Fei Mingming, Lin Ruizhi, Deng Yuming, Xian Hongxi, Bian Renji, Zhang Xiaole, Cheng Jigui, Xu Chenxi, Cai Dongyu
School of Materials Science and Engineering, Hefei University of Technology, Hefei, Anhui, 230009, People's Republic of China. Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei, Anhui, 230009, People's Republic of China.
Nanotechnology. 2018 Jan 19;29(3):035403. doi: 10.1088/1361-6528/aa9ab0.
This report demonstrated the first study on the use of a new 2D nanomaterial (Mxene) for enhancing membrane performance of intermediate temperature (>100 °C) polymer electrolyte membrane fuel cells (ITPEMFCs). In this study, a typical TiCT -MXene was synthesized and incorporated into polybenzimidazole (PBI)-based membranes by using a solution blending method. The composite membrane with 3 wt% TiCT -MXene showed the proton conductivity more than 2 times higher than that of pristine PBI membrane at the temperature range of 100 °C-170 °C, and led to substantial increase in maximum power density of fuel cells by ∼30% tested at 150 °C. The addition of TiCT -MXene also improved the mechanical properties and thermal stability of PBI membranes. At 3 wt% TiCT -MXene, the elongation at break of phosphoric acid doped PBI remained unaffected at 150 °C, and the tensile strength and Young's modulus was increased by ∼150% and ∼160%, respectively. This study pointed out promising application of MXene in ITPEMFCs.
本报告展示了关于使用新型二维纳米材料（MXene）来提高中温（>100°C）聚合物电解质膜燃料电池（ITPEMFCs）膜性能的首次研究。在本研究中，通过溶液共混法合成了典型的TiCT - MXene并将其掺入基于聚苯并咪唑（PBI）的膜中。含有3 wt% TiCT - MXene的复合膜在100°C至170°C的温度范围内，其质子传导率比原始PBI膜高出两倍以上，并使在150°C测试的燃料电池最大功率密度大幅提高约30%。TiCT - MXene的添加还改善了PBI膜的机械性能和热稳定性。在3 wt% TiCT - MXene时，磷酸掺杂PBI在150°C下的断裂伸长率不受影响，拉伸强度和杨氏模量分别提高了约150%和160%。本研究指出了MXene在ITPEMFCs中的应用前景。
