Department of Engineering, Aarhus University , Hangoevej 2, DK-8200 Aarhus N, Denmark.
Nano Lett. 2015 Feb 11;15(2):1158-65. doi: 10.1021/nl5042287. Epub 2015 Jan 14.
The synthesis, characterization, and electrokinetic energy conversion performance have been investigated experimentally in a charged polymeric membrane based on a blend of nitrocellulose and sulfonated polystyrene. The membrane is characterized by a moderate ion exchange capacity and a relatively porous structure with average pore diameter of 11 nm. With electrokinetic energy conversion, pressure can be converted directly into electric energy and vice versa. From the electrokinetic transport properties, a remarkably large intrinsic maximum efficiency of 46% is found. It is anticipated that the results are an experimental verification of theoretical models that predict high electrokinetic energy conversion efficiency in pores with high permselectivity and hydrodynamic slip flow. Furthermore, the result is a promising step for obtaining efficient low-cost electrokinetic generators and pumps for small or microscale applications.
已对基于硝酸纤维素和磺化聚苯乙烯共混物的荷电聚合物膜进行了合成、表征和电动能量转换性能的实验研究。该膜具有中等的离子交换容量和相对多孔的结构，平均孔径为 11nm。通过电动能量转换，可以将压力直接转换为电能，反之亦然。从电动输运特性来看，发现了显著的内在最大效率 46%。预计这些结果是对理论模型的实验验证，该理论模型预测在具有高选择渗透性和流体动力滑移流的孔中具有高电动能量转换效率。此外，这一结果为获得用于小尺寸或微型应用的高效低成本电动发电机和泵迈出了有前景的一步。
