Emerging hydrovoltaic technology

@article{Zhang2018EmergingHT,
  title={Emerging hydrovoltaic technology},
  author={Zhuhua Zhang and Xuemei Li and Jun Yin and Ying Xu and Wenwen Fei and Minmin Xue and Qin Wang and Jianxin Zhou and Wanlin Guo},
  journal={Nature Nanotechnology},
  year={2018},
  volume={13},
  pages={1109-1119}
}
Water contains tremendous energy in a variety of forms, but very little of this energy has yet been harnessed. Nanostructured materials can generate electricity on interaction with water, a phenomenon that we term the hydrovoltaic effect, which potentially extends the technical capability of water energy harvesting and enables the creation of self-powered devices. In this Review, starting by describing fundamental properties of water and of water–solid interfaces, we discuss key aspects… Expand

Figures and Topics from this paper

The Emerging of Hydrovoltaic Materials as a Future Technology: A Case Study for China
Water contains tremendous energy in various forms, but very little of this energy has yet been harvested. Nanostructured materials can generate electricity by water-nanomaterial interaction, aExpand
Moisture-Enabled Electricity Generation: From Physics and Materials to Self-Powered Applications.
TLDR
The basic mechanisms of moisture-induced electricity generation are discussed, the recent advances in materials for harvesting electrical energy from moisture are summarized, and some strategies for improving energy conversion efficiency and output power in these devices are provided. Expand
Sustainable and flexible hydrovoltaic power generator for wearable sensing electronics
Abstract Along with the development of flexible electronics, there is a pressing demand for a suitable power supply featuring great flexibility, high mobility, good stability, and sustainability.Expand
Materials for solar-powered water evaporation
Solar-powered water evaporation — the extraction of vapour from liquid water using solar energy — provides the basis for the development of eco-friendly and cost-effective freshwater production.Expand
Manipulating unidirectional fluid transportation to drive sustainable solar water extraction and brine-drenching induced energy generation
Water and energy are intimately intertwined, and it is high time to put forth integrated approaches to address the challenges and opportunities of the water–energy nexus. Herein, a novel fluidicExpand
Constant Electricity Generation in Nanostructured Silicon via Evaporation-driven Water Flow.
  • Yuanshuai Qin, Yusheng Wang, +6 authors Baoquan Sun
  • Medicine, Materials Science
  • Angewandte Chemie
  • 2020
TLDR
The findings reveal that the generated energy should be mainly correlated with Debye screening effect and Coulomb interactions, which may pave a way for developing innovative energy-harvesting devices from ubiquitous evaporation-driven internal water flow in nature with semiconductor material of silicon. Expand
Bioinspired Hierarchical Nanofabric Electrode for Silicon Hydrovoltaic Device with Record Power Output.
TLDR
A bioinspired hierarchical porous fabric electrode is reported that enables high water evaporation rate, efficient charge collection, and rapid charge transport in nanostructured silicon-based hydrovoltaic devices. Expand
Nanofluidics for osmotic energy conversion
The osmotic pressure difference between river water and seawater is a promising source of renewable energy. However, current osmotic energy conversion processes show limited power output, mainlyExpand
Self-regulating and asymmetric evaporator for efficient solar water-electricity generation
Abstract Water evaporation is a ubiquitous natural process than can be applied to generate electricity through hydrovoltaic effect. However, it remains a great challenge to construct an evaporationExpand
Droplet-based nanogenerators for energy harvesting and self-powered sensing.
  • Jianing Dong, F. Fan, Zhong-Qun Tian
  • Medicine
  • Nanoscale
  • 2021
TLDR
This review focuses on the fundamental mechanism and recent progress of droplet-based nanogenerators in the following three aspects: droplet properties, energy harvesting and self-powered sensing. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 173 REFERENCES
Water-evaporation-induced electricity with nanostructured carbon materials.
TLDR
It is found that evaporation from centimetre-sized carbon black sheets can reliably generate sustained voltages of up to 1 V under ambient conditions. Expand
Blue energy: Current technologies for sustainable power generation from water salinity gradient
“Salinity energy” stored as the salinity difference between seawater and freshwater is a large-scale renewable resource that can be harvested and converted to electricity, but extracting itExpand
Graphene based two dimensional hybrid nanogenerator for concurrently harvesting energy from sunlight and water flow
Abstract Harvesting energy from multiple sources in our living environment is highly demanded, not only to cope with the increasing energy crises, but also to realize the self-powered electronics.Expand
All-Printed Porous Carbon Film for Electricity Generation from Evaporation-Driven Water Flow
Converting environmental “waste energies” into electricity via a natural process is an ideal strategy for environmental energy harvesting and supplying power for distributed energy-consuming devices.Expand
Electric Power Generation through the Direct Interaction of Pristine Graphene-Oxide with Water Molecules.
TLDR
It is presented that electric power can be directly produced from pristine graphene oxide (GO) without any pretreatment or additives once encountering the water vapor, which will generate an open-circuit-voltage of up to 0.4-0.7 V and a short-circuits-current-density of 2-25 µA cm-2 on a single piece of GO film. Expand
Batteries for efficient energy extraction from a water salinity difference.
TLDR
The mixing entropy battery, containing a Na(2-x)Mn(5)O(10) nanorod electrode, was shown to extract energy from real seawater and river water and can be applied to a variety of salt waters and demonstrated energy extraction efficiencies of up to 74%. Expand
Potential for natural evaporation as a reliable renewable energy resource
TLDR
It is found that natural evaporation from open water surfaces could provide power densities comparable to current wind and solar technologies while cutting evaporative water losses by nearly half, and water’s large heat capacity is sufficient to control power output by storing excess energy when demand is low, thus reducing intermittency and improving reliability. Expand
How To Draw Electricity from the Bloodstream: A one-dimensional fluidic nanogenerator with a high power-conversion efficiency
TLDR
A fluidic nanogenerator fiber from an aligned carbon nanotube sheet to generate electricity from any flowing water source in the environment as well as in the human body and the power conversion efficiency reached 23.3 %. Expand
Graphene‐Piezoelectric Material Heterostructure for Harvesting Energy from Water Flow
Recently, liquid flow over monolayer graphene has been experimentally demonstrated to generate an induced voltage in the flow direction, and various physical mechanisms have been proposed to explainExpand
High-performance ionic diode membrane for salinity gradient power generation.
TLDR
A membrane-scale nanofluidic device with asymmetric structure, chemical composition, and surface charge polarity, termed ionic diode membrane (IDM), for harvesting electric power from salinity gradient and anticipates wide potentials for sustainable power generation, water purification, and desalination. Expand
...
1
2
3
4
5
...