Phase-Controlled Electrochemical Activity of Epitaxial Mg-Spinel Thin Films

Zhenxing Feng; Xiao Chen; Liang Qiao; Albert L. Lipson; Timothy T. Fister; Li Zeng; Chunjoong Kim; Tanghong Yi; Niya Sa; Danielle L. Proffit; Anthony K. Burrell; Jordi Cabana; Brian J. Ingram; Michael D. Biegalski; Michael J. Bedzyk; Paul Fenter

doi:10.1021/acsami.5b09346

Phase-Controlled Electrochemical Activity of Epitaxial Mg-Spinel Thin Films

Zhenxing Feng^*, Xiao Chen, Liang Qiao, Albert L. Lipson, Timothy T. Fister, Li Zeng, Chunjoong Kim, Tanghong Yi, Niya Sa, Danielle L. Proffit, Anthony K. Burrell, Jordi Cabana, Brian J. Ingram, Michael D. Biegalski, Michael J. Bedzyk, Paul Fenter

^*Corresponding author for this work

Materials Science and Engineering

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

56 Scopus citations

Abstract

We report an approach to control the reversible electrochemical activity (i.e., extraction/insertion) of Mg²⁺ in a cathode host through the use of phase-pure epitaxiallystabilized thin filmstructures. The epitaxiallystabilized MgMn₂O₄ (MMO) thin films in the distinct tetragonal and cubic phases are shown to exhibit dramatically different properties (in a nonaqueous electrolyte, Mg(TFSI)₂ in propylene carbonate): tetragonal MMO shows negligible activity while the cubic MMO (normally found as polymorph at high temperature or high pressure) exhibits reversible Mg²⁺ activity with associated changes in filmstructure and Mn oxidationstate. These results demonstrate a novelstrategy for identifying the factors that control multivalent cation mobility in next-generation battery materials.

Original language	English (US)
Pages (from-to)	28438-28443
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	7
Issue number	51
DOIs	https://doi.org/10.1021/acsami.5b09346
State	Published - Dec 30 2015

Keywords

Mg-spinel
epitaxial phasestabilization
multivalent insertion
phase-selective electrochemical activity
pulsed laser deposition

ASJC Scopus subject areas

Materials Science(all)

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10.1021/acsami.5b09346

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Feng, Z., Chen, X., Qiao, L., Lipson, A. L., Fister, T. T., Zeng, L., Kim, C., Yi, T., Sa, N., Proffit, D. L., Burrell, A. K., Cabana, J., Ingram, B. J., Biegalski, M. D., Bedzyk, M. J., & Fenter, P. (2015). Phase-Controlled Electrochemical Activity of Epitaxial Mg-Spinel Thin Films. ACS Applied Materials and Interfaces, 7(51), 28438-28443. https://doi.org/10.1021/acsami.5b09346

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title = "Phase-Controlled Electrochemical Activity of Epitaxial Mg-Spinel Thin Films",

abstract = "We report an approach to control the reversible electrochemical activity (i.e., extraction/insertion) of Mg2+ in a cathode host through the use of phase-pure epitaxiallystabilized thin filmstructures. The epitaxiallystabilized MgMn2O4 (MMO) thin films in the distinct tetragonal and cubic phases are shown to exhibit dramatically different properties (in a nonaqueous electrolyte, Mg(TFSI)2 in propylene carbonate): tetragonal MMO shows negligible activity while the cubic MMO (normally found as polymorph at high temperature or high pressure) exhibits reversible Mg2+ activity with associated changes in filmstructure and Mn oxidationstate. These results demonstrate a novelstrategy for identifying the factors that control multivalent cation mobility in next-generation battery materials.",

keywords = "Mg-spinel, epitaxial phasestabilization, multivalent insertion, phase-selective electrochemical activity, pulsed laser deposition",

author = "Zhenxing Feng and Xiao Chen and Liang Qiao and Lipson, {Albert L.} and Fister, {Timothy T.} and Li Zeng and Chunjoong Kim and Tanghong Yi and Niya Sa and Proffit, {Danielle L.} and Burrell, {Anthony K.} and Jordi Cabana and Ingram, {Brian J.} and Biegalski, {Michael D.} and Bedzyk, {Michael J.} and Paul Fenter",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = dec,

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doi = "10.1021/acsami.5b09346",

language = "English (US)",

volume = "7",

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AU - Feng, Zhenxing

AU - Chen, Xiao

AU - Qiao, Liang

AU - Lipson, Albert L.

AU - Fister, Timothy T.

AU - Zeng, Li

AU - Kim, Chunjoong

AU - Yi, Tanghong

AU - Sa, Niya

AU - Proffit, Danielle L.

AU - Burrell, Anthony K.

AU - Cabana, Jordi

AU - Ingram, Brian J.

AU - Biegalski, Michael D.

AU - Bedzyk, Michael J.

AU - Fenter, Paul

PY - 2015/12/30

Y1 - 2015/12/30

N2 - We report an approach to control the reversible electrochemical activity (i.e., extraction/insertion) of Mg2+ in a cathode host through the use of phase-pure epitaxiallystabilized thin filmstructures. The epitaxiallystabilized MgMn2O4 (MMO) thin films in the distinct tetragonal and cubic phases are shown to exhibit dramatically different properties (in a nonaqueous electrolyte, Mg(TFSI)2 in propylene carbonate): tetragonal MMO shows negligible activity while the cubic MMO (normally found as polymorph at high temperature or high pressure) exhibits reversible Mg2+ activity with associated changes in filmstructure and Mn oxidationstate. These results demonstrate a novelstrategy for identifying the factors that control multivalent cation mobility in next-generation battery materials.

AB - We report an approach to control the reversible electrochemical activity (i.e., extraction/insertion) of Mg2+ in a cathode host through the use of phase-pure epitaxiallystabilized thin filmstructures. The epitaxiallystabilized MgMn2O4 (MMO) thin films in the distinct tetragonal and cubic phases are shown to exhibit dramatically different properties (in a nonaqueous electrolyte, Mg(TFSI)2 in propylene carbonate): tetragonal MMO shows negligible activity while the cubic MMO (normally found as polymorph at high temperature or high pressure) exhibits reversible Mg2+ activity with associated changes in filmstructure and Mn oxidationstate. These results demonstrate a novelstrategy for identifying the factors that control multivalent cation mobility in next-generation battery materials.

KW - Mg-spinel

KW - epitaxial phasestabilization

KW - multivalent insertion

KW - phase-selective electrochemical activity

KW - pulsed laser deposition

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Phase-Controlled Electrochemical Activity of Epitaxial Mg-Spinel Thin Films

Abstract

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