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Nanogenerators and Self-Powered Systems
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Nanogenerators and Self-Powered Systems

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (8 November 2022) | Viewed by 12120

Special Issue Editors

Dr. Liang Xu

E-Mail Website
Guest Editor
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China
Interests: nanogenerators; nanotribology
Prof. Dr. Yanchao Mao

E-Mail Website
Guest Editor
School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
Interests: ionic hydrogels; human–machine interaction sensors; stretchable sensors; bioelectronics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As an emerging technology to generate electricity from various ambient mechanical energies, nanogenerators and self-powered systems are now contributing to the solution of a series of challenges, ranging from personal medical care, wearable electronics, and internet of things to carbon neutrality. This multidisciplinary area is attracting research efforts from different research communities. Novel materials are being developed for improving the performance and environmental friendliness of the devices, such as nanoparticle-doped dielectrics, flexible and stretchable electrodes, biocompatible materials, degradable materials, etc. Devices based on these materials can thus gain versatile features to accommodate different application scenarios. Studies on fundamental mechanical and electric phenomena occurring on the surface and interface provide crucial guidance for the development of new materials and devices.

This Special Issue aims to cover the most recent advances in this field, including materials, fabrication, devices, characterization, and modeling. Related fundamental research is also welcome.

Dr. Liang Xu
Prof. Dr. Yanchao Mao
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • triboelectric nanogenerator
  • piezoelectric nanogenerator
  • self-powered system
  • energy harvesting
  • triboelectrification
  • nanotribology
  • nanomaterial

Published Papers (5 papers)

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Research

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11 pages, 4958 KiB  
Article
Omnidirectional Triboelectric Nanogenerator for Wide-Speed-Range Wind Energy Harvesting
by Qiman Wang, Wenhao Li, Kun Wang, Yitao Liao, Junjie Zheng, Xiongtu Zhou, Jianpu Lin, Yongai Zhang and Chaoxing Wu
Nanomaterials 2022, 12(22), 4046; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12224046 - 17 Nov 2022
Cited by 1 | Viewed by 1653
Abstract
The environmentally friendly harvesting of wind energy is an effective technique for achieving carbon neutrality and a green economy. In this work, a core–shell triboelectric nanogenerator (CS-TENG) for harvesting wind energy is demonstrated and the device structure parameters are optimized. The core–shell structure [...] Read more.
The environmentally friendly harvesting of wind energy is an effective technique for achieving carbon neutrality and a green economy. In this work, a core–shell triboelectric nanogenerator (CS-TENG) for harvesting wind energy is demonstrated and the device structure parameters are optimized. The core–shell structure enables the CS-TENG to respond sensitively to wind from any direction and generate electrical output on the basis of the vertical contact–separation mode. A single device can generate a maximum power density of 0.14 W/m3 and can power 124 light-emitting diodes. In addition, wind energy can be harvested even at a wind speed as low as 2.3 m/s by paralleling CS-TENGs of different sizes. Finally, a self-powered water quality testing system that uses the CS-TENG as its power supply is built. The CS-TENG exhibits the advantages of a simple structure, environmentally friendly materials, low cost, and simple fabrication process. These features are of considerable significance for the development of green energy harvesting devices. Full article
(This article belongs to the Special Issue Nanogenerators and Self-Powered Systems)
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12 pages, 3656 KiB  
Article
A Robust Silicone Rubber Strip-Based Triboelectric Nanogenerator for Vibration Energy Harvesting and Multi-Functional Self-Powered Sensing
by Taili Du, Bin Ge, Anaeli Elibariki Mtui, Cong Zhao, Fangyang Dong, Yongjiu Zou, Hao Wang, Peiting Sun and Minyi Xu
Nanomaterials 2022, 12(8), 1248; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12081248 - 07 Apr 2022
Cited by 20 | Viewed by 2252
Abstract
Vibration is a common phenomenon in various fields which can not only indicate the working condition of the installation, but also serve as an energy source if it is efficiently harvested. In this work, a robust silicone rubber strip-based triboelectric nanogenerator (SRS-TENG) for [...] Read more.
Vibration is a common phenomenon in various fields which can not only indicate the working condition of the installation, but also serve as an energy source if it is efficiently harvested. In this work, a robust silicone rubber strip-based triboelectric nanogenerator (SRS-TENG) for vibration energy harvesting and multi-functional self-powered sensing is proposed and systematically investigated. The SRS-TENG consists of a silicone rubber strip and two aluminum electrode layers supported by polylactic acid (PLA), and acts as a sustainable power source and vibration frequency, amplitude and acceleration sensor as well. The soft contact between the aluminum electrode and silicone rubber strip makes it robust and stable even after 14 days. It can be applied in ranges of vibration frequencies from 5 to 90 Hz, and amplitudes from 0.5 to 9 mm, which shows it has advantages in broadband vibration. Additionally, it can achieve lower startup limits due to its soft structure and being able to work in multi-mode. The output power density of the SRS-TENG can reach 94.95 W/m3, matching a resistance of 250 MΩ, and it can light up more than 100 LEDs and power a commercial temperature sensor after charging capacitors. In addition, the vibration amplitude can be successfully detected and displayed on a human–machine interface. Moreover, the frequency beyond a specific limit can be distinguished by the SRS-TENG as well. Therefore, the SRS-TENG can be utilized as an in situ power source for distributed sensor nodes and a multifunctional self-powered vibration sensor in many scenarios. Full article
(This article belongs to the Special Issue Nanogenerators and Self-Powered Systems)
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12 pages, 3516 KiB  
Article
A Stackable Triboelectric Nanogenerator for Wave-Driven Marine Buoys
by Hao Wang, Chuanqing Zhu, Weichen Wang, Ruijiang Xu, Pengfei Chen, Taili Du, Tingxi Xue, Zhaoyang Wang and Minyi Xu
Nanomaterials 2022, 12(4), 594; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12040594 - 10 Feb 2022
Cited by 18 | Viewed by 2507
Abstract
Marine distributed devices are essential infrastructure for exploring and utilizing the ocean. As the most common carrier of these devices, floating and submerged buoys are subject to a bottleneck of power supply. Recent progress in nanogenerators could convert the high-entropy marine kinetic energy [...] Read more.
Marine distributed devices are essential infrastructure for exploring and utilizing the ocean. As the most common carrier of these devices, floating and submerged buoys are subject to a bottleneck of power supply. Recent progress in nanogenerators could convert the high-entropy marine kinetic energy (e.g., wave) robustly, which may form an in-situ power solution to marine distributed devices. This study is devoted to develop a stackable triboelectric nanogenerator (S-TENG), while each layer of it is made into multiple channels carrying PTFE balls in between Aluminum electrodes. In the experiments based on forced motion, the peak power density of the S-TENG reaches 49 W/m3, about 29% promotion from our previous benchmark. The S-TENG has also become less vulnerable to directional variation of the excitation, making its integration on various platforms more flexible in real conditions. In practice, the S-TENG has demonstrated its capability of powering LEDs as well as various sensors measuring salinity, temperature and acidity, which means the S-TENG could self-power many compact marine buoys. Full article
(This article belongs to the Special Issue Nanogenerators and Self-Powered Systems)
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Review

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27 pages, 5370 KiB  
Review
Recent Progress in Piezoelectric-Triboelectric Effects Coupled Nanogenerators
by Yifei Wang, Xia Cao and Ning Wang
Nanomaterials 2023, 13(3), 385; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13030385 - 18 Jan 2023
Cited by 12 | Viewed by 2403
Abstract
Piezoelectric and triboelectric nanogenerators have been widely studied in the past years for their advantages of easy design/manufacturing, small size, and flexibility. Nanogenerators that are developed based on the coupled piezoelectric and triboelectric effects (PTCNG) can make full use of the mechanical energies [...] Read more.
Piezoelectric and triboelectric nanogenerators have been widely studied in the past years for their advantages of easy design/manufacturing, small size, and flexibility. Nanogenerators that are developed based on the coupled piezoelectric and triboelectric effects (PTCNG) can make full use of the mechanical energies and achieve both higher output and sensing performance. This review aims to cover the recent research progress of PTCNG by presenting in detail their key technologies in terms of operating principles, integration concept, and performance enhancement strategies, with a focus on their structural simplification and efficiency performance improvement. The latest applications of PTCNG in tactile sensors and energy-harvesting system are also illustrated. Finally, we discuss the main challenges and prospects for the future development of PTCNG, hoping that this work can provide a new insight into the development of all-in-one mechanical energy-scavenging and sensing devices. Full article
(This article belongs to the Special Issue Nanogenerators and Self-Powered Systems)
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58 pages, 12286 KiB  
Review
Recent Progress on Photoelectrochemical Water Splitting of Graphitic Carbon Nitride (g−CN) Electrodes
by Ying Zhu, Liang He, Yiqiang Ni, Genzhuang Li, Dongshuai Li, Wang Lin, Qiliang Wang, Liuan Li and Haibin Yang
Nanomaterials 2022, 12(14), 2374; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12142374 - 11 Jul 2022
Cited by 2 | Viewed by 2575
Abstract
Graphitic carbon nitride (g−CN), a promising visible-light-responsive semiconductor material, is regarded as a fascinating photocatalyst and heterogeneous catalyst for various reactions due to its non-toxicity, high thermal durability and chemical durability, and “earth-abundant” nature. However, practical applications of g−CN in photoelectrochemical (PEC) and [...] Read more.
Graphitic carbon nitride (g−CN), a promising visible-light-responsive semiconductor material, is regarded as a fascinating photocatalyst and heterogeneous catalyst for various reactions due to its non-toxicity, high thermal durability and chemical durability, and “earth-abundant” nature. However, practical applications of g−CN in photoelectrochemical (PEC) and photoelectronic devices are still in the early stages of development due to the difficulties in fabricating high-quality g−CN layers on substrates, wide band gaps, high charge-recombination rates, and low electronic conductivity. Various fabrication and modification strategies of g−CN-based films have been reported. This review summarizes the latest progress related to the growth and modification of high-quality g−CN-based films. Furthermore, (1) the classification of synthetic pathways for the preparation of g−CN films, (2) functionalization of g−CN films at an atomic level (elemental doping) and molecular level (copolymerization), (3) modification of g−CN films with a co-catalyst, and (4) composite films fabricating, will be discussed in detail. Last but not least, this review will conclude with a summary and some invigorating viewpoints on the key challenges and future developments. Full article
(This article belongs to the Special Issue Nanogenerators and Self-Powered Systems)
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