3-Hexylthiophene as a stabilizing additive for high voltage cathodes in lithium-ion batteries

Ali Abouimrane; Susan A. Odom; Hadi Tavassol; Matthew V. Schulmerich; Huiming Wu; Rohit Bhargav; Andrew A. Gewirth; Jeffrey S. Moore; Khalil Amine

doi:10.1149/2.039302jes

3-Hexylthiophene as a stabilizing additive for high voltage cathodes in lithium-ion batteries

Ali Abouimrane, Susan A. Odom, Hadi Tavassol, Matthew V. Schulmerich, Huiming Wu, Rohit Bhargav, Andrew A. Gewirth, Jeffrey S. Moore, Khalil Amine

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

Abstract

3-Hexylthiophene was incorporated into battery electrolyte as a life-extending additive. Upon oxidation, this monomer forms a conductive, conjugated polymer, resulting in significant increase in the cycle lifetimes of lithium half-cells containing high capacity Li1.2Ni0.15Co0.1Mn0.55O₂ and high voltage LiNi0.5Mn1.5O4 cathodes. This additive significantly reduces the interfacial impedance growth observed in the cell without additive, which indicates an effective protection of the interface when using 3-hexythiophene. We also observed an improvement in safety when 3-hexylthiophene was incorporated. Electron microscopy images show the new polymer on the cathode surface, specifically poly(3-hexylthiophene) as supported by characterization of the cathode surface using vibrational spectroscopy (Raman and infrared) and mass spectrometry (MALDI).

Original language	English (US)
Pages (from-to)	A268-A271
Journal	Journal of the Electrochemical Society
Volume	160
Issue number	2
DOIs	https://doi.org/10.1149/2.039302jes
State	Published - Apr 2 2013

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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10.1149/2.039302jes

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title = "3-Hexylthiophene as a stabilizing additive for high voltage cathodes in lithium-ion batteries",

abstract = "3-Hexylthiophene was incorporated into battery electrolyte as a life-extending additive. Upon oxidation, this monomer forms a conductive, conjugated polymer, resulting in significant increase in the cycle lifetimes of lithium half-cells containing high capacity Li1.2Ni0.15Co0.1Mn0.55O2 and high voltage LiNi0.5Mn1.5O4 cathodes. This additive significantly reduces the interfacial impedance growth observed in the cell without additive, which indicates an effective protection of the interface when using 3-hexythiophene. We also observed an improvement in safety when 3-hexylthiophene was incorporated. Electron microscopy images show the new polymer on the cathode surface, specifically poly(3-hexylthiophene) as supported by characterization of the cathode surface using vibrational spectroscopy (Raman and infrared) and mass spectrometry (MALDI).",

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T1 - 3-Hexylthiophene as a stabilizing additive for high voltage cathodes in lithium-ion batteries

AU - Abouimrane, Ali

AU - Odom, Susan A.

AU - Tavassol, Hadi

AU - Schulmerich, Matthew V.

AU - Wu, Huiming

AU - Bhargav, Rohit

AU - Gewirth, Andrew A.

AU - Moore, Jeffrey S.

AU - Amine, Khalil

PY - 2013/4/2

Y1 - 2013/4/2

N2 - 3-Hexylthiophene was incorporated into battery electrolyte as a life-extending additive. Upon oxidation, this monomer forms a conductive, conjugated polymer, resulting in significant increase in the cycle lifetimes of lithium half-cells containing high capacity Li1.2Ni0.15Co0.1Mn0.55O2 and high voltage LiNi0.5Mn1.5O4 cathodes. This additive significantly reduces the interfacial impedance growth observed in the cell without additive, which indicates an effective protection of the interface when using 3-hexythiophene. We also observed an improvement in safety when 3-hexylthiophene was incorporated. Electron microscopy images show the new polymer on the cathode surface, specifically poly(3-hexylthiophene) as supported by characterization of the cathode surface using vibrational spectroscopy (Raman and infrared) and mass spectrometry (MALDI).

AB - 3-Hexylthiophene was incorporated into battery electrolyte as a life-extending additive. Upon oxidation, this monomer forms a conductive, conjugated polymer, resulting in significant increase in the cycle lifetimes of lithium half-cells containing high capacity Li1.2Ni0.15Co0.1Mn0.55O2 and high voltage LiNi0.5Mn1.5O4 cathodes. This additive significantly reduces the interfacial impedance growth observed in the cell without additive, which indicates an effective protection of the interface when using 3-hexythiophene. We also observed an improvement in safety when 3-hexylthiophene was incorporated. Electron microscopy images show the new polymer on the cathode surface, specifically poly(3-hexylthiophene) as supported by characterization of the cathode surface using vibrational spectroscopy (Raman and infrared) and mass spectrometry (MALDI).

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3-Hexylthiophene as a stabilizing additive for high voltage cathodes in lithium-ion batteries

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