Perspektiven von Separatoren für Energiespeicherbatterien
Für Separatoren mit einer Dicke <25 μm geht man von einer durchschnittlichen Porengröße im Submikronbereich aus. Analog zu den Betrachtungen der Porosität muss die
What is a rechargeable battery separator?
Separator is critical to the performance and safety of the rechargeable batteries. The design principles and basic requirements for separators are overviewed. The modification strategies in tailoring the separators' properties are discussed. Separators with high-temperature resistivity and better safety are desirable.
What is a lithium ion battery separator?
The separator also serves as the electrolyte reservoir for the transport of ions during the charging and discharging cycles of a battery. The performance of lithium-ion batteries is greatly affected by the materials and structure of the separators.
What is an inorganic battery separator?
These separators primarily consist of inorganic materials, with or without the addition of polymeric binders. Inorganic separators can significantly enhance the high-temperature tolerance of batteries, maintaining structural stability of the separators even at temperatures above 1000 °C.
Why is a battery separator important?
The major role of the battery separator is to physically isolate the anode from the cathode while allowing mobile Li-ions to transport back and forth . Unfortunately, two technical challenges associated with separator puncture and significant thermal shrinkage of polymer separators threaten the overall safety of batteries.
How do membrane separators affect the performance of lithium ion batteries?
The performance of these devices is greatly affected by the materials and structure of the membrane separators. Separators for lithium–ion batteries (LIBs) can be classified into (1) microporous polymer membranes, (2) nonwoven fabrics, and (3) inorganic composite membranes.
Do functional separators improve the electrochemical performance of batteries?
At present, researches on separators still focus on the improvement performance of the dendrite growth, ion transport, mechanical properties and wettability. Functional separators are also key to improving the electrochemical performance of batteries.
