Ionic thermal up-diffusion in nanofluidic salinity-gradient energy harvesting.

ABSTRACT: Advances in nanofabrication and materials science give a boost to the research in nanofluidic energy harvesting. Contrary to previous efforts on isothermal conditions, here a study on asymmetric temperature dependence in nanofluidic power generation is conducted. Results are somewhat counterintuitive. A negative temperature difference can significantly improve the membrane potential due to the impact of ionic thermal up-diffusion that promotes the selectivity and suppresses the ion-concentration polarization, especially at the low-concentration side, which results in dramatically enhanced electric power. A positive temperature difference lowers the membrane potential due to the impact of ionic thermal down-diffusion, although it promotes the diffusion current induced by decreased electrica

SUBMITTER: Long R 

PROVIDER: S-EPMC8291421 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature