Date recorded: November 16 2016

Duration: 01 hours 46 minutes 05 seconds

The market for batteries is rapidly growing, and the increased demand for portable electronic devices, including mobile phones and laptops requires greater advances in battery technology in order to provide a light weight, long lasting and stable power source. Battery technology is also being pushed further in electric vehicle applications, which require even more lightweight, higher power and fast charging batteries.

An important aspect in the design of the battery are the physical properties of the electrode material including particle size and particle shape, but also the properties of the electrode slurry, in particular the rheology, which is critical for the electrode fabrication process.

In this virtual seminar experts from Netzsch and Malvern will discuss how to optimally manufacture and characterize battery slurries and their active particle components to give the requisite end use battery properties and performance.

How to characterize and optimize electrode particle properties

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.

Measuring and controlling the rheological properties of battery slurries

The primary route for electrode manufacture is to apply a slurry or dispersion of electrode material onto a metal foil. The slurry is composed of electrode particles (anode or cathode) and binder material (solvent and polymer). The rheology of the slurry is important for determining the stability of the slurry, how easily it can be applied, and the resulting film properties including thickness and density which influence ion transfer rate and recharge cycle time of the battery. This presentation will discuss the factors affecting the rheological properties of dispersions such as battery slurries. These factors include critical processing parameters such as shear rate and temperature, and compositional factors such as particle size, shape and size distribution, which have a profound influence on the viscosity, viscoelastic and thixotropic properties. With the help of case studies we will show how rheological tests can be used to optimize the production of battery slurries and subsequence electrode fabrication.

Battery manufacture

We need batteries for mobile phones, tablets, computers, tools, toys, medical devices, cars, bicycles and many more. To increase the power, the capacity, the life cycle and to reduce the charging time, the weight and the size of batteries we have to improve the chemical composition, the particle size distribution and the homogeneity of battery slurries. NETZSCH Grinding & Dispersing is the world leading group of companies manufacturing equipment and machines for mixing, classification, dispersing, dry and wet grinding and others.

Part 1: Mixing technologies for the production of battery slurries

The first presentation will give a survey of equipment for mixing, dispersing and homogenization of binders, additives and active materials for production of high viscose battery slurries. Finally the performance of three batteries produced with different production process will be compared.

Part 2: Dry and wet grinding of active battery materials

The second presentation gives an overview about dry and wet grinding technologies. Three different examples for grinding of active battery material will be discussed.
Table of contents
1. Welcome
00:14
2. Agenda
00:41
3. Introduction
00:23
4. Worldwide Partnership for Material Characterization
00:14
5. The NETZSCH Group and its globally active Business Units
00:57
6. The Business Unit Grinding & Dispersing
01:13
7. Business Field – Chemical Industry – Batteries
02:00
8. Untitled
01:20
9. Battery Applications
00:50
10. LIB Demand – Mobile and IT Devices
00:49
11. LIB Market / Cell demand
01:18
12. LIB Market / Top 10 EV Passenger cars brand
01:32
13. Type of Active Materials in Lithium-Ion Batteries
01:17
14. NETZSCH Equipment for Production and Characterization of Battery Slurries
01:23
15. Typical Schematic Diagram to Manufacture Layered Compounds LiMO2
00:57
16. Requirements of Dry Grinding for Active Materials
01:09
17. Test Results of Dry Grinding for Layered Compounds, LiMO2 Fine fineness NMC
01:14
18. Typical Schematic Diagram to Manufacture Spinel / Olivine Compounds, LiM2O4 / LiMPO4
01:44
19. An Example of Wet Grinding Down to Sub-Micron Olivine Compounds, Lithium Iron Phosphate (LFP)
00:40
20. An Example of Wet Grinding Down to Sub-Micron Spinel Compounds, LTO (Li4Ti5O12)0
01:04
21. Silicon Metal Alloys for Anode Material Dealing with Volume Expansion
01:20
22. An Example of Wet Grinding Down to Nanometer Range for Metal Silicon
01:04
23. NETZSCH Nano Mill, Zeta® RS
00:50
24. Ceramic Coated Separator (CCS)
00:59
25. Carbon Nano Tubes - Conductive Additives
01:00
26. An Example of Dispersing of Conductive Additives- CNT / CNT + Carbon Black
01:10
27. NETZSCH Inline Mixer / DispersionizerFor Processing of Dispersing Conductive Additives
00:59
28. Planetary Mixer Type PMH
00:25
29. Conclusions
00:17
30. Untitled
00:07
31. Thank you for your attentionAny questions?
00:18
32. Untitled
00:41
33. How to characterize and optimize electrode properties for improved battery performance
00:10
34. Outline
00:20
35. A (brief) history of batteries
00:22
36. A (brief) history of batteries
00:14
37. A (brief) history of batteries
00:46
38. Battery types
00:21
39. Primary batteries
00:23
40. Secondary batteries
00:49
41. Battery Manufacture Process
00:34
42. Anatomy of a battery
00:28
43. Battery Performance
00:08
44. Battery Performance
00:04
45. Battery Performance
00:08
46. Battery Performance
00:07
47. Battery Power
00:04
48. Battery Power
00:15
49. Battery Power
00:08
50. Untitled
00:08
51. Untitled
00:12
52. Untitled
00:01
53. Untitled
00:14
54. Untitled
00:04
55. Untitled
00:20
56. Energy storage capacity
00:06
57. Energy storage capacity
00:04
58. Energy storage capacity
00:13
59. Summary
00:19
60. Summary
00:46
61. Summary
00:19
62. Measuring size and shape
00:03
63. Measuring size and shape
00:02
64. Measuring size and shape
00:12
65. Measuring size and shape
00:07
66. Laser diffraction
00:07
67. A typical laser diffraction particle sizing system
00:33
68. Laser diffraction calculates particle size by measuring particle light scattering intensity
00:38
69. Laser diffraction calculates particle size by measuring particle light scattering intensity
00:31
70. Laser diffraction calculates particle size by measuring particle light scattering intensity
00:24
71. Image Analysis
00:06
72. A typical automated morphological imaging system
00:35
73. Untitled
00:32
74. Untitled
01:21
75. Case Study I – alkaline battery
00:41
76. Case Study I – alkaline battery
00:30
77. Case Study I – alkaline battery
00:29
78. Case Study I – alkaline battery
01:09
79. Case Study II – Lithium-ion battery
00:22
80. Size
00:26
81. Shape – aspect ratio
00:10
82. What is ASPECT RATIO?
00:21
83. Shape – aspect ratio
00:08
84. Shape – aspect ratio & circularity
00:12
85. What is CIRCULARITY?
00:15
86. Shape – aspect ratio & circularity
00:17
87. Shape – aspect ratio & circularity
00:19
88. Conclusion
00:09
89. Conclusion
00:08
90. Conclusion
00:07
91. Conclusion
00:06
92. Conclusion
00:14
93. Summary
00:09
94. Summary
00:19
95. Summary
00:23
96. Summary
00:26
97. Thank you for your attentionAny questions?
02:24
98. Untitled
01:31
99. Untitled
00:35
100. Classifier Mill, Type CSM
01:13
101. Batterie Aktivmaterial Lithium Kobalt Oxid
00:50
102. Why Steam?
01:03
103. Why Steam?
00:48
104. Why Steam?
00:05
105. Why Steam?
01:00
106. Results and Applications
00:30
107. Results and Applications
00:26
108. General Description of Agitator Bead Mills
01:28
109. Development of Agitator Bead Mills (at NETZSCH-Feinmahltechnik GmbH)
01:17
110. Alpha® 22 and Alpha® 45
00:44
111. Application-related use of different Grinding Systems
00:18
112. Nano Mill Zeta® Rs Handling
00:49
113. Nano Mill Zeta® Rs
00:46
114. Zeta® Rs 60 with SDC-System
00:42
115. Wet Grinding of Silicon
01:04
116. Conclusion
00:53
117. Untitled
00:17
118. Thank you for your attentionAny questions?
00:21
119. Untitled
00:41
120. Untitled
00:14
121. Outline
00:27
122. Processing of Battery Slurries
00:58
123. Flow Properties: Shear Viscosity of Battery Slurries
02:04
124. Untitled
02:17
125. Untitled
01:29
126. Untitled
01:18
127. Choice of Geometry: Rotational Rheometry
04:56
128. Correct Choice of Geometry: Considering D90 of PSD
00:36
129. Untitled
03:39
130. Zero Shear Viscosity relates to Settling Speed
02:27
131. Untitled
02:24
132. Untitled
01:22
133. Untitled
04:32
134. Viscoelastic Properties of Battery Slurries: Oscillatory Rheometry
02:04
135. Untitled
02:47
136. Summary
00:52
137. Thank you for your attentionAny questions?
00:05
138. Contact Information
01:02