Output density quantification of electricity generation by flowing deionized water on graphene

Kei Kuriya, Kotaro Ochiai, Golap Kalita, Masaki Tanemura, Atsuki Komiya, Gota Kikugawa, Taku Ohara, Ichiro Yamashita, Fumio S. Ohuchi, M. Meyyappan, Seiji Samukawa, Katsuyoshi Washio, Takeru Okada

Research output: Contribution to journalArticlepeer-review

Abstract

Energy conversion by water flowing over graphene is a promising mode of energy harvesting. However, the mechanism, energy-conversion efficiency, and quantification of power density for this mode of interfacial electricity generation remain unknown. Quantification of the output performance for the flow-induced electricity generation using graphene is presented in this work. The output performance per unit contact area between water and graphene is found to be proportional to the flow speed, with an electromotive force density of 0.0025 [μ V / mm 2 / mm / s] for the conditions used in this work. The ability to quantify output density will help to construct guidelines for future applications of this form of electricity generation.

Original languageEnglish
Article number123905
JournalApplied Physics Letters
Volume117
Issue number12
DOIs
Publication statusPublished - 2020 Sep 21

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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