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Battery separators.

Pankaj Arora1, Zhengming John Zhang

  • 1Celgard, LLC, 13800 South Lakes Dr., Charlotte, North Carolina 28273, USA. pankajarora@celgard.com

Chemical Reviews
|January 27, 2005
PubMed
Summary
This summary is machine-generated.

Battery separators are critical for performance and safety, but ideal materials don't exist. This review helps battery manufacturers select optimal separators by examining technical aspects and applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Battery Technology

Background:

  • Ideal battery separators possess specific properties like thinness, zero ionic resistance, infinite electronic resistance, tortuosity, and chemical inertness.
  • Real-world separators are electronically insulating membranes whose ionic resistivity is tuned via thickness and porosity.
  • No single separator meets all design needs, necessitating application-specific compromises.

Purpose of the Study:

  • To provide a comprehensive review of battery separators and their properties.
  • To aid battery manufacturers in selecting appropriate separators based on technical specifications and applications.
  • To highlight the critical role of separators in battery performance, safety, and longevity.

Main Methods:

Related Experiment Videos

  • Comprehensive literature review of existing battery separator technologies.
  • Analysis of separator properties including ionic conductivity, electronic insulation, and physical characteristics.
  • Discussion of application-specific requirements and trade-offs in separator selection.

    • Main Results:

    • A wide variety of battery separators are available, each with unique characteristics.
    • Separator properties significantly impact battery power, capacity, safety, and lifespan.
    • Optimizing separators is crucial for advancing high-capacity battery technologies.

    Conclusions:

    • Battery separator selection is application-dependent, requiring careful consideration of technical parameters.
    • Collaboration between separator and battery manufacturers is essential for developing next-generation batteries with enhanced reliability and safety.
    • Further development of improved separators is vital for future high-capacity battery advancements.