耐久性
锐钛矿
相对湿度
质子交换膜燃料电池
钛
材料科学
复合数
膜
化学工程
氧化物
二氧化钛
电导率
法拉第效率
复合材料
高分子化学
化学
冶金
有机化学
工程类
电化学
催化作用
电极
光催化
物理
物理化学
生物化学
热力学
作者
Ae Rhan Kim,Mohanraj Vinothkannan,Kyu Ha Lee,Ji Young Chu,Byung‐Hyun Park,Myung‐Kwan Han,Dong Jin Yoo
摘要
In this work, sulfonated diblock copolymers (SDBCs) were prepared by polycondensation of sulfonated poly(ether-ether-ketone) (SPEEK) and hydrophobic oligomer, which were combined with sintered anatase titanium oxide (S-An-TiO2) to create a hybrid membrane for apply in proton exchange membrane fuel cells (PEMFCs) operating with low relative humidity (RH). Then, a series of composite membranes (SDBC/S-An-TiO2) were prepared by varying the wt% of S-An-TiO2 blended with SDBC. The results showed that appropriate quantity (ie, 15 wt%) of S-An-TiO2 can significantly improve the proton conductivity and physiochemical properties of prepared composite membrane, as well as the PEMFC performance and durability under 20% RH. The 1.5 wt% of SDBC/S-An-TiO2 offers high current output, power output, and durability values at 60°C under 20% RH, which are 0.207 A cm−2, 0.074 W cm−2 and over 90 hours, respectively. These results can be attributed to the good interfacial compatibility between S-An-TiO2 and SDBC.
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