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 Lithium Phosphorus Oxynitride ("Lipon") Electrolyte
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The performance characteristics are determined by the type of cathode material, its area and thickness, by the type of anode (metallic lithium, lithium-ion, or lithium-free), and by the operating temperature. The choice of cathode material and the deposition and processing methods used to prepare the cathode film determine the operating voltage range, capacity, specific power, specific energy, cycle life and performance at elevated temperatures. Data for several types of batteries under investigation at ORNL are summarized on the pages linked below. Data for cells with crystalline LiMn2O4 and amorphous or crystalline V2O5 are available on request.
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Deposition and composition:
- RF magnetron sputtering of Li3PO4
- Typical composition: Li2.9PO3.3N0.36
Electrochemical and electrical properties: |
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More information: |
| Stability vs. Li: |
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0 to 5.5 V |
| Ionic Conductivity at 25°C |
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2 (± 1) x 10-6 S/cm |
| Transport number for Li+ ions |
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1 |
| Intrinsic diffusion coefficient at 25°C |
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10-11 cm2/s |
| Electronic conductivity at 25°C |
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< 10-14 S/cm |
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Optical Properties: |
| Index of Refraction |
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1.7 at 3 eV (~410 nm) |
| Optical band gap |
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3.75 eV |
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Reference:
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| X. Yu, J. B. Bates, G. E. Jellison Jr., and F. X. Hart, "A Stable Thin-Film Electrolyte: Lithium Phosphorus Oxynitride", J. Electrochem. Soc. 144, 524 (1997). |
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