Tert-Amylbenzene is a chemical intermediate
TAB has outstanding features – as a radical interceptor and redox shuttle – to increase the safety of secondary lithium batteries. Thus, TAB effectively reduces the risks from overloading and overheating LIBs.
TAB is used in batteries for mobile communication devices. Use for LIBs in the car industry is currently being investigated.
The use of TAB in electrolytes offers the following advantages:
- Increased security in the voltage range from 4.6 V – 5.0 V
- Increased number of charge/discharge cycles
TAB has a higher oxidation initiation voltage(vs. Li/Li+) than the operating voltage of cathode, so that it is oxidized at a higher voltage than the operating voltage of the cathode.
At the stage of overcharge in the battery, TAB can prevent the ignition and explosion of the battery through following mechanisms, such as CID-reverse and an increase in internal impedance.
Particularly, through oxidation of TAB, it can directly generate gas along with heat generation, or it can cause the shut-down of a separator by an increase in internal temperature that results from heat generation.
Therefore, indirectly TAB contributes to the improvement in the risk of the battery under overcharge or thermal runway situation.
Solvay’s TAB has relatively very low level of moisture, a critical factor of the electrolyte performance.
LSV (Linear Sweep Voltammetry) comparison test
TAB has higher oxidation potential than BP (Biphenyl) and CHB (Cyclcohexyl benzene), well-known compounds for overcharge protection.