期刊
MATERIALS
卷 11, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/ma11040516
关键词
sulfonated poly (ether ether ketone); sulfonated graphene; proton conductivity; thermal stability; proton exchange membrane
类别
资金
- National Natural Science Foundation of China [51774314, 41206063]
- key research and development program of Shandong Province [2017GGX20123]
- Shandong Provincial Natural Science Foundation [ZR2017MEM015]
- Applied Basic Research Program of Qingdao [16-5-1-84-jch]
- Fundamental Research Funds for the Central Universities [16CX05011A, 17CX02063]
As a clean energy utilization device, full cell is gaining more and more attention. Proton exchange membrane (PEM) is a key component of the full cell. The commercial-sulfonated, tetrafluoroethylene-based fluoropolymer-copolymer (Nafion) membrane exhibits excellent proton conductivity under a fully humidified environment. However, it also has some disadvantages in practice, such as high fuel permeability, a complex synthesis process, and high cost. To overcome these disadvantages, a low-cost and novel membrane was developed. The sulfonated poly (ether ether ketone) (SPEEK) was selected as the base material of the proton exchange membrane. Sulfonated graphene (SG) was cross-linked with SPEEK through the elimination reaction of hydrogen bonds. It was found that the sulfonic acid groups and hydrophilic oxygen groups increased obviously in the resultant membrane. Compared with the pure SPEEK membrane, the SG-reinforced membrane exhibited better proton conductivity and methanol permeability prevention. The results indicate that the SG/SPEEK could be applied as a new proton exchange membrane in fuel cells.
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