Sulfonated poly(ether ether ketone) membranes crosslinked with sulfonic acid containing benzoxazine monomer as proton exchange membranes |
| |
Authors: | Yun-Sheng Ye Chih-Chia Cheng Li-Tuan Tsai |
| |
Affiliation: | a Institute of Applied Chemistry, National Chiao-Tung University, Hsin-Chu, Taiwan b Material and Chemical Research Laboratories, Industrial Technology Research Institute, Chutung, Taiwan |
| |
Abstract: | The incorporation of benzoxazine (Ba) or sulfonic acid containing benzoxazine (SBa) as a crosslinking agent in SPEEK proton exchange membrane (PEM) can substantially improve the SPEEK membrane performance. The SPEEK-SBa membranes give higher effective selectivity than corresponding SPEEK-Ba membranes under close crosslinker loading and thus are more suitable to be used in direct methanol fuel cells. The best achieved SPEEK-SBa composition (SBa40) gives reasonable proton conductivity (0.91 × 10−2 S cm−1) but significantly lower methanol permeability (6.5 × 10−8 S2 cm−1). The achieved effective selectivity (Φ = SPEEK-SBa40: 14.0 × 104 S s cm−3) is substantially higher than the plain SPEEK (Φ = 7.24 × 104 S s cm−3) which has great potential for practical applications in DMFCs. |
| |
Keywords: | Benzoxazine Proton exchange membrane SPEEK |
本文献已被 ScienceDirect 等数据库收录! |