scholarly journals A Self-Powered Flexible Thermoelectric Sensor and Its Application on the Basis of the Hollow PEDOT:PSS Fiber

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 553 ◽  
Author(s):  
Limin Ruan ◽  
Yanjie Zhao ◽  
Zihao Chen ◽  
Wei Zeng ◽  
Siliang Wang ◽  
...  
Keyword(s):  
Low Cost ◽  
Hollow Structure ◽  
Environmental Stability ◽  
Good Reliability ◽  
Long Term Stability ◽  
Thermoelectric Sensor ◽  
Self Powered ◽  
Flexible Thermoelectric ◽  
Peak Value

The thermoelectric (TE) fiber, based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), which possesses good flexibility, a low cost, good environmental stability and non-toxicity, has attracted more attention due to its promising applications in energy harvesting. This study presents a self-powered flexible sensor based on the TE properties of the hollow PEDOT:PSS fiber. The hollow structure of the fiber was synthesized using traditional wet spinning. The sensor was applied to an application for finger touch, and showed both long-term stability and good reliability towards external force. The sensor had a high scalability and was simple to develop. When figures touched the sensors, a temperature difference of 6 °C was formed between the figure and the outside environment. The summit output voltages of the sensors with 1 to 5 legs gradually increased from 90.8 μV to 404 μV. The time needed for the output voltage to reach 90% of its peak value is only 2.7 s. Five sensors of legs ranging from 1 to 5 were used to assemble the selector. This study may provide a new proposal to produce a self-powered, long-term and stable skin sensor, which is suitable for wearable devices in personal electronic fields.

scholarly journals Wittichenite semiconductor of Cu3BiS3 films for efficient hydrogen evolution from solar driven photoelectrochemical water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dingwang Huang ◽  
Lintao Li ◽  
Kang Wang ◽  
Yan Li ◽  
Kuang Feng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Low Cost ◽  
Solar Hydrogen ◽  
Onset Potential ◽  
Term Stability ◽  
Long Term Stability ◽  
Solar Water Splitting ◽  
Current Densities

AbstractA highly efficient, low-cost and environmentally friendly photocathode with long-term stability is the goal of practical solar hydrogen evolution applications. Here, we found that the Cu3BiS3 film-based photocathode meets the abovementioned requirements. The Cu3BiS3-based photocathode presents a remarkable onset potential over 0.9 VRHE with excellent photoelectrochemical current densities (~7 mA/cm2 under 0 VRHE) and appreciable 10-hour long-term stability in neutral water solutions. This high onset potential of the Cu3BiS3-based photocathode directly results in a good unbiased operating photocurrent of ~1.6 mA/cm2 assisted by the BiVO4 photoanode. A tandem device of Cu3BiS3-BiVO4 with an unbiased solar-to-hydrogen conversion efficiency of 2.04% is presented. This tandem device also presents high stability over 20 hours. Ultimately, a 5 × 5 cm2 large Cu3BiS3-BiVO4 tandem device module is fabricated for standalone overall solar water splitting with a long-term stability of 60 hours.

The Research about La0.8Sr0.2CoO3 Application as Dense Diffusion Barrier in Limiting Current Oxygen Sensors

2013 ◽  
Vol 703 ◽  
pp. 111-114
Author(s):  
Yin Lin Wu ◽  
Hai Yan Zhao ◽  
Fu Shen Li
Keyword(s):  
Diffusion Barrier ◽  
Solid Electrolytes ◽  
Oxygen Sensor ◽  
Low Cost ◽  
Limiting Current ◽  
Stabilized Zirconia ◽  
Long Term Stability ◽  
Oxygen Ion ◽  
Ion Conducting

The fabrication and operation of a new thick film type of limiting current oxygen sensor is demonstrated that utilizes yttria (8% mol) stabilized zirconia (YSZ) as oxygen ion conducting solid electrolytes and dense La0.8Sr0.2CoO3(LSC) as diffusion barrier. The oxygen sensor shows a near linear response between 0 to 10.5% O2in argon at 1023K. The advantages of the sensor are simple construction, low cost and potential long term stability.

Limiting Current Oxygen Sensors with LSM as Dense Diffusion Barrier

2008 ◽  
Vol 368-372 ◽  
pp. 263-264
Author(s):  
Yin Lin Wu ◽  
Ling Wang ◽  
Fu Shen Li ◽  
Yan Qin Zhao
Keyword(s):  
Diffusion Barrier ◽  
Solid Electrolytes ◽  
Oxygen Sensor ◽  
Low Cost ◽  
Limiting Current ◽  
Excellent Performance ◽  
Long Term Stability ◽  
Oxygen Ion ◽  
Ion Conducting

A thick film type of limiting current oxygen sensor which uses yttria (8% mol) stabilized zirconia (YSZ) as oxygen ion conducting solid electrolytes and dense La0.8Sr0.2MnO3 (LSM) as diffusion barrier was developed successfully. The oxygen sensor showed excellent performance at oxygen concentrations ranging from 0 to 10 ppm. The advantages of the sensor are simple construction, low cost and potential long term stability.

Multifunctional VI–VI binary heterostructure-based self-powered pH-sensitive photo-detector

2020 ◽  
Vol 8 (18) ◽  
pp. 5991-6000 ◽  
Author(s):  
Ye Zhang ◽  
Yiguo Xu ◽  
Chen Zhang ◽  
Jia Guo ◽  
Zhe Shi ◽  
...  
Keyword(s):  
Ph Sensitive ◽  
Ph Sensitivity ◽  
Term Stability ◽  
Ph Response ◽  
Long Term Stability ◽  
Wide Ph Range ◽  
Self Powered ◽  
Ph Range ◽  
Fast Dynamic

2D Te@Se heterostructure is constructed for PEC-type photodetector. Te@Se-based photodetector exhibits pH-sensitivity in a wide pH range from 1 to 14 with many advantages like self-power, fast dynamic pH response, and long-term stability.

Polyaniline/nano-in2O3 Composites Used as a Sensitive Material to NH3

2011 ◽  
Vol 239-242 ◽  
pp. 322-327 ◽  
Author(s):  
Ying Nan Xie ◽  
Zheng Hai Shi ◽  
Jian Lian Liu
Keyword(s):  
In Situ Polymerization ◽  
Average Diameter ◽  
Environmental Stability ◽  
Sensitive Material ◽  
Long Term Stability ◽  
Degree Of Crystallization ◽  
High Degree ◽  
Sulphosalicylic Acid

In presence of nano-In2O3 which were synthesised via a reverse microemulsion, Polyaniline/nano-In2O3 composites were prepared by in-situ polymerization of aniline in 5-sulphosalicylic acid(SSA) aqueous solution. They were characterized by means of TEM, XRD and FTIR.. TEM and XRD showed that the average diameter of In2O3 particles was 15nm with a narrow size distribution and with a high degree of crystallization. The FTIR suggested that the structure of PAn-SSA was not be changed by the mixture of In2O3. Sensitivity of the composites to 100~1000ppm NH3 were studied, the results reveal that polyaniline/nano-In2O3 composites have short response time and good reversibility, the gas sensitive of composites to NH3 under 300ppm increased linearly with the increasing concentration of NH3 and decreased with the increasing of In2O3 concentration. Long-term stability of polyaniline/nano-In2O3 composites were also investagated, it can be concluded that the organic-inorganic hybrid materials have better environmental stability.

scholarly journals Fabrication of Superhydrophobic Magnetic Sawdust as Effective and Recyclable Oil Sorbents

Materials ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3432
Author(s):  
Shumin Fan ◽  
Shuai Pei ◽  
Tianyu Shen ◽  
Guangri Xu ◽  
Yuanchao Li ◽  
...  
Keyword(s):  
Low Cost ◽  
Absorption Capacity ◽  
Magnetic Characteristics ◽  
Formaldehyde Resin ◽  
Water Contact ◽  
Long Term Stability ◽  
Oil Sorbent ◽  
Oil In Water ◽  
Oil Absorbent

In this paper, a novel superhydrophobic magnetic sawdust (SMSD) was fabricated as an oil sorbent. The SMSD was functionalized with Fe3O4 nanoparticles using melamine formaldehyde resin (MFR) as a coupling agent and subsequently hydrophobically-treated with hexadecyltrimethoxysilane (HDTMS). The SMSD showed excellent superhydrophobicity with the water contact angle of 155.3 ± 0.9°. Meanwhile it had remarkable environmental durability, long-term stability, and mechanical durable properties. Taking advantage of its magnetic characteristics, the SMSD could be easily controlled to absorb oil to separate oil–water mixtures with high oil absorption capacity and good reusability. Moreover, the emulsion was successfully separated by SMSD, including water-in-oil and oil-in-water emulsions. This study developed an effective oil absorbent, which was low cost and environmentally-friendly.

scholarly journals A Novel, Nontoxic and Scalable Process to Produce Lipidic Vehicles

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5035
Author(s):  
Nikolaos Naziris ◽  
Natassa Pippa ◽  
Costas Demetzos
Keyword(s):  
Self Assembly ◽  
Room Temperature ◽  
Low Cost ◽  
Scale Up ◽  
Bioactive Molecules ◽  
Second Step ◽  
Long Term Stability ◽  
Prior Art ◽  
Good Homogeneity

Lipidic vehicles are novel industrial products, utilized as components for pharmaceutical, cosmeceutical and nutraceutical formulations. The present study concerns a newly invented method to produce lipidic vehicles in the nanoscale that is simple, nontoxic, versatile, time-efficient, low-cost and easy to scale up. The process is a modification of the heating method (MHM) and comprises (i) providing a mixture of an amphiphilic lipid and a charged lipid and/or a fluidity regulator in a liquid medium composed of water and a liquid polyol, (ii) stirring and heating the mixture in two heating steps, wherein the temperature of the second step is higher than the temperature of the first step and (iii) allowing the mixture to cool down to room temperature. The process leads to the self-assembly of nanoparticles of small size and good homogeneity, compared with conventional approaches that require additional size reduction steps. In addition, the incorporation of bioactive molecules, such as drugs, inside the nanoparticles is possible, while lyophilization of the products provides long-term stability. Most importantly, the absence of toxic solvents and the simplicity guarantee the safety and scalability of the process, distinguishing it from most prior art processes to produce lipidic vehicles.

scholarly journals Triple-Mesoscopic Carbon Perovskite Solar Cells: Materials, Processing and Applications

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 386
Author(s):  
Simone M. P. Meroni ◽  
Carys Worsley ◽  
Dimitrios Raptis ◽  
Trystan M. Watson
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Future Research ◽  
Large Area ◽  
Long Term Stability ◽  
Comparable Performance ◽  
Indoor And Outdoor

Perovskite solar cells (PSCs) have already achieved comparable performance to industrially established silicon technologies. However, high performance and stability must be also be achieved at large area and low cost to be truly commercially viable. The fully printable triple-mesoscopic carbon perovskite solar cell (mCPSC) has demonstrated unprecedented stability and can be produced at low capital cost with inexpensive materials. These devices are inherently scalable, and large-area modules have already been fabricated using low-cost screen printing. As a uniquely stable, scalable and low-cost architecture, mCPSC research has advanced significantly in recent years. This review provides a detailed overview of advancements in the materials and processing of each individual stack layer as well as in-depth coverage of work on perovskite formulations, with the view of highlighting potential areas for future research. Long term stability studies will also be discussed, to emphasise the impressive achievements of mCPSCs for both indoor and outdoor applications.

scholarly journals Salt-Resistive Photothermal Materials and Microstructures for Interfacial Solar Desalination

2021 ◽  
Vol 9 ◽  
Author(s):  
Xiaoqiang Yu ◽  
Qian Zhang ◽  
Xin Liu ◽  
Ning Xu ◽  
Lin Zhou
Keyword(s):  
Energy Transfer ◽  
High Efficiency ◽  
Low Cost ◽  
High Energy ◽  
Current Status ◽  
Long Term Stability ◽  
Solar Desalination ◽  
Point Of Use ◽  
Art Research

Solar interfacial evaporation, featured by high energy transfer efficiency, low cost, and environmental compatibility, has been widely regarded as a promising technology for solar desalination. However, the interplay between energy transfer and water transport in the same channels suggests that the tradeoff between high efficiency and long-term stability inherently exists in conventional photothermal nanomaterials. We summarize state-of-the-art research on various anti-salt clogging photothermal microstructures as long-term stable interfacial solar evaporators for solar desalination. The review starts with an overview of the current status and the fundamental limit of photothermal materials for solar desalination. Four representative strategies are analyzed in detail with the most recent experimental demonstrations, including fluid convection enhancement, surface wettability engineering, energy-mass-path decoupling, and surface chemistry engineering. Finally, this article focuses on the challenges in anti-salt clogging solar interfacial evaporators and potential point-of-use applications in the future.

scholarly journals Semiconductor Photocatalyst of Tin Oxide Quantum Dots Prepared in Aqueous Solution for Degradation of Organic Pollutants in Contaminated Water

2021 ◽  
Author(s):  
Jianqiao LIU ◽  
Ye HONG ◽  
Xinyue TIAN ◽  
Xiangxu MENG ◽  
Ge GAO ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
High Efficiency ◽  
Low Cost ◽  
Contaminated Water ◽  
Long Term Stability ◽  
High Concentrations ◽  
Average Size ◽  
Source Materials

Stannous chloride and thiourea are used as source materials to prepare SnO2 quantum dots in the aqueous solution by a facile hydrolysis-oxidation process. The quantum dots have an average size of 1.9 nm with good dispersibility as well as long-term stability, and are validated to be an effective photocatalyst for the degradation of organic oil pollutants in contaminated water. The pollutant is removed by the quantum dots exposed to ultraviolet-visible irradiation at room temperature. The optimized condition is concluded to be a solution with quantum dot concentration of 10-3 mol/L and the degradation speed reaches the maximum at the 12 th hour after irradiation. After 48 hours, 91.9 % of octane is removed, concluding a high degradation efficiency. The prepared SnO2 quantum dots are potentially applicable in the remediation of marine environment as they hold the advantages of high efficiency, low cost and being environmental-friendly. The promotion and inhibition mechanisms of the photocatalytic SnO2 QDs at low and high concentrations are discussed.

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