Pore size, zinc penetration, and zinc diffusion studies on PPQ/CA separators. Research and development report

Technical Report · Mon Feb 02 00:00:00 EST 1981

OSTI ID:5514237

Angres, I; Parkhurst, W

Studies were performed of some properties of co-polymeric polyphenylquinoxaline/cellulose acetate (PPQ/CA-60/40) membranes that are candidate separator materials for secondary alkaline batteries. Pore size measurements were obtained by bubble pressure, mercury porosimetry and electron microscopy methods. Zinc penetration measurements and measurements of zinc ion diffusion through the membrane were obtained in aqueous potassium hydroxide media using standardized electrolysis methods. For comparison purposes, dendrite penetration and zinc diffusion measurements were also obtained for two conventional cellulosic separator materials. It was concluded that the methods chosen are valid and useful for assessing the quality of separator materials. It was also concluded that PPQ/CA-60/40 membranes compare favorably with conventional separator materials.

• Research Organization: Naval Surface Weapons Center, Silver Spring, MD (USA)
• OSTI ID: 5514237
• Report Number(s): AD-A-107354/3
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
BATTERY SEPARATORS
MATERIALS
PERFORMANCE
BUBBLES
DIFFUSION
FEASIBILITY STUDIES
IONS
MEMBRANES
POROSITY
POTASSIUM COMPOUNDS
ZINC
ALKALI METAL COMPOUNDS
CHARGED PARTICLES
ELEMENTS
METALS
250902* - Energy Storage- Batteries- Performance & Testing
250903 - Energy Storage- Batteries- Materials
Components
& Auxiliaries