Amorphous xNaF-FeSO4 Systems (1 ≤ x ≤ 2) with Excellent Cathode Properties for Sodium-Ion Batteries

Ayuko Kitajou, Hiroyoshi Momida, Takahiro Yamashita, Tamio Oguchi, Shigeto Okada

Research output: Contribution to journalArticle

Abstract

NaFeSO4F is a promising cathode for Na-ion batteries because of its high operating voltage and the abundance of iron resources. We synthesized amorphous xNaF-FeSO4 (1 ≤ x ≤ 2) systems with a dry-ball milling method, and heating of the amorphous NaF-FeSO4 successfully gave crystalline NaFeSO4F. The crystalline NaFeSO4F had a reversible capacity of 66 mAh g-1, which is larger than the reported value. Amorphous 1.3NaF-FeSO4 exhibited the largest reversible capacity in the xNaF-FeSO4 (1 ≤ x ≤ 2) series. Although amorphous xNaF-FeSO4 showed a lower rate capability than that of obtained crystalline NaFeSO4F, its reversible capacities in all compositions were larger than that of crystalline NaFeSO4F.

Original languageEnglish
Pages (from-to)5968-5974
Number of pages7
JournalACS Applied Energy Materials
Volume2
Issue number8
DOIs
Publication statusPublished - Aug 26 2019

Fingerprint

Cathodes
Sodium
Ions
Crystalline materials
Ball milling
Iron
Heating
Electric potential
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Amorphous xNaF-FeSO4 Systems (1 ≤ x ≤ 2) with Excellent Cathode Properties for Sodium-Ion Batteries. / Kitajou, Ayuko; Momida, Hiroyoshi; Yamashita, Takahiro; Oguchi, Tamio; Okada, Shigeto.

In: ACS Applied Energy Materials, Vol. 2, No. 8, 26.08.2019, p. 5968-5974.

Research output: Contribution to journalArticle

Kitajou, Ayuko ; Momida, Hiroyoshi ; Yamashita, Takahiro ; Oguchi, Tamio ; Okada, Shigeto. / Amorphous xNaF-FeSO4 Systems (1 ≤ x ≤ 2) with Excellent Cathode Properties for Sodium-Ion Batteries. In: ACS Applied Energy Materials. 2019 ; Vol. 2, No. 8. pp. 5968-5974.
@article{deb10dcdc4744b0bbaa508bcf761f0d2,
title = "Amorphous xNaF-FeSO4 Systems (1 ≤ x ≤ 2) with Excellent Cathode Properties for Sodium-Ion Batteries",
abstract = "NaFeSO4F is a promising cathode for Na-ion batteries because of its high operating voltage and the abundance of iron resources. We synthesized amorphous xNaF-FeSO4 (1 ≤ x ≤ 2) systems with a dry-ball milling method, and heating of the amorphous NaF-FeSO4 successfully gave crystalline NaFeSO4F. The crystalline NaFeSO4F had a reversible capacity of 66 mAh g-1, which is larger than the reported value. Amorphous 1.3NaF-FeSO4 exhibited the largest reversible capacity in the xNaF-FeSO4 (1 ≤ x ≤ 2) series. Although amorphous xNaF-FeSO4 showed a lower rate capability than that of obtained crystalline NaFeSO4F, its reversible capacities in all compositions were larger than that of crystalline NaFeSO4F.",
author = "Ayuko Kitajou and Hiroyoshi Momida and Takahiro Yamashita and Tamio Oguchi and Shigeto Okada",
year = "2019",
month = "8",
day = "26",
doi = "10.1021/acsaem.9b01053",
language = "English",
volume = "2",
pages = "5968--5974",
journal = "ACS Applied Energy Materials",
issn = "2574-0962",
publisher = "American Chemical Society",
number = "8",

}

TY - JOUR

T1 - Amorphous xNaF-FeSO4 Systems (1 ≤ x ≤ 2) with Excellent Cathode Properties for Sodium-Ion Batteries

AU - Kitajou, Ayuko

AU - Momida, Hiroyoshi

AU - Yamashita, Takahiro

AU - Oguchi, Tamio

AU - Okada, Shigeto

PY - 2019/8/26

Y1 - 2019/8/26

N2 - NaFeSO4F is a promising cathode for Na-ion batteries because of its high operating voltage and the abundance of iron resources. We synthesized amorphous xNaF-FeSO4 (1 ≤ x ≤ 2) systems with a dry-ball milling method, and heating of the amorphous NaF-FeSO4 successfully gave crystalline NaFeSO4F. The crystalline NaFeSO4F had a reversible capacity of 66 mAh g-1, which is larger than the reported value. Amorphous 1.3NaF-FeSO4 exhibited the largest reversible capacity in the xNaF-FeSO4 (1 ≤ x ≤ 2) series. Although amorphous xNaF-FeSO4 showed a lower rate capability than that of obtained crystalline NaFeSO4F, its reversible capacities in all compositions were larger than that of crystalline NaFeSO4F.

AB - NaFeSO4F is a promising cathode for Na-ion batteries because of its high operating voltage and the abundance of iron resources. We synthesized amorphous xNaF-FeSO4 (1 ≤ x ≤ 2) systems with a dry-ball milling method, and heating of the amorphous NaF-FeSO4 successfully gave crystalline NaFeSO4F. The crystalline NaFeSO4F had a reversible capacity of 66 mAh g-1, which is larger than the reported value. Amorphous 1.3NaF-FeSO4 exhibited the largest reversible capacity in the xNaF-FeSO4 (1 ≤ x ≤ 2) series. Although amorphous xNaF-FeSO4 showed a lower rate capability than that of obtained crystalline NaFeSO4F, its reversible capacities in all compositions were larger than that of crystalline NaFeSO4F.

UR - http://www.scopus.com/inward/record.url?scp=85071729338&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85071729338&partnerID=8YFLogxK

U2 - 10.1021/acsaem.9b01053

DO - 10.1021/acsaem.9b01053

M3 - Article

AN - SCOPUS:85071729338

VL - 2

SP - 5968

EP - 5974

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

SN - 2574-0962

IS - 8

ER -