How to characterize and optimize the particle size and shape of battery electrodes

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00:00:00 Welcome
00:00:40 How to characterize and optimize electrode properties for improved battery performance
00:00:50 Outline
00:01:10 A (brief) history of batteries
00:01:33 A (brief) history of batteries
00:01:47 A (brief) history of batteries
00:02:34 Battery types
00:02:56 Primary batteries
00:03:18 Secondary batteries
00:04:07 Battery Manufacture Process
00:04:41 Anatomy of a battery
00:05:09 Battery Performance
00:05:16 Battery Performance
00:05:21 Battery Performance
00:05:24 Battery Performance
00:05:31 Battery Power
00:05:35 Battery Power
00:05:50 Battery Power
00:05:58 Untitled
00:06:06 Untitled
00:06:18 Untitled
00:06:19 Untitled
00:06:33 Untitled
00:06:37 Untitled
00:07:00 Energy storage capacity
00:07:05 Energy storage capacity
00:07:13 Energy storage capacity
00:07:20 Summary
00:07:39 Summary
00:08:24 Summary
00:08:43 Measuring size and shape
00:08:46 Measuring size and shape
00:08:48 Measuring size and shape
00:08:59 Measuring size and shape
00:09:06 Laser diffraction
00:09:11 A typical laser diffraction particle sizing system
00:09:41 Laser diffraction calculates particle size by measuring particle light scattering intensity
00:10:18 Laser diffraction calculates particle size by measuring particle light scattering intensity
00:10:47 Laser diffraction calculates particle size by measuring particle light scattering intensity
00:11:11 Image Analysis
00:11:17 A typical automated morphological imaging system
00:11:51 Untitled
00:12:22 Untitled
00:13:42 Case Study I – alkaline battery
00:14:24 Case Study I – alkaline battery
00:14:54 Case Study I – alkaline battery
00:15:23 Case Study I – alkaline battery
00:16:31 Case Study II – Lithium-ion battery
00:16:52 Size
00:17:22 Shape – aspect ratio
00:17:28 What is ASPECT RATIO?
00:17:48 Shape – aspect ratio
00:17:56 Shape – aspect ratio & circularity
00:18:08 What is CIRCULARITY?
00:18:22 Shape – aspect ratio & circularity
00:18:38 Shape – aspect ratio & circularity
00:18:56 Conclusion
00:19:04 Conclusion
00:19:11 Conclusion
00:19:15 Conclusion
00:19:20 Conclusion
00:19:34 Summary
00:19:43 Summary
00:20:01 Summary
00:20:23 Summary
00:20:48 Thank you for your attentionAny questions?
An important aspect in the design of the battery is the particle size, particle size distribution and particle shape of the materials used within the electrodes. Small particle size electrodes increase the rate of electrochemical reactions due to their larger surface area, which is favorable in terms of power production. Energy storage capacity and electrolyte mobility on the other hand is related to porosity, which is influenced by particle size and particle shape distribution, with larger particle sizes generally favored.

To meet the conflicting requirements for both power and storage capacity, it is necessary to optimize both particle size distribution and shape. Analytical methods such as image analysis and laser diffraction enable detailed characterization of battery component materials in terms of their particle size and shape. This presentation will outline how such information can be applied to reveal fundamental links between these parameters and final battery performance.