insights
    into the design of advanced electrode materials.
  description_type: abstract
  lang: und

## Creator

- name: Guangxu Xu
  role: author
  orcid: https://orcid.org/0009-0004-4725-2448
- name: Wenfeng Cui
  role: author
  orcid: https://orcid.org/0009-0003-8633-5660
- name: Hang Yin
  role: author
  orcid: https://orcid.org/0000-0002-9042-6990
- name: Naoki Fukata
  role: author
  orcid: https://orcid.org/0000-0002-0986-8485
- name: Jie Tang
  role: author
  orcid: https://orcid.org/0000-0002-5871-5776

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: FeSe2/rGO
  schema: not_defined
- subject: microwave-assisted synthesis
  schema: not_defined
- subject: anode materials
  schema: not_defined
- subject: sodium ion batteries
  schema: not_defined
- subject: sodium ion capacitors
  schema: not_defined

## Rights

- description: This document is the unedited Author’s version of a Submitted Manuscript
    subsequently accepted for publication in ACS Applied Energy Materials, copyright
    © 2026. To access the final published article, see https://doi.org/10.1021/acsaem.6c00145.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: ACS Applied Energy Materials
  issn: '25740962'
  volume: '9'
  issue: '8'
  article_number: acsaem.6c00145

## Conference



## Related item



## Funding

- funder_name: Ministry of Education, Culture, Sports, Science and Technology

## 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: d764ab63-437f-48ed-9541-9b9c6fb6da1b
  filename: manuscript.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 38365516
  md5: '00857904c84ff75903508269abb942b0'
- id: 31d8a38f-8530-4466-b02d-e990a706c127
  filename: support.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 12356542
  md5: 4e7c6a6ee0576ae9aee7621aef047ff5

## Thumbnail

fileset_id: 31d8a38f-8530-4466-b02d-e990a706c127
filename: support.docx