Chapter 12
Separators
Yuping Wu, Shiyong Zhao, and Teunis van Ree
In batteries, separators are used to avoid short circuit between negative and positive electrodes. They are therefore generally regarded to be conductors not of electrons but of ions. Some separators for batteries and their properties are shown in Table 12.1 [1].
Table 12.1
Some Separators for Small Batteries and Their Properties
|
Battery |
Electrode Materials |
Electrolyte |
Separator |
||
|
Positive |
Negative |
Material |
Required Property |
||
|
Lead acid |
PbO2 |
Pb |
H2SO4 |
Glass fiber mats |
To contain electrolytes |
|
Ni-Cd |
NiOOH |
Cd |
KOH |
Polyamide nonwoven fabric, polyolefin nonwoven fabric |
To contain electrolytes |
|
Ni-MH |
NiOOH |
MH |
KOH |
||
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