Novel polymer electrolytes prepared by copolymerization of ionic liquid monomers

Polymers for Advanced Technologies - Tập 13 Số 8 - Trang 589-594 - 2002
Masahiro Yoshizawa‐Fujita1, Wataru Ogihara1, Hiroyuki Ohno1
1Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184–8588, Japan

Tóm tắt

AbstractIonic liquid monomer couples were prepared by the neutralization of 1‐vinylimidazole with vinylsulfonic acid or 3‐sulfopropyl acrylate. These ionic liquid monomer couples were viscous liquid at room temperature and showed low glass transition temperature (Tg) at −83 °C and −73 °C, respectively. These monomer couples were copolymerized to prepare ion conductive polymer matrix. Thus prepared ionic liquid copolymers had no carrier ions, and they showed very low ionic conductivity of below 10−9 S cm−1. Equimolar amount of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) to imidazolium salt unit was then added to generate carrier ions in the ionic liquid copolymers. Poly(vinylimidazolium‐co‐vinylsulfonate) containing equimolar LiTFSI showed the ionic conductivity of 4 × 10−8 S cm−1 at 30 °C. Advanced copolymer, poly(vinylimidazolium‐co‐3‐sulfopropyl acrylate) which has flexible spacer between the anionic charge and polymer main chain, showed the ionic conductivity of about 10−6 S cm−1 at 30 °C, which is 100 times higher than that of copolymer without spacer. Even an excess amount of LiTFSI was added, the ionic conductivity of the copolymer kept this conductivity. This tendency is completely different from the typical polyether systems. Copyright © 2002 John Wiley & Sons, Ltd.

Từ khóa


Tài liệu tham khảo

10.1039/c39920000965

10.1039/c39940000299

10.1149/1.2044332

10.1021/ic951325x

10.1016/S0022-1139(99)00111-6

10.1021/jp984145s

10.1038/45514

10.1149/1.1391827

10.1002/(SICI)1097-4660(199704)68:4<351::AID-JCTB613>3.0.CO;2-4

10.1021/cr980032t

10.1246/cl.2001.262

10.1039/A803999B

10.1021/ic00133a078

10.1149/1.1394036

10.1149/1.1369218

10.1016/S0022-0728(98)00285-X

10.1149/1.2055041

10.1016/S0013-4686(99)00330-8

10.1039/b101079o

10.1016/S0013-4686(00)00733-7

10.1016/S0013-4686(99)00334-5

10.1002/1099-1581(200008/12)11:8/12<534::AID-PAT2>3.0.CO;2-R

10.1246/cl.1999.889

10.1016/S0013-4686(00)00777-5

10.1246/cl.1998.751

Yoshizawa M, 2000, Preparation and Ionic conductivity of Molten Salt‐Type Anionic Polymers, Polymer Preprints, Japan, 49, 3213

Takeoka S, 1991, Ion Dissociation of Salts in Polyion Complexes and Adding Effect of Poly(oxyethylene), Polymer Preprints, Japan, 40, 594

10.1016/0167-2738(93)90380-L

10.1021/ma00050a015

Thông tin
Thông tin xuất bản

Polymers for Advanced Technologies

Tập 13 Số 8

589-594

Thông tin tác giả