Magnesium insertion into Mg0.5+y(FeyTi1-y)2 (PO4)3

Koji Makino; Yasushi Katayama; Takashi Miura; Tomiya Kishi

doi:10.1016/S0378-7753(01)00694-2

Magnesium insertion into Mg_0.5+y(Fe_yTi_1-y)₂ (PO₄)₃

Koji Makino, Yasushi Katayama, Takashi Miura, Tomiya Kishi

Department of Applied Chemistry

Research output: Contribution to journal › Conference article › peer-review

21 Citations (Scopus)

Abstract

A series of transition metal phosphates, Mg_0.5+y(Fe_yTi_1-y)₂ (PO₄)₃ (MFTP), modified from Mg_0.5Ti₂(PO₄)₃ (MTP) were prepared by sol-gel method and evaluated as cathode materials for rechargeable magnesium cells. The crystal structure of MFTP at 0 ≤ y ≤ 0.5 was identical to that of MTP, while their unit cell volumes were smaller than that of MTP due to introduced Mg²⁺ ions. Electrochemical magnesium insertion into MFTP was found possible as observed for MTP. However, the limiting extent of magnesium insertion into MFTP at 0.1 ≤ y ≤ 0.5 was small compared with MTP and remarkably dependent on the current density during discharge, suggesting that the insertion limit is determined not by the number of available sites for Mg²⁺ or electrons but by the mobility of Mg²⁺ in the host varying with the unit cell volume.

Original language	English
Pages (from-to)	512-514
Number of pages	3
Journal	Journal of Power Sources
Volume	97-98
DOIs	https://doi.org/10.1016/S0378-7753(01)00694-2
Publication status	Published - 2001 Jul 1
Event	10th International Meeting on Lithium Batteries - Como, Italy Duration: 2001 May 28 → 2001 Jun 2

Keywords

Diffusion control
Magnesium insertion
NASICON-structure
Sol-gel method

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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@article{b1bf819f10a84176961f0ae5a8e43f48,

title = "Magnesium insertion into Mg0.5+y(FeyTi1-y)2 (PO4)3",

abstract = "A series of transition metal phosphates, Mg0.5+y(FeyTi1-y)2 (PO4)3 (MFTP), modified from Mg0.5Ti2(PO4)3 (MTP) were prepared by sol-gel method and evaluated as cathode materials for rechargeable magnesium cells. The crystal structure of MFTP at 0 ≤ y ≤ 0.5 was identical to that of MTP, while their unit cell volumes were smaller than that of MTP due to introduced Mg2+ ions. Electrochemical magnesium insertion into MFTP was found possible as observed for MTP. However, the limiting extent of magnesium insertion into MFTP at 0.1 ≤ y ≤ 0.5 was small compared with MTP and remarkably dependent on the current density during discharge, suggesting that the insertion limit is determined not by the number of available sites for Mg2+ or electrons but by the mobility of Mg2+ in the host varying with the unit cell volume.",

keywords = "Diffusion control, Magnesium insertion, NASICON-structure, Sol-gel method",

author = "Koji Makino and Yasushi Katayama and Takashi Miura and Tomiya Kishi",

year = "2001",

month = jul,

day = "1",

doi = "10.1016/S0378-7753(01)00694-2",

language = "English",

volume = "97-98",

pages = "512--514",

journal = "Journal of Power Sources",

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publisher = "Elsevier",

note = "10th International Meeting on Lithium Batteries ; Conference date: 28-05-2001 Through 02-06-2001",

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TY - JOUR

T1 - Magnesium insertion into Mg0.5+y(FeyTi1-y)2 (PO4)3

AU - Makino, Koji

AU - Katayama, Yasushi

AU - Miura, Takashi

AU - Kishi, Tomiya

PY - 2001/7/1

Y1 - 2001/7/1

N2 - A series of transition metal phosphates, Mg0.5+y(FeyTi1-y)2 (PO4)3 (MFTP), modified from Mg0.5Ti2(PO4)3 (MTP) were prepared by sol-gel method and evaluated as cathode materials for rechargeable magnesium cells. The crystal structure of MFTP at 0 ≤ y ≤ 0.5 was identical to that of MTP, while their unit cell volumes were smaller than that of MTP due to introduced Mg2+ ions. Electrochemical magnesium insertion into MFTP was found possible as observed for MTP. However, the limiting extent of magnesium insertion into MFTP at 0.1 ≤ y ≤ 0.5 was small compared with MTP and remarkably dependent on the current density during discharge, suggesting that the insertion limit is determined not by the number of available sites for Mg2+ or electrons but by the mobility of Mg2+ in the host varying with the unit cell volume.

AB - A series of transition metal phosphates, Mg0.5+y(FeyTi1-y)2 (PO4)3 (MFTP), modified from Mg0.5Ti2(PO4)3 (MTP) were prepared by sol-gel method and evaluated as cathode materials for rechargeable magnesium cells. The crystal structure of MFTP at 0 ≤ y ≤ 0.5 was identical to that of MTP, while their unit cell volumes were smaller than that of MTP due to introduced Mg2+ ions. Electrochemical magnesium insertion into MFTP was found possible as observed for MTP. However, the limiting extent of magnesium insertion into MFTP at 0.1 ≤ y ≤ 0.5 was small compared with MTP and remarkably dependent on the current density during discharge, suggesting that the insertion limit is determined not by the number of available sites for Mg2+ or electrons but by the mobility of Mg2+ in the host varying with the unit cell volume.

KW - Diffusion control

KW - Magnesium insertion

KW - NASICON-structure

KW - Sol-gel method

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U2 - 10.1016/S0378-7753(01)00694-2

DO - 10.1016/S0378-7753(01)00694-2

M3 - Conference article

AN - SCOPUS:0035396850

VL - 97-98

SP - 512

EP - 514

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

T2 - 10th International Meeting on Lithium Batteries

Y2 - 28 May 2001 through 2 June 2001

ER -