1. Polybenzimidazole/Mxene composite membranes for intermediate temperature polymer electrolyte membrane fuel cells
- Author
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Yuming Deng, Chenxi Xu, Renji Bian, Dongyu Cai, Xiaole Zhang, Jigui Cheng, Mingming Fei, Xian Hongxi, and Ruizhi Lin
- Subjects
chemistry.chemical_classification ,Materials science ,Mechanical Engineering ,Bioengineering ,02 engineering and technology ,General Chemistry ,Polymer ,Electrolyte ,Conductivity ,Atmospheric temperature range ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Membrane ,chemistry ,Chemical engineering ,Mechanics of Materials ,Ultimate tensile strength ,Ionic conductivity ,General Materials Science ,Thermal stability ,Electrical and Electronic Engineering ,0210 nano-technology - Abstract
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 Ti3C2T x -MXene was synthesized and incorporated into polybenzimidazole (PBI)-based membranes by using a solution blending method. The composite membrane with 3 wt% Ti3C2T x -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 Ti3C2T x -MXene also improved the mechanical properties and thermal stability of PBI membranes. At 3 wt% Ti3C2T x -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.
- Published
- 2017
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