Polymer electrolytes with multiple conductive channels prepared from NBR/SBR latex films impregnated with lithium salt and plasticizer

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.2048685· OSTI ID:122734

Matsumoto, Morihiko; Rutt, J S; Nishi, Shiro ^[1]

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1. Nippon Telegraph and Telephone Corp., Musashino, Tokyo (Japan)

Polymer electrolytes, composed of a polar polymer acting as a host matrix for lithium-salt solutions, have high ionic conductivity and have been studied for application in advanced electronic devices such as the rechargeable lithium battery. Polymer electrolytes with high ionic conductivity (> 10{sup {minus}3} S/cm) and good tensile strength were prepared by swelling poly(acrylonitrile-co-butadiene) (NBR)/poly(styrene-co-butadiene) (SBR)/LiClO{sub 4} latex films with {gamma}-butyrolactone ({gamma}-BL) or LiClO{sub 4}/{gamma}-BL plasticizer. Before swelling, the LiClO{sub 4} phase is formed at the particle interface. After politicization, two ion-conductive channels are present: the LiClO{sub 4} phase is present at the interface of the latex particles, and the NBR phase is formed from NBR latex particles. These regions are polar and impregnated selectively with polar {gamma}-BL solvent or LiClO{sub 4}/{gamma}-BL solution, building primary and secondary ion-conductive channels, respectively. The SBR phase (formed from SBR latex particles) is nonpolar and not impregnated, providing a mechanically supportive matrix. High ionic conductivity on the order of 10{sup {minus}3} S/cm is achieved when NBR/SBR(50/50)/LiClO{sub 4} latex film was saturated on 0.2 to 0.4M LiClO{sub 4}/{gamma}-BL solutions. Various microscopic and macroscopic analyses suggest that two types of ion-conductive channels exist in the polymer electrolyte film.

• Sponsoring Organization: USDOE
• OSTI ID: 122734
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 9 Vol. 142; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
ACRYLONITRILE
BUTADIENE
CHLORATES
COPOLYMERS
ELECTRIC BATTERIES
ELECTRIC CONDUCTIVITY
FABRICATION
LACTONES
LITHIUM COMPOUNDS
ORGANIC POLYMERS
POLYSTYRENE
SOLID ELECTROLYTES