High Electrokinetic Energy Conversion Efficiency in Charged Nanoporous Nitrocellulose/Sulfonated Polystyrene Membranes
详细信息 查看全文
- 作者：Sofie Haldrup ; Jacopo Catalano ; Michael Ryan Hansen ; Manfred Wagner ; Grethe Vestergaard Jensen ; Jan Skov Pedersen ; Anders Bentien
- 刊名：Nano Letters
- 出版年：2015
- 出版时间：February 11, 2015
- 年：2015
- 卷：15
- 期：2
- 页码：1158-1165
- 全文大小：389K
- ISSN：1530-6992
文摘
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.