Sustainable direct current powering a triboelectric nanogenerator via a novel asymmetrical design

2018 ◽  
Vol 11 (8) ◽  
pp. 2057-2063 ◽  
Author(s):  
Hanjun Ryu ◽  
Jeong Hwan Lee ◽  
Usman Khan ◽  
Sung Soo Kwak ◽  
Ronan Hinchet ◽  
...  
Keyword(s):  
Direct Current ◽  
Triboelectric Nanogenerator ◽  
Current Output ◽  
Phase Rotation ◽  
Triboelectric Nanogenerators ◽  
Multi Phase ◽  
Asymmetrical Design

Multi-phase rotation-type triboelectric nanogenerators generate an almost constant direct current output, which overcomes the typical limitation of triboelectric nanogenerators.

Rationally Segmented Triboelectric Nanogenerator with Constant Direct-Current Output and Low Crest Factor

2021 ◽  
Author(s):  
Pengfei Chen ◽  
Jie An ◽  
Renwei Cheng ◽  
Sheng Shu ◽  
Andy Berbille ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Direct Current ◽  
Triboelectric Nanogenerator ◽  
Crest Factor ◽  
Current Output ◽  
Practical Applications ◽  
Triboelectric Nanogenerators

Despite great potential of triboelectric nanogenerators (TENGs) as a promising energy harvesting technology, their practical applications are still hindered by their pulsed outputs with high crest factor. Here, through a...

Bulk Pt/CsPbBr3 Schottky junctions for charge boosting in robust triboelectric nanogenerators

2020 ◽  
Vol 8 (24) ◽  
pp. 11966-11975 ◽  
Author(s):  
Guixiang Xie ◽  
Xiya Yang ◽  
Jialong Duan ◽  
Yanyan Duan ◽  
Qunwei Tang
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Triboelectric Nanogenerator ◽  
Current Output ◽  
Schottky Junctions ◽  
Triboelectric Nanogenerators

Bulk Pt/CsPbBr3 Schottky junctions are built in a perovskite triboelectric nanogenerator to increase the short-circuit current output.

scholarly journals Wind driven semiconductor electricity generator with high direct current output based on a dynamic Schottky junction

RSC Advances ◽  
2021 ◽  
Vol 11 (31) ◽  
pp. 19106-19112
Author(s):  
Xutao Yu ◽  
Haonan Zheng ◽  
Yanghua Lu ◽  
Runjiang Shen ◽  
Yanfei Yan ◽  
...  
Keyword(s):  
Wind Energy ◽  
Direct Current ◽  
Schottky Junction ◽  
Current Output

In this study, a generator based on a metal/semiconductor dynamic Schottky junction has achieved ultrahigh and continuous direct current output by harvesting wind energy.

Rotating-Disk-Based Direct-Current Triboelectric Nanogenerator

2014 ◽  
Vol 4 (9) ◽  
pp. 1301798 ◽  
Author(s):  
Chi Zhang ◽  
Tao Zhou ◽  
Wei Tang ◽  
Changbao Han ◽  
Limin Zhang ◽  
...  
Keyword(s):  
Direct Current ◽  
Rotating Disk ◽  
Triboelectric Nanogenerator

Embedding in-plane aligned MOF nanoflakes in silk fibroin for highly enhanced output performance of triboelectric nanogenerator

2021 ◽  
Author(s):  
Zixi Chen ◽  
Yule Cao ◽  
Weifeng Yang ◽  
Lin An ◽  
Hongwei Fan ◽  
...  
Keyword(s):  
Composite Materials ◽  
Silk Fibroin ◽  
Triboelectric Nanogenerator ◽  
Output Performance ◽  
Triboelectric Nanogenerators

Embedding active fillers into polymers to construct composite materials is an effective way to enhance the output performance of triboelectric nanogenerators (TENGs). Among various kinds of fillers, 2D fillers showed...

Highly stable metal-organic framework UiO-66-NH2 for high-performance triboelectric nanogenerators

2021 ◽  
Author(s):  
Yong-Mei Wang ◽  
Xinxin Zhang ◽  
Dingyi Yang ◽  
Liting Wu ◽  
Jiaojiao Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Organic Framework ◽  
High Surface ◽  
High Surface Area ◽  
Triboelectric Nanogenerator ◽  
High Porosity ◽  
Chemically Modified ◽  
Metal Organic ◽  
Triboelectric Nanogenerators ◽  
Organic Framework

Abstract The high porosity, controllable size, high surface area, and chemical versatility of a metal-organic framework (MOF) enable it a good material for a triboelectric nanogenerator (TENG), and some MOFs have been incorporated in the fabrication of TENGs. However, the understanding of effects of MOFs on the energy conversion of a TENG is still lacking, which inhibits the improvement of the performance of MOF-based TENGs. Here, UiO-66-NH2 MOFs were found to significantly increase the power of a TENG and the mechanism was carefully examined. The electron-withdrawing ability of Zr-based UiO-66-family MOFs was enhanced by designing the amino functionalized 1,4-terephthalic acid (1,4-BDC) as ligand. The chemically modified UiO-66-NH2 was found to increase the surface roughness and surface potential of a composite film with MOFs embedded in polydimethylsiloxane (PDMS) matrix. Thus the total charges due to the contact electrification increased significantly. The composite-based TENG was found to be very durable and its output voltage and current were 4 times and 60 times higher than that of a PDMS-based TENG. This work revealed an effective strategy to design MOFs with excellent electron-withdrawing abilities for high-performance TENGs.

Study of the current waveform effect on the formation of cathode deposits during direct electrolysis Part 1. Electrolysis of fresh water

2021 ◽  
pp. 18-25
Author(s):  
И.В. Пчельников ◽  
Т.Т.З. Нгуен ◽  
Л.Н. Фесенко
Keyword(s):  
Fresh Water ◽  
Sodium Hypochlorite ◽  
Direct Current ◽  
Water Oxidation ◽  
Tap Water ◽  
Reverse Current ◽  
Raw Material ◽  
Half Cycle ◽  
Current Output ◽  
Direct Electrolysis

При электрохимической обработке хлоридсодержащих природных вод в бездиафрагменном электролизере образуются соли хлорноватистой кислоты, проявляющие окислительные свойства. Этот процесс широко используется для производства дезинфицирующих растворов на основе гипохлорита натрия. Сырьем для производства гипохлорита натрия могут быть не только искусственно приготовленные солевые растворы, но и природные минеральные воды, содержащие хлориды. Электролиз таких растворов приводит к образованию на катоде электролизера нерастворимых солей кальция и магния, что препятствует массообмену в межэлектродном пространстве, а также к возникновению аварийных ситуаций. В первой части статьи приведены результаты исследований прямого электролиза постоянным и реверсным током пресной воды г. Донгхой, Республика Вьетнам. В проведенных испытаниях определяли влияние реверсного тока в сравнении с постоянным током на снижение образования нерастворимых веществ на катодах электролизера. Эксперименты показали преимущество реверсного тока над постоянным. Так, при электролизе реверсным током продолжительностью периода до 6 часов масса отложений на электродах не увеличивалась, а на постоянном токе накапливалась с момента начала электролиза. Это связано с тем, что осадок, образующийся в катодный полупериод, растворяется в анодный полупериод кислотой – продуктом окисления воды. Выход хлора по току для водопроводной воды составил не более 23% с плотностью тока 100 А/м2. During the electrochemical processing of chloride-containing natural water in a membraneless electrolyzer, salts of hypochlorous acid are formed that are exhibiting oxidizing properties. This process is widely used for the production of sodium hypochlorite disinfectants. The raw material for the production of sodium hypochlorite can be not only artificially prepared saline solutions, but also natural mineral water containing chlorides. The electrolysis of such solutions results in the formation of insoluble calcium and magnesium salts at the cathode of the electrolyzer thus inhibiting mass transfer in the interelectrode space and the occurrence of emergency situations. The first part of the article presents the results of studies of direct electrolysis of fresh water with constant and reverse current in Dong Hoi city, Republic of Vietnam. In the conducted tests the effect of reverse current in comparison with direct current on the reduction of the formation of insoluble substances at the cathodes of the electrolyzer was determined. The experiments have shown the advantage of reverse current over direct current. So, during the electrolysis with reverse current for a period of up to 6 hours, the amount of deposits on the electrodes did not increase, however, with direct current the deposits accumulated from the very beginning of the electrolysis process. This is due to the fact that the precipitate formed during the cathodic half cycle is dissolved during the anodic half cycle by acid, a product of water oxidation. The current output of chlorine for tap water was no more than 23% with a current density of 100 A/m2.

Sliding Mode Direct Current Triboelectric Nanogenerators

Nano Energy ◽  
2021 ◽  
pp. 106531
Author(s):  
Wei-Zhi Song ◽  
Hui-Jing Qiu ◽  
Jun Zhang ◽  
Miao Yu ◽  
Seeram Ramakrishna ◽  
...  
Keyword(s):  
Direct Current ◽  
Sliding Mode ◽  
Triboelectric Nanogenerators

Ultra High performance, lead free Bi2WO6: P(VDF-TrFE) based triboelectric nanogenerator for self-powered sensor and smart electronic applications

2022 ◽  
Author(s):  
Dhiraj Bharti ◽  
Sushmitha Veeralingam ◽  
Sushmee Badhulika
Keyword(s):  
Output Power ◽  
Power Supply ◽  
High Performance ◽  
Lead Free ◽  
Triboelectric Nanogenerator ◽  
High Output Power ◽  
Self Powered ◽  
Triboelectric Nanogenerators ◽  
High Output

Obtaining sustainable, high output power supply from triboelectric nanogenerators still remains a major issue which restricts their widespread use in self-powered electronic applications. In this work, an ultra-high performance, non-toxic,...

Cylindrical Direct‐Current Triboelectric Nanogenerator with Constant Output Current

2020 ◽  
Vol 10 (10) ◽  
pp. 1904227 ◽  
Author(s):  
Jianlong Wang ◽  
Yikang Li ◽  
Zhijie Xie ◽  
Yuhong Xu ◽  
Jianwen Zhou ◽  
...  
Keyword(s):  
Direct Current ◽  
Triboelectric Nanogenerator ◽  
Output Current ◽  
Constant Output
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