Improved cycleability of LiMn2O4-based thin films by Sn substitution

Dong Wook Shin; Ji Won Choi; Won Kook Choi; Yong Soo Cho; Seok Jin Yoon

doi:10.1063/1.2937854

Improved cycleability of LiMn₂O₄-based thin films by Sn substitution

Dong Wook Shin, Ji Won Choi, Won Kook Choi, Yong Soo Cho, Seok Jin Yoon

Department of Materials Science and Engineering

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

6 Citations (Scopus)

Abstract

The spinel thin films of LiSn_x/2Mn_2-xO₄ prepared by pulsed laser deposition were studied in regards with electrochemical reversibility and discharge capacity. LiSn_0.0125Mn _1.975O₄ thin films possessed a large capacity of ∼120 mA h g^-1 and a high capacity retention of >81% relative to their initial capacity at 4 C after the 90th cycle. Such promising results are believed to originate from the Mn⁴⁺ -richer spinel structure and the less distortion of MnO₆ octahedra. The near-edge x-ray-absorption fine structure result of the cycled LiSn_0.0125Mn _1.975O₄ films can be highlighted with the specific local t_2g symmetry resulting from the interaction between Mn 3d and O 2p.

Original language	English
Article number	064101
Journal	Applied Physics Letters
Volume	93
Issue number	6
DOIs	https://doi.org/10.1063/1.2937854
Publication status	Published - 2008

Bibliographical note

Funding Information:
The authors acknowledge the financial support from Korea Institute of Science and Technology, the project of “Development on Functional Thin Film Materials for Driving USN Sensors” and the Pohang Light Source (PLS) for the XAS measurements.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2937854

Cite this

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title = "Improved cycleability of LiMn2O4-based thin films by Sn substitution",

abstract = "The spinel thin films of LiSnx/2Mn2-xO4 prepared by pulsed laser deposition were studied in regards with electrochemical reversibility and discharge capacity. LiSn0.0125Mn 1.975O4 thin films possessed a large capacity of ∼120 mA h g-1 and a high capacity retention of >81% relative to their initial capacity at 4 C after the 90th cycle. Such promising results are believed to originate from the Mn4+ -richer spinel structure and the less distortion of MnO6 octahedra. The near-edge x-ray-absorption fine structure result of the cycled LiSn0.0125Mn 1.975O4 films can be highlighted with the specific local t2g symmetry resulting from the interaction between Mn 3d and O 2p.",

author = "Shin, {Dong Wook} and Choi, {Ji Won} and Choi, {Won Kook} and Cho, {Yong Soo} and Yoon, {Seok Jin}",

note = "Funding Information: The authors acknowledge the financial support from Korea Institute of Science and Technology, the project of “Development on Functional Thin Film Materials for Driving USN Sensors” and the Pohang Light Source (PLS) for the XAS measurements. ",

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T1 - Improved cycleability of LiMn2O4-based thin films by Sn substitution

AU - Shin, Dong Wook

AU - Choi, Ji Won

AU - Choi, Won Kook

AU - Cho, Yong Soo

AU - Yoon, Seok Jin

N1 - Funding Information: The authors acknowledge the financial support from Korea Institute of Science and Technology, the project of “Development on Functional Thin Film Materials for Driving USN Sensors” and the Pohang Light Source (PLS) for the XAS measurements.

PY - 2008

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N2 - The spinel thin films of LiSnx/2Mn2-xO4 prepared by pulsed laser deposition were studied in regards with electrochemical reversibility and discharge capacity. LiSn0.0125Mn 1.975O4 thin films possessed a large capacity of ∼120 mA h g-1 and a high capacity retention of >81% relative to their initial capacity at 4 C after the 90th cycle. Such promising results are believed to originate from the Mn4+ -richer spinel structure and the less distortion of MnO6 octahedra. The near-edge x-ray-absorption fine structure result of the cycled LiSn0.0125Mn 1.975O4 films can be highlighted with the specific local t2g symmetry resulting from the interaction between Mn 3d and O 2p.

AB - The spinel thin films of LiSnx/2Mn2-xO4 prepared by pulsed laser deposition were studied in regards with electrochemical reversibility and discharge capacity. LiSn0.0125Mn 1.975O4 thin films possessed a large capacity of ∼120 mA h g-1 and a high capacity retention of >81% relative to their initial capacity at 4 C after the 90th cycle. Such promising results are believed to originate from the Mn4+ -richer spinel structure and the less distortion of MnO6 octahedra. The near-edge x-ray-absorption fine structure result of the cycled LiSn0.0125Mn 1.975O4 films can be highlighted with the specific local t2g symmetry resulting from the interaction between Mn 3d and O 2p.

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