Nitrogen doping effect on flow-induced voltage generation from graphene-water interface

Takeru Okada; Golap Kalita; Masaki Tanemura; Ichiro Yamashita; M. Meyyappan; Seiji Samukawa

doi:10.1063/1.5007273

Nitrogen doping effect on flow-induced voltage generation from graphene-water interface

Takeru Okada, Golap Kalita, Masaki Tanemura, Ichiro Yamashita, M. Meyyappan, Seiji Samukawa

Innovative Energy Research Center

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Liquid-flow-induced generation of electricity using nanocarbons, particularly graphene-water interface, has received attention for energy harvesting. Here, we have obtained voltage generation from a single water droplet motion on graphene. We have investigated the effect of the graphene surface condition on flow-induced voltage generation, which is controlled by heteroatom doping. Nitrogen-doped graphene shows three times higher voltage generation compared to pristine graphene due to the doping-induced surface charge of graphene. Graphene surface potential tuning by doping is shown to play an important role in voltage generation.

Original language	English
Article number	023902
Journal	Applied Physics Letters
Volume	112
Issue number	2
DOIs	https://doi.org/10.1063/1.5007273
Publication status	Published - 2018 Jan 8

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.5007273

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title = "Nitrogen doping effect on flow-induced voltage generation from graphene-water interface",

abstract = "Liquid-flow-induced generation of electricity using nanocarbons, particularly graphene-water interface, has received attention for energy harvesting. Here, we have obtained voltage generation from a single water droplet motion on graphene. We have investigated the effect of the graphene surface condition on flow-induced voltage generation, which is controlled by heteroatom doping. Nitrogen-doped graphene shows three times higher voltage generation compared to pristine graphene due to the doping-induced surface charge of graphene. Graphene surface potential tuning by doping is shown to play an important role in voltage generation.",

author = "Takeru Okada and Golap Kalita and Masaki Tanemura and Ichiro Yamashita and M. Meyyappan and Seiji Samukawa",

note = "Funding Information: This work was supported by KAKENHI Grant Number 15K17446 and the Nanotechnology Platform Japan Program. The authors thank M. Nemoto (Technical Division of Tohoku University) for providing support for spectroscopic measurements and T. Ozaki (IFS, Tohoku University) for providing technical support for the neutral beam system.",

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AU - Okada, Takeru

AU - Kalita, Golap

AU - Tanemura, Masaki

AU - Yamashita, Ichiro

AU - Meyyappan, M.

AU - Samukawa, Seiji

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AB - Liquid-flow-induced generation of electricity using nanocarbons, particularly graphene-water interface, has received attention for energy harvesting. Here, we have obtained voltage generation from a single water droplet motion on graphene. We have investigated the effect of the graphene surface condition on flow-induced voltage generation, which is controlled by heteroatom doping. Nitrogen-doped graphene shows three times higher voltage generation compared to pristine graphene due to the doping-induced surface charge of graphene. Graphene surface potential tuning by doping is shown to play an important role in voltage generation.

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