Cross‐Linked Polyvinyl Alcohol Films as Alkaline Battery Separators
Author(s) -
D. W. Sheibley,
Michelle A. Manzo,
O. D. Gonzalez-Sanabria
Publication year - 1983
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1.2119690
Subject(s) - polyvinyl alcohol , reagent , separator (oil production) , materials science , alcohol , battery (electricity) , chemistry , nuclear chemistry , organic chemistry , power (physics) , physics , quantum mechanics , thermodynamics
Cross-linking methods were investigated to determine their effect on the performance of polyvinyl alcohol (PVA) films as alkaline battery separators. The following types of cross-linked PVA films are discussed: (1) PVA-dialdehyde blends post-treated with an acid or acid periodate solution (two-step method) and (2) PVA-dialdehyde blends cross-linked during film formation (drying) by using a reagent with both aldehyde and acid functionality (one-step method). Laboratory samples of each cross-linked type of film were prepared and evaluated in standard separator screening tests. The pilot-plant batches of films were prepared and compared to measure differences due to the cross-linking method. The pilot-plant materials were then tested in nickel oxide - zinc cells to compare the two methods with respect to performance characteristics and cycle life. Cell test results are compared with those from tests with Celgard.
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