Highly Efficient Moisture-Triggered Nanogenerator Based on Graphene Quantum Dots

被引：117

作者：

Huang, Yaxin ^{[1
,2
]}

Cheng, Huhu ^{[1
,2
,3
]}

Shi, Gaoquan ^{[3
]}

Qu, Liangti ^{[1
,2
,4
]}

机构：

[1] Tsinghua Univ, Minist Educ China, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R China

[2] Tsinghua Univ, State Key Lab Tribol, Dept Mech Engn, Beijing 100084, Peoples R China

[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[4] Beijing Inst Technol, Sch Chem & Chem Engn, Beijing Key Lab Photoelect Electrophoton Convers, Beijing 100081, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 44期

基金：

北京市自然科学基金;

关键词：

moisture-triggered nanogenerator; graphene quantum dots; electrochemical treatment; ion concentration gradient; moisture-electric energy transformation; ENABLED ELECTRICITY-GENERATION; POWER-GENERATION; OXIDE; GRAPHITE; SENSORS; FILMS;

D O I：

10.1021/acsami.7b12542

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 nano generator is promising for self-power electronics and miniature sensors.

引用

页码：38170 / 38175

页数：6

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