In addition to the electrode materials themselves, what else might we expect to find in the positive-electrode region of a lithium-ion cell? Select all that apply.
CS Electrical And Electronics Staff asked 4 years ago
Options:
- Electrolyte.
- Binders.
- Conductive additives.
- Electrolyte additives.
1 Answers
CS Electrical And Electronics Staff answered 4 years ago
All options are correct answers:
- Electrolyte.(Yes, the electrolyte permeates the cell, including the voids between the particles in the positive electrode.)
- Binders.(Yes. Binders such as polyvinylidene difluoride (PVDF) are often used to “glue together” particles so that the overall electrode structure does not disintegrate under the repeated stresses of cycling.)
- Conductive additives.(Yes. Many positive-electrode active materials do not conduct electron current very well, and so conductive additives such as carbon black are often added.)
- Electrolyte additives.(Yes. Proprietary compounds are often added to the electrolyte to improve performance and to slow down aging processes.)