Graphene Oxide fibers as high-performance nanofluidics osmotic power generators
Paper ID : 1070-ICNS
Hamidreza Ghanbari1, Ali Esfandiar *2, soheil ghods3, Mehran Khansanami4
1Sharif university of technology
2Department of Physics, Sharif University of Technology
3physics, sharif, tehran, Iran
4Department of Physics, Sharif University of Technology, tehran, Iran
Two-dimensional nano-channels are promising candidates to convert osmotic energy from salinity gradients to electricity due to the confinement and the mobility difference of ions. Conventional membranes such as porous ceramics or polymer-based structures exhibit undesirable power densities (less than 1W.m-2). Here, we demonstrate Graphene Oxide fibers as new well-ordered membranes as high-performance nanofluidic osmotic power generators. The power density can achieve a value of approximately 9 W.m-2 using salt (KCl) gradient concentration of 103. Our Experiments reveal that both the confinement on ionic transport created via intercalated cations through GO sheets and the surface charges on the nano-channel walls lead to a high mobility ratio for ions that extracted to be µk / µcl = 11 which consequently contributes to such a significant energy conversion performance. This work highlights the promise in using fibers structures as energy convertors on a large scale that could find vast applications in the field of energy generation.
Graphene Oxide, Fibers, Nanofluidics, Energy Conversion;
Status : Abstract Accepted (Oral Presentation)