Journal Article10.1149/1.1837443
A Stable Thin‐Film Lithium Electrolyte: Lithium Phosphorus Oxynitride
TL;DR: In this paper, the electrochemical and optical properties of Li phosphorus oxynitride (Lipon) thin films have been studied with an emphasis on the stability window vs. lithium metal and the behavior of the Li/Li interface.
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Abstract: The electrochemical and optical properties of lithium phosphorus oxynitride (Lipon) thin films have been studied with an emphasis on the stability window vs. lithium metal and the behavior of the Li/Lipon interface. Impedance measurements made between {minus}26 and 140 C show that Lipon exhibits a single, Li{sup +}-ion conducting phase with an average conductivity of 2.3 ({+-}0.7) {times} 10{sup {minus}6} S/cm at 25 C and an average activation energy of E{sub a} = 0.55 {+-} 0.02 eV. No detectable reaction or degradation was evident at the Li/Lipon interface, and linear sweep voltammetry measurements on three-electrode cells indicated that Lipon is stable from 0 to about 5.5 V with respect to a Li{sup +}/Li reference. The complex refractive index of Lipon was measured by spectroscopic ellipsometry. Optical bandgaps of 3.45 and 3.75 eV were obtained from the ellipsometry data and from optical absorption measurements, respectively.
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Citations
Performance of Thin‐Film Lithium Energy Cells under Uniaxial Pressure
TL;DR: In this paper, the ability of all-solid-state thin-film lithium energy cells to withstand the uniaxial uniformly distributed surface pressure of about 550 kPa required for embedding in laminate carbon fiber reinforced plastics (CFRP) composites, and their maximum surface pressure operational limit were investigated.
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Patent
In situ formed ionically conductive membranes for protection of active metal anodes and battery cells
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TL;DR: Amorphous iron phosphate (FePO 4 ) and nitrided iron phosphate(FePON) thin films have been fabricated by radiofrequency sputtering in ambience of oxygen and nitrogen, respectively.
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Phase Composition, Density, and Ionic Conductivity of the Li7La3Zr2O12-Based Composites with LiPO3 Glass Addition
TL;DR: It was indicated that the impurities formation depends on the composition of the composite, and the highest total conductivity of the c-LLZ/LiPO3 composites has been achieved by introducing 1 wt % additive (0.11 mS cm-1 at room temperature), whereas further doping resulted in the impurity formation.
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Unraveling the Stable Cathode Electrolyte Interface in all Solid‐State Thin‐Film Battery Operating at 5 V
TL;DR: In this paper , a thin-film battery consisting of an LNMO cathode with a solid lithium phosphorus oxynitride (LiPON) electrolyte is tested and their interface before and after cycling is characterized.