Proton conductive composite materials using functionalized and crosslinkable VDF/CFTE fluoropolymers and proton conductive inorganics

Mike Chung, Zhicheng Zhang, Elena Chalkova, Chunmei Wang, Mark Fedkin, Sridhar Komarneni, Sanjeev Sharma, Serguei Lvov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations

Abstract

The synthesis of crosslinkable P(VDF-CTFE) copolymer with controllable structure, molecular weight and terminal and side chain silane groups was developed. The chemistry of the synthesis was centered on a specifically designed functional borane initiator containing silane groups. Polymer electrolyte composite membranes were fabricated by dispersion of additive particles in the polymer solution and film casting, followed by thermocompression, which allowed for formation of crosslinking sites in 3-D polymer network. Two types of membranes were investigated: P(VDF-CTFE)/Nafion/ Inorganic and P(VDF-CTFE) with incorporated sulfonated units. Different types of inorganic proton conductors were synthesized and tested in P(VDF-CTFE)/Nafion/ Inorganic membranes. The highest conductivity was obtained using H 3OZr2PO4)3 particles. Optimization of the P(VDF-CTFE)/Nafion/H3OZr2(PO4) 3 membrane composition allowed to substantially increase the membrane conductivity. Two avenues were explored to add sulfonic acid groups to P(VDF-CTFE) to obtain a desirable membrane conductivity without an addition of Nation: introduction of sulfonated silicon dioxide and sulfonated SPETMS.

Original languageEnglish (US)
Title of host publicationECS Transactions - 7th Symposium Devoted to Proton Exchange Membrane Fuel Cells
Pages35-47
Number of pages13
Edition1 PART 1
DOIs
StatePublished - 2007
Event7th Symposium Devoted to Proton Exchange Membrane Fuel Cells - 212th ECS Meeting - Washington, DC, United States
Duration: Oct 7 2007Oct 12 2007

Publication series

NameECS Transactions
Number1 PART 1
Volume11
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other7th Symposium Devoted to Proton Exchange Membrane Fuel Cells - 212th ECS Meeting
CountryUnited States
CityWashington, DC
Period10/7/0710/12/07

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Proton conductive composite materials using functionalized and crosslinkable VDF/CFTE fluoropolymers and proton conductive inorganics'. Together they form a unique fingerprint.

Cite this