Highly Efficient Moisture-Triggered Nanogenerator Based on Graphene Quantum Dots

Yaxin Huang; Huhu Cheng; Gaoquan Shi; Liangti Qu

doi:10.1021/acsami.7b12542

Highly Efficient Moisture-Triggered Nanogenerator Based on Graphene Quantum Dots

Yaxin Huang, Huhu Cheng, Gaoquan Shi, Liangti Qu^*

^*Corresponding author for this work

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

123 Citations (Scopus)

Abstract

A high-performance moisture triggered nanogenerator is fabricated by using graphene quantum dots (GQDs) as the active material. GQDs are prepared by direct oxidation and etching of natural graphite powder, which have small sizes of 2-5 nm and abundant oxygen-containing functional groups. After the treatment by electrochemical polarization, the GQDs-based moisture triggered nanogenerator can deliver a high voltage up to 0.27 V under 70% relative humidity variation, and a power density of 1.86 mW cm^-2 with an optimized load resistor. The latter value is much higher than the moisture-electric power generators reported previously. The GQD moisture triggered nanogenerator is promising for self-power electronics and miniature sensors.

Original language	English
Pages (from-to)	38170-38175
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	44
DOIs	https://doi.org/10.1021/acsami.7b12542
Publication status	Published - 8 Nov 2017
Externally published	Yes

Keywords

electrochemical treatment
graphene quantum dots
ion concentration gradient
moisture-electric energy transformation
moisture-triggered nanogenerator

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10.1021/acsami.7b12542

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title = "Highly Efficient Moisture-Triggered Nanogenerator Based on Graphene Quantum Dots",

abstract = "A high-performance moisture triggered nanogenerator is fabricated by using graphene quantum dots (GQDs) as the active material. GQDs are prepared by direct oxidation and etching of natural graphite powder, which have small sizes of 2-5 nm and abundant oxygen-containing functional groups. After the treatment by electrochemical polarization, the GQDs-based moisture triggered nanogenerator can deliver a high voltage up to 0.27 V under 70\% relative humidity variation, and a power density of 1.86 mW cm-2 with an optimized load resistor. The latter value is much higher than the moisture-electric power generators reported previously. The GQD moisture triggered nanogenerator is promising for self-power electronics and miniature sensors.",

keywords = "electrochemical treatment, graphene quantum dots, ion concentration gradient, moisture-electric energy transformation, moisture-triggered nanogenerator",

author = "Yaxin Huang and Huhu Cheng and Gaoquan Shi and Liangti Qu",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

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doi = "10.1021/acsami.7b12542",

language = "English",

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journal = "ACS Applied Materials and Interfaces",

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T1 - Highly Efficient Moisture-Triggered Nanogenerator Based on Graphene Quantum Dots

AU - Huang, Yaxin

AU - Cheng, Huhu

AU - Shi, Gaoquan

AU - Qu, Liangti

PY - 2017/11/8

Y1 - 2017/11/8

N2 - A high-performance moisture triggered nanogenerator is fabricated by using graphene quantum dots (GQDs) as the active material. GQDs are prepared by direct oxidation and etching of natural graphite powder, which have small sizes of 2-5 nm and abundant oxygen-containing functional groups. After the treatment by electrochemical polarization, the GQDs-based moisture triggered nanogenerator can deliver a high voltage up to 0.27 V under 70% relative humidity variation, and a power density of 1.86 mW cm-2 with an optimized load resistor. The latter value is much higher than the moisture-electric power generators reported previously. The GQD moisture triggered nanogenerator is promising for self-power electronics and miniature sensors.

AB - A high-performance moisture triggered nanogenerator is fabricated by using graphene quantum dots (GQDs) as the active material. GQDs are prepared by direct oxidation and etching of natural graphite powder, which have small sizes of 2-5 nm and abundant oxygen-containing functional groups. After the treatment by electrochemical polarization, the GQDs-based moisture triggered nanogenerator can deliver a high voltage up to 0.27 V under 70% relative humidity variation, and a power density of 1.86 mW cm-2 with an optimized load resistor. The latter value is much higher than the moisture-electric power generators reported previously. The GQD moisture triggered nanogenerator is promising for self-power electronics and miniature sensors.

KW - electrochemical treatment

KW - graphene quantum dots

KW - ion concentration gradient

KW - moisture-electric energy transformation

KW - moisture-triggered nanogenerator

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DO - 10.1021/acsami.7b12542

M3 - Article

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AN - SCOPUS:85033471610

SN - 1944-8244

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JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 44

ER -

Highly Efficient Moisture-Triggered Nanogenerator Based on Graphene Quantum Dots

Abstract

Keywords

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