Cathode properties of Mn-doped inverse spinels for Li-ion battery

Ayuko Kitajou; Jun Yoshida; Shinji Nakanishi; Shigeto Okada; Jun I. Yamaki

doi:10.1016/j.jpowsour.2012.12.073

Cathode properties of Mn-doped inverse spinels for Li-ion battery

Ayuko Kitajou, Jun Yoshida, Shinji Nakanishi, Shigeto Okada, Jun I. Yamaki

Department of Advanced Device Materials

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Mn-doped LiNiVO₄ and LiCoVO₄ were obtained by aqueous method under ambient pressure in the whole 0 ≤ x ≤ 0.4 (LiMnxNi _1-xVO₄) and 0 ≤ y ≤ 0.3 (LiMn_yCo _1-yVO₄) region. The lattice constants and reversible capacities of the Mn-doped inverse spinel increased by increasing the Mn doping level. In particular, the reversible capacity of the obtained LiMn _0.3Co_0.7VO₄ is around about 100 mAh g ^-1, which is the largest reported capacity of inverse spinel cathode materials. It suggests that the bottleneck for lithium diffusion in the inverse spinel structure was enlarged by relatively larger Mn substitutional doping to Co or Ni. The ex-situ XRD measurement for charged or discharged inverse spinel pellets revealed a reversible expansion and contraction on cycle due to the structural strength and flexibility.

Original language	English
Pages (from-to)	658-662
Number of pages	5
Journal	Journal of Power Sources
Volume	244
DOIs	https://doi.org/10.1016/j.jpowsour.2012.12.073
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

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)

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10.1016/j.jpowsour.2012.12.073

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title = "Cathode properties of Mn-doped inverse spinels for Li-ion battery",

abstract = "Mn-doped LiNiVO4 and LiCoVO4 were obtained by aqueous method under ambient pressure in the whole 0 ≤ x ≤ 0.4 (LiMnxNi 1-xVO4) and 0 ≤ y ≤ 0.3 (LiMnyCo 1-yVO4) region. The lattice constants and reversible capacities of the Mn-doped inverse spinel increased by increasing the Mn doping level. In particular, the reversible capacity of the obtained LiMn 0.3Co0.7VO4 is around about 100 mAh g -1, which is the largest reported capacity of inverse spinel cathode materials. It suggests that the bottleneck for lithium diffusion in the inverse spinel structure was enlarged by relatively larger Mn substitutional doping to Co or Ni. The ex-situ XRD measurement for charged or discharged inverse spinel pellets revealed a reversible expansion and contraction on cycle due to the structural strength and flexibility.",

author = "Ayuko Kitajou and Jun Yoshida and Shinji Nakanishi and Shigeto Okada and Yamaki, {Jun I.}",

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doi = "10.1016/j.jpowsour.2012.12.073",

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volume = "244",

pages = "658--662",

journal = "Journal of Power Sources",

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publisher = "Elsevier",

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T1 - Cathode properties of Mn-doped inverse spinels for Li-ion battery

AU - Kitajou, Ayuko

AU - Yoshida, Jun

AU - Nakanishi, Shinji

AU - Okada, Shigeto

AU - Yamaki, Jun I.

PY - 2013

Y1 - 2013

N2 - Mn-doped LiNiVO4 and LiCoVO4 were obtained by aqueous method under ambient pressure in the whole 0 ≤ x ≤ 0.4 (LiMnxNi 1-xVO4) and 0 ≤ y ≤ 0.3 (LiMnyCo 1-yVO4) region. The lattice constants and reversible capacities of the Mn-doped inverse spinel increased by increasing the Mn doping level. In particular, the reversible capacity of the obtained LiMn 0.3Co0.7VO4 is around about 100 mAh g -1, which is the largest reported capacity of inverse spinel cathode materials. It suggests that the bottleneck for lithium diffusion in the inverse spinel structure was enlarged by relatively larger Mn substitutional doping to Co or Ni. The ex-situ XRD measurement for charged or discharged inverse spinel pellets revealed a reversible expansion and contraction on cycle due to the structural strength and flexibility.

AB - Mn-doped LiNiVO4 and LiCoVO4 were obtained by aqueous method under ambient pressure in the whole 0 ≤ x ≤ 0.4 (LiMnxNi 1-xVO4) and 0 ≤ y ≤ 0.3 (LiMnyCo 1-yVO4) region. The lattice constants and reversible capacities of the Mn-doped inverse spinel increased by increasing the Mn doping level. In particular, the reversible capacity of the obtained LiMn 0.3Co0.7VO4 is around about 100 mAh g -1, which is the largest reported capacity of inverse spinel cathode materials. It suggests that the bottleneck for lithium diffusion in the inverse spinel structure was enlarged by relatively larger Mn substitutional doping to Co or Ni. The ex-situ XRD measurement for charged or discharged inverse spinel pellets revealed a reversible expansion and contraction on cycle due to the structural strength and flexibility.

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JO - Journal of Power Sources

JF - Journal of Power Sources

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Cathode properties of Mn-doped inverse spinels for Li-ion battery

Abstract

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