Effect of hot pressing temperature on the electrochemical stability of Li2S-P2S5 (75 -- 25 % mole) as a solid electrolyte
Solid state batteries can contribute to a more sustainable energy future providing the energy required when needed. It can facilitate the integration of renewable energy into the electrical grid and can provide the energy density required to make electric vehicles a massive technology without greenhouse emissions in operating conditions. To concretize the latter, high-performance electrolytes are necessary. Li2S-P2S5 (75-25% mole) is a promising solid-electrolyte that could potentially be used for this purpose. Its most appealing features include: high ionic conductivity at room temperature (~10-3 S/cm), low-temperature processing conditions, and low cost. Most likely, Li2S-P2S5 (75-25% mole) would be integrated in a battery system using Li metal as an anode. Therefore, its stability against metallic lithium must be understood. The purpose of this work is to characterize the effect of Li2S-P2S5 (75-25% mole) processing conditions, most specifically hot pressing, and their effect on Li stability. It was found that improvements on electrochemical performance can be attained by promoting particle chemistry during hot pressing.
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- In Collections
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Electronic Theses & Dissertations
- Copyright Status
- In Copyright
- Material Type
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Theses
- Authors
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Garcia Mendez, Maria Regina
- Thesis Advisors
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Sakamoto, Jeff S.
- Committee Members
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Morelli, Donald T.
Boehlert, Carl J.
- Date Published
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2015
- Subjects
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Electrolytes--Thermal properties
Energy conversion
Energy storage
Lithium sulfur batteries
Solid state batteries
- Program of Study
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Materials Science and Engineering - Master of Science
- Degree Level
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Masters
- Language
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English
- Pages
- viii, 59 pages
- ISBN
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9781321555479
1321555474
- Permalink
- https://doi.org/doi:10.25335/gek5-9x80