TY - JOUR
T1 - Bi-functional Li2B12H12 for energy storage and conversion applications
T2 - Solid-state electrolyte and luminescent down-conversion dye
AU - Teprovich, Joseph A.
AU - Colón-Mercado, Héctor
AU - Washington, Aaron L.
AU - Ward, Patrick A.
AU - Greenway, Scott
AU - Missimer, David M.
AU - Hartman, Hope
AU - Velten, Josef
AU - Christian, Jonathan H.
AU - Zidan, Ragaiy
N1 - Publisher Copyright:
© 2015 The Royal Society of Chemistry.
PY - 2015
Y1 - 2015
N2 - Our investigation of the chemical and physical properties of the alkali-metal dodecahydro-closo-dodecaborate, Li2B12H12, determined that it is a bi-functional material that can be used as a solid state electrolyte in lithium ion batteries and as a luminescent down conversion dye in scalable transparent displays. A series of electrochemical measurements of morphologically altered samples, via mechanical milling, was conducted. The measurements indicated that mechanical alternations of the Li2B12H12 morphology makes it an excellent lithium ion conductor in the solid state with exceptional ionic conductivity at room temperature (0.31 mS cm-1) and is compatible with a metallic lithium electrode up to 6.0 V. In addition, all solid state half and full electrochemical cells were assembled and successfully cycled using Li2B12H12 as a solid state electrolyte at temperatures as low as 30 °C with good capacity retention. The photophysical properties of Li2B12H12 were also investigated. Li2B12H12 has an emission maximum of ∼460 nm in a variety of solvents with Stokes' shifts up to 175 nm observed. Li2B12H12 was incorporated in a polyvinyl alcohol (PVA) thin film to demonstrate its application as a luminescent down-conversion dye in a transparent head-up display when excited by a UV projection source.
AB - Our investigation of the chemical and physical properties of the alkali-metal dodecahydro-closo-dodecaborate, Li2B12H12, determined that it is a bi-functional material that can be used as a solid state electrolyte in lithium ion batteries and as a luminescent down conversion dye in scalable transparent displays. A series of electrochemical measurements of morphologically altered samples, via mechanical milling, was conducted. The measurements indicated that mechanical alternations of the Li2B12H12 morphology makes it an excellent lithium ion conductor in the solid state with exceptional ionic conductivity at room temperature (0.31 mS cm-1) and is compatible with a metallic lithium electrode up to 6.0 V. In addition, all solid state half and full electrochemical cells were assembled and successfully cycled using Li2B12H12 as a solid state electrolyte at temperatures as low as 30 °C with good capacity retention. The photophysical properties of Li2B12H12 were also investigated. Li2B12H12 has an emission maximum of ∼460 nm in a variety of solvents with Stokes' shifts up to 175 nm observed. Li2B12H12 was incorporated in a polyvinyl alcohol (PVA) thin film to demonstrate its application as a luminescent down-conversion dye in a transparent head-up display when excited by a UV projection source.
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U2 - 10.1039/c5ta06549f
DO - 10.1039/c5ta06549f
M3 - Article
AN - SCOPUS:84946943937
SN - 2050-7488
VL - 3
SP - 22853
EP - 22859
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 45
ER -