当前位置: X-MOL 学术Int. J. Hydrogen Energy › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis, thermal properties, conductivity and lifetime of proton conductors based on nanocrystalline cellulose surface-functionalized with triazole and imidazole
International Journal of Hydrogen Energy ( IF 7.2 ) Pub Date : 2020-04-02 , DOI: 10.1016/j.ijhydene.2020.03.071
J. Tritt-Goc , Ł. Lindner , M. Bielejewski , E. Markiewicz , R. Pankiewicz

A new proton conductor based on 1H-1,2,3-triazole doped nanocrystalline cellulose (2.66 CNC-Tri) has been synthesized for possible use as an electrolyte in proton exchange membrane (PEM) cells. The physicochemical properties of 2.66 CNC-Tri were determined and compared with those of imidazole-doped nanocrystalline (1.17 CNC-Im) and pure nanocrystalline cellulose (CNC). The composites were obtained in the form of a film and their synthesis proceeded under vacuum. The maximum conductivity of 2.66 CNC-Tri was measured to be 0.1 × 10−4 S/m at 175 °C and that of 1.17 CNC-Im to be 1.6 × 10−2 S/m at 155 °C, in the anhydrous state. The composite 2.66 CNC-Tri, compared to 1.17 CNC-Im, has much better thermal properties manifested as stability of the matrix and durability of the heterocyclic molecule. The lifetimes of 2.66 CNC-Tri fulfills the requirements of the U.S. Department of Energy for the minimum lifetimes of a PEM based fuel cell for cars.



中文翻译:

基于三唑和咪唑表面官能化的纳米晶纤维素的质子导体的合成,热性能,电导率和寿命

合成了一种新的基于1H-1,2,3-三唑掺杂的纳米晶纤维素的质子导体(2.66 CNC-Tri),可用作质子交换膜(PEM)电池中的电解质。测定了2.66 CNC-Tri的理化性质,并将其与掺有咪唑的纳米晶(1.17 CNC-Im)和纯纳米晶纤维素(CNC)进行了比较。以薄膜形式获得复合材料,并且它们的合成在真空下进行。 在175°C下测得的2.66 CNC-Tri的最大电导率为0.1×10 -4 S / m,而1.17 CNC-Im的最大电导率为1.6×10 -2 155°C下的S / m,无水状态。与1.17 CNC-Im相比,复合材料2.66 CNC-Tri具有更好的热性能,表现为基体的稳定性和杂环分子的耐用性。2.66 CNC-Tri的使用寿命符合美国能源部对基于PEM的汽车燃料电池的最小使用寿命的要求。

更新日期:2020-04-03
down
wechat
bug