Interface-mediated hygroelectric generator with an output voltage approaching 1.5 volts

Huang, Yaxin; Cheng, Huhu; Yang, Ce; Zhang, Panpan; Liao, Qihua; Yao, Houze; Shi, Guopu; Qu, Liangti

doi:10.1038/s41467-018-06633-z

Cited by 229 publications

(234 citation statements)

References 43 publications

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“…e,f) Reproduced under the terms of the CC-BY Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0). [37] Copyright 2018, The Authors, published by Springer Nature. stacks of graphene sheets gives an output power density of up to ≈0.42 µW cm −2 .…”

Section: Specific Surface Areamentioning

confidence: 99%

Moisture‐Enabled Electricity Generation: From Physics and Materials to Self‐Powered Applications

et al. 2020

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Ongoing efforts to develop this energy have led to the creation of a variety of novel technologies based on photovoltaic, [12,13] piezoelectric, [14,15] triboelectric, [16,17] and thermoelectric principles. [18,19] Devices based on these technologies are readily incorporated into self-powered, battery-free electronic systems. This also acts to eliminate the harm to the environment caused by the use of conventional batteries. [20,21] As recyclable resource, water is not only indispensable to life but also constitutes the largest energy carrier on Earth (Figure 1a). As 71% of the Earth's surface is covered by water and 35% of solar energy incident on the Earth is absorbed by water, petawatts of energy are received in this way. [22] As the water resource is clean and sustainable, the energy contained in even a small fraction of the water on Earth can meet the current global energy demand if this energy can be efficiently harvested. Terrestrial water exists in vapor and liquid form including moisture, rain, clouds, lakes, rivers, and oceans. It also forms the basis for biological systems. Even though there is a long history of electricity generation from running water, most technologies only utilize the gravitational and kinetic energy in liquid water. [23] Such systems are inherently incompatible with the development of self-powered devices. The development of nanomaterials has enabled technology for the extraction of electrical energy from moisture, leading to The exploration of the utilization of sustainable, green energy represents one way in which it is possible to ameliorate the growing threat of the global environmental issues and the crisis in energy. Moisture, which is ubiquitous on Earth, contains a vast reservoir of low-grade energy in the form of gaseous water molecules and water droplets. It has now been found that a number of functionalized materials can generate electricity directly from their interaction with moisture. This suggests that electrical energy can be harvested from atmospheric moisture and enables the creation of a new range of self-powered devices. Herein, the basic mechanisms of moisture-induced electricity generation are discussed, the recent advances in materials (including carbon nanoparticles, graphene materials, metal oxide nanomaterials, biofibers, and polymers) for harvesting electrical energy from moisture are summarized, and some strategies for improving energy conversion efficiency and output power in these devices are provided. The potential applications of moisture electrical generators in self-powered electronics, healthcare, security, information storage, artificial intelligence, and Internet-of-things are also discussed. Some remaining challenges are also considered, together with a number of suggestions for potential new developments of this emerging technology.

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Section: Specific Surface Areamentioning

confidence: 99%

Moisture‐Enabled Electricity Generation: From Physics and Materials to Self‐Powered Applications

et al. 2020

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“…In addition, GO with gradient oxygen‐containing groups, which can also generate electricity by absorbing water molecules, has also been used in humidity sensors . Several methods, including moisture‐electric annealing, gradient laser reduction, and gradient thermal reduction, have been developed for preparing GO with an oxygen‐containing group gradient …”

Section: Skin‐inspired Humidity Sensorsmentioning

confidence: 99%

Physical sensors for skin‐inspired electronics

Zhang

Wang

et al. 2019

InfoMat

166

138

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Skin, the largest organ in the human body, is sensitive to external stimuli.In recent years, an increasing number of skin-inspired electronics, including wearable electronics, implantable electronics, and electronic skin, have been developed because of their broad applications in healthcare and robotics.Physical sensors are one of the key building blocks of skin-inspired electronics. Typical physical sensors include mechanical sensors, temperature sensors, humidity sensors, electrophysiological sensors, and so on. In this review, we systematically review the latest advances of skin-inspired mechanical sensors, temperature sensors, and humidity sensors. The working mechanisms, key materials, device structures, and performance of various physical sensors are summarized and discussed in detail. Their applications in health monitoring, human disease diagnosis and treatment, and intelligent robots are reviewed. In addition, several novel properties of skin-inspired physical sensors such as versatility, self-healability, and implantability are introduced. Finally, the existing challenges and future perspectives of physical sensors for practical applications are discussed and proposed. K E Y W O R D Selectronics skin, flexible electronics, humidity sensors, mechanical sensors, temperature sensors, wearable sensors

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“…First of all, the strategy of partially directional thermal reduction was proposed for moist electric generator to realize an asymmetric porous graphene oxide (GO) membrane with a considerable open‐circuit voltage approaching 450 mV in ambient condition 24 . Furthermore, Huang et al 25 revealed that gradient‐reduced GO together with a thick GO layer utilized as hygroscopic materials in the moist electric generator could supply a high voltage of 1.5 V. The heterogeneous configuration that can regulate ion migration contributed to excellent performance in this device. Then, laser processing was chosen to assemble a series of shape‐deformable miniaturized graphene‐based moist electric generator with potential applications in special and strict working conditions (Figure 14).…”

Section: The Versatile Applications Of 2d Group‐iva Materialsmentioning

confidence: 99%

Two‐dimensional materials of group‐IVA boosting the development of energy storage and conversion

Guo

Chen

2020

Carbon Energy

Self Cite

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Graphene, an emerging fabric of carbon atoms, has manifested its versatility in all kinds of fields encompassing electronics, optoelectronics, thermoelectrics, taking advantage of its excellent mechanical strength, exceptional electronic and thermal conductivities, high surface specific area, and so forth. The prosperity of graphene never seen before has led the attention to silicene, siloxene, germanene, stanene, and plumbene due to their promising applications in the quantum spin Hall effect, topological insulator, batteries, capacitors, catalysis, and topological superconductivity. Herein, we review the existing production methods, numerous applications of two‐dimensional group‐IVA materials, and critically discuss the challenges of these materials, providing potential implications to the exploration of uncharted material systems.

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Interface-mediated hygroelectric generator with an output voltage approaching 1.5 volts

Cited by 229 publications

References 43 publications

Moisture‐Enabled Electricity Generation: From Physics and Materials to Self‐Powered Applications

Moisture‐Enabled Electricity Generation: From Physics and Materials to Self‐Powered Applications

Physical sensors for skin‐inspired electronics

Two‐dimensional materials of group‐IVA boosting the development of energy storage and conversion

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