Structural and electrochemical properties of Fe- and Al-doped Li3V2(PO4)3 for all-solid-state symmetric lithium ion batteries prepared by spray-drying-assisted carbothermal method

Yongho Kee, Nikolay Dimov, Eiji Kobayashi, Ayuko Kitajou, Shigeto Okada

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Li3V2(PO4)3 and Li3V1.9M0.1(PO4)3 (M = Fe, Al) samples were synthesized via spray-drying-assisted carbothermal solid-state reaction, and their structural and electrochemical properties were investigated by XRD, SEM, and galvanostatic charge/discharge. Li3V2(PO4)3, Li3V1.9Fe0.1(PO4)3, and Li3V1.9Al0.1(PO4)3 showed initial discharge capacities of 103.3 mAh g- 1, 107.6 mAh g- 1, and 105.6 mAh g- 1, respectively, in the all-solid-state symmetric batteries with Li1.5Al0.5Ge1.5(PO4)3 solid-state electrolytes at a rate of 7.5 mA g- 1. The enhanced discharge capacities of Fe and Al-doped Li3V2(PO4)3 could be attributed to the increased electrical conductivity induced by the introduction of Fe3 + or Al3 + trivalent ions into the V3 + sites and to the structural stabilization of the monoclinic Li3V2(PO4)3 by the spray-drying process.

Original languageEnglish
Pages (from-to)138-143
Number of pages6
JournalSolid State Ionics
Volume272
DOIs
Publication statusPublished - 2015

Fingerprint

Spray drying
Electrochemical properties
drying
sprayers
electric batteries
Structural properties
lithium
solid state
Solid state reactions
Electrolytes
trivalent ions
ions
Stabilization
Ions
Scanning electron microscopy
stabilization
electrolytes
electrical resistivity
scanning electron microscopy
Lithium-ion batteries

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Chemistry(all)

Cite this

Structural and electrochemical properties of Fe- and Al-doped Li3V2(PO4)3 for all-solid-state symmetric lithium ion batteries prepared by spray-drying-assisted carbothermal method. / Kee, Yongho; Dimov, Nikolay; Kobayashi, Eiji; Kitajou, Ayuko; Okada, Shigeto.

In: Solid State Ionics, Vol. 272, 2015, p. 138-143.

Research output: Contribution to journalArticle

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T1 - Structural and electrochemical properties of Fe- and Al-doped Li3V2(PO4)3 for all-solid-state symmetric lithium ion batteries prepared by spray-drying-assisted carbothermal method

AU - Kee, Yongho

AU - Dimov, Nikolay

AU - Kobayashi, Eiji

AU - Kitajou, Ayuko

AU - Okada, Shigeto

PY - 2015

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AB - Li3V2(PO4)3 and Li3V1.9M0.1(PO4)3 (M = Fe, Al) samples were synthesized via spray-drying-assisted carbothermal solid-state reaction, and their structural and electrochemical properties were investigated by XRD, SEM, and galvanostatic charge/discharge. Li3V2(PO4)3, Li3V1.9Fe0.1(PO4)3, and Li3V1.9Al0.1(PO4)3 showed initial discharge capacities of 103.3 mAh g- 1, 107.6 mAh g- 1, and 105.6 mAh g- 1, respectively, in the all-solid-state symmetric batteries with Li1.5Al0.5Ge1.5(PO4)3 solid-state electrolytes at a rate of 7.5 mA g- 1. The enhanced discharge capacities of Fe and Al-doped Li3V2(PO4)3 could be attributed to the increased electrical conductivity induced by the introduction of Fe3 + or Al3 + trivalent ions into the V3 + sites and to the structural stabilization of the monoclinic Li3V2(PO4)3 by the spray-drying process.

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