Description: Fluorinated polysulfonamide based single ion conducting room temperature applicable gel-type polymer electrolytes for lithium ion batteries

This title appears in the Scientific Report : 2019

Fluorinated polysulfonamide based single ion conducting room temperature applicable gel-type polymer electrolytes for lithium ion batteries

Single ion conducting polymer electrolytes (SIPEs) comprised of homopolymers containing a polysulfonylamide segment in the polymer backbone are presented. The polymer structure contains –C(CF3)2 functional groups that due to better solubility allow for effective lithiation, yielding well-defined mat...

Personal Name(s):	Borzutzki, K.
	Thienenkamp, J. / Diehl, M. / Winter, M. / Brunklaus, G. (Corresponding author)
Contributing Institute:	Helmholtz-Institut Münster Ionenleiter für Energiespeicher; IEK-12
Published in:	Journal of materials chemistry / A, 10.1039.C8TA08391F (2019) S. 10.1039.C8TA08391F
Imprint:	London [u.a.] RSC 2019
DOI:	10.1039/C8TA08391F
Document Type:	Journal Article
Research Program:	Electrochemical Storage
Link:	Get full text Get full text OpenAccess OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://dx.doi.org/10.1039/C8TA08391F in citations.
Please use the identifier: http://hdl.handle.net/2128/22667 in citations.

Single ion conducting polymer electrolytes (SIPEs) comprised of homopolymers containing a polysulfonylamide segment in the polymer backbone are presented. The polymer structure contains –C(CF3)2 functional groups that due to better solubility allow for effective lithiation, yielding well-defined materials. An optimized polymer electrolyte membrane was fabricated as a 3 : 1 blend of single ion conducting polymer and PVdF-HFP, which exhibits a high ionic conductivity of 0.52 mS cm−1 and an impressive lithium ion transference number of 0.9, as well as a 7Li self-diffusion coefficient of 4.6 × 10−11 m2 s−1 at 20 °C. The presented polymer electrolyte has superior oxidative stability and long-term stability against lithium metal, thus facilitating operation in LiNi1/3Mn1/3CO1/3O2 (NMC111)/lithium metal cells at 20 °C and 60 °C, thereby clearly demonstrating the application potential of this class of materials.