Metal-free and non-fluorine paper-based generator

Hu, Qiyi; Wang, Bo; Zhong, Qize; Zhong, Junwen; Hu, Bin; Zhang, Xiaoqing; Zhou, Jun

doi:10.1016/j.nanoen.2014.09.036

Cited by 39 publications

(29 citation statements)

References 32 publications

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“…Ample research has been performed in the last few years regarding piezoelectric nanogenerators (PENG) and triboelectric nanogenerators (TENG) to effectively convert biomechanical and ambient mechanical energy into useful electricity . A few stretchable TENGs were reported, but their large form factor and the mechanical movements of layers make their use difficult in small‐scale wearable systems .…”

Section: Introductionmentioning

confidence: 99%

An Omnidirectionally Stretchable Piezoelectric Nanogenerator Based on Hybrid Nanofibers and Carbon Electrodes for Multimodal Straining and Human Kinematics Energy Harvesting

Siddiqui

Lee

Kim

et al. 2017

Advanced Energy Materials

118

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Stretchable piezoelectric nanogenerators (SPENGs) for human kinematics energy harvesting have limited use due to the low stretchability or mechanical robustness and the difficulty of structural design for omnidirectional stretchability. This study reports an efficient, omnidirectionally stretchable, and robust SPENG based on a stretchable graphite electrode on a 3D micropatterned stretchable substrate and a stacked mat of piezoelectric nanofibers. The stacked mat of free‐standing nanofibers is alternatively composed of nanocomposite nanofibers of barium titanate nanoparticles embedded in polyurethane and poly(vinylidene fluoride‐trifluoroethylene) nanofibers. The nanofiber SPENG (nf‐SPENG) exhibits a high stretchability of 40% and high mechanical durability up to 9000 stretching cycles at 30% strain, which are attributed to the stress‐relieving nature of the 3D micropattern on the substrate and the free‐standing stacked hybrid nanofibers. The nf‐SPENG produces a peak open circuit voltage (Voc) and short circuit current (Isc) of 9.3 V and 189 nA, respectively. The nf‐SPENG is demonstrated to harvest the energy from human kinematics while walking when placed over the knee cap of a subject, generating a maximum Voc of 10.1 V. The omnidirectional stretchability, efficiency, facile fabrication process, mechanical durability, environmentally friendly lead‐free components, and response to multimodal straining make this device suitable for self‐powered wearable sensing systems.

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Section: Introductionmentioning

confidence: 99%

An Omnidirectionally Stretchable Piezoelectric Nanogenerator Based on Hybrid Nanofibers and Carbon Electrodes for Multimodal Straining and Human Kinematics Energy Harvesting

Siddiqui

Lee

Kim

et al. 2017

Advanced Energy Materials

118

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“…Usually, energy harvesting and storage devices are connected together by a power management circuit to enable sustainable power supply [12][13][14][15][16][17][18][19][20][21] . Piezoelectric materials can convert ubiquitously irregular and low-frequency mechanical vibration into electricity and have been extensively studied for the use of nanogenerator [22][23][24][25][26][27][28][29][30] . Owing to the excellent piezoelectricity and mechanical flexibility, polyvinylidene fluoride (PVDF) film has been shown for the wearable and flexible energy generator [15][16][17]19,20,22,[31][32][33][34][35] .…”

Section: Introductionmentioning

confidence: 99%

A rectification-free piezo-supercapacitor with a polyvinylidene fluoride separator and functionalized carbon cloth electrodes

et al. 2015

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The integration of energy harvesting and energy storage device not only enables to convert ambient energy into electricity but also provides sustainable power source for various electronic devices and systems. It is highly desirable to improve the integration level and minimize unnecessary energy loss in the power-management circuits between energy harvesting and storage devices. In our work, we integrate a PVDF film into a supercapacitor as both the separator and the energy harvester. The double-sides of the polarized PVDF films are coated with H 2 SO 4 /poly(vinyl alcohol) (PVA) gel electrolyte. Functionalized carbon cloths are assembled with H 2 SO 4 /PVA electrolyte as both anode and cathode, forming a flexible all-solid-state supercapacitor. Externally mechanical impacts establish a piezoelectric potential across the PVDF films, and drive ions in the electrolyte to migrate towards the interface of the supercapacitor electrode, storing the electricity in the form of electrochemical energy. The asymmetric output characteristic of the piezoelectric PVDF film under mechanical impact results in the effective charging of the supercapacitor without any rectification device. The integrated piezo-supercapacitor shows the specific capacitance of 357.6 F/m 2 , the power density of 49.67 mWh/m 2 , and the energy density of 400 mW/m 2 . Our hybridized energy harvesting and storage device can be further extended for providing sustainable power source of various types of sensors.

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“…Therefore, several attempts have been made in innovating paper-based electronics for energy storage and conversion applications, such as Li-ion batteries, 2 selfpowered super-capacitors, 3,4 solar cells, 5,6 and nanogenerators. 7,8 Mechanical energy, which can be produced from human motions, sounds, and structure vibrations are probably the most common renewable energy sources in our living environment.…”

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confidence: 99%

Paper-Based Origami Triboelectric Nanogenerators and Self-Powered Pressure Sensors

et al. 2015

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Discovering renewable and sustainable power sources is indispensable for the development of green electronics and sensor networks. In this paper, we present origami triboelectric nanogenerators (TENGs) using paper as the starting material, with a high degree of flexibility, light weight, low cost, and recyclability. Slinky- and doodlebug-shaped TENGs can be easily fabricated by properly folding printer papers. The as-fabricated TENGs are capable of harvesting ambient mechanical energy from various kinds of human motions, such as stretching, lifting, and twisting. The generated electric outputs have been used to directly light-up commercial LEDs. In addition, the as-fabricated TENGs can also serve as self-powered pressure sensors.

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Metal-free and non-fluorine paper-based generator

Cited by 39 publications

References 32 publications

An Omnidirectionally Stretchable Piezoelectric Nanogenerator Based on Hybrid Nanofibers and Carbon Electrodes for Multimodal Straining and Human Kinematics Energy Harvesting

An Omnidirectionally Stretchable Piezoelectric Nanogenerator Based on Hybrid Nanofibers and Carbon Electrodes for Multimodal Straining and Human Kinematics Energy Harvesting

A rectification-free piezo-supercapacitor with a polyvinylidene fluoride separator and functionalized carbon cloth electrodes

Paper-Based Origami Triboelectric Nanogenerators and Self-Powered Pressure Sensors

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