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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/S0378-7753(01)00694-2

Cite this

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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",

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

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pages = "512--514",

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

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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

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