Quality Control of Slot-Die Coated Aluminum Oxide Layers for Battery Applications Using Hyperspectral Imaging
Abstract
:1. Introduction
2. Methods
2.1. Slot-Die Coating
2.2. Measurement Setup and Data Pre-Treatment
2.3. Spectroscopic Ellipsometry
2.4. Data Analysis Methods
Principal Component Analysis (PCA)
3. Results
3.1. Hyperspectral Imaging of Thin Films
3.2. HSI of Al2O3 Coated Stainless-Steel Foils
3.2.1. Multivariate Data Analysis
3.2.2. Quality Control Parameter
4. Conclusions and Outlook
Supplementary Materials
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Exit Slit Position (Left to Right) | 2 cm | 8 cm | 15 cm | 22 cm | 28 cm |
---|---|---|---|---|---|
Power Supply Level | Intensity Levels | ||||
3 V | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
8 V | 7.4 | 7.4 | 7.2 | 7.2 | 7.5 |
12 V | 29.1 | 28.1 | 28.0 | 28.0 | 29.0 |
Parameter | Thickness (nm) | An | Bn | Cn | Ak | Bk | Ck |
---|---|---|---|---|---|---|---|
-- | 52.4–66.2 | 1.5827 | 0.0191 | −0.0013 | 0.1359 | 0.3828 | 400 |
Model | No. of Latent Variables | R2C | RMSEC | R2CV | RMSECV |
---|---|---|---|---|---|
PLS | 4 | 0.996 | 1.5 | 0.979 | 3.6 |
PCR | 4 | 0.992 | 2.0 | 0.978 | 3.7 |
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Gruber, F.; Wollmann, P.; Schumm, B.; Grählert, W.; Kaskel, S. Quality Control of Slot-Die Coated Aluminum Oxide Layers for Battery Applications Using Hyperspectral Imaging. J. Imaging 2016, 2, 12. https://doi.org/10.3390/jimaging2020012
Gruber F, Wollmann P, Schumm B, Grählert W, Kaskel S. Quality Control of Slot-Die Coated Aluminum Oxide Layers for Battery Applications Using Hyperspectral Imaging. Journal of Imaging. 2016; 2(2):12. https://doi.org/10.3390/jimaging2020012
Chicago/Turabian StyleGruber, Florian, Philipp Wollmann, Benjamin Schumm, Wulf Grählert, and Stefan Kaskel. 2016. "Quality Control of Slot-Die Coated Aluminum Oxide Layers for Battery Applications Using Hyperspectral Imaging" Journal of Imaging 2, no. 2: 12. https://doi.org/10.3390/jimaging2020012