Implications of “Eutectic Theory” for the Practical Teaching of Innovative Talents Training—Take Department of New Energy Materials and Devices as an Example

The aim of this study was to investigate the electrical resistance of polycarbonate film and polyester film materials in new energy materials during electrothermal aging in transformer oil. Insulating paper was used as a comparative material to compare the breakdown voltage and initial voltage of insulating paper, polycarbonate film, and polyester film in electrothermal aging at 90 °C, 110 °C, and 130 °C. The best performance in the test was achieved by polycarbonate film, followed by polyester film, while the worst performance was that of insulating paper. Polycarbonate film can be used as an insulating material in transformers, and it has great application value and commercial prospects.

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The Analysis of the Characteristic Development of Material Chemistry Specialty under the Background of "Big Materials"

Advances in Higher Education ◽

10.18686/ahe.v3i3.1494 ◽

2019 ◽

Vol 3 (3) ◽

pp. 172

Author(s):

Zegong Zhang

Keyword(s):

Material Science ◽

Rapid Development ◽

Functional Materials ◽

New Materials ◽

Energy Materials ◽

Chemistry Major ◽

Material Chemistry ◽

Nanometer Materials ◽

New Energy ◽

Teaching Purpose

<p>With the rapid development of science and technology, the material discipline also developed rapidly, and gradually developed a lot of new materials. With the emergence of new materials, there are many specialties such as nanometer materials and technology, functional materials, new energy materials and devices. The material chemistry major is a kind of material and chemistry cross traditional major. The teaching purpose of material chemistry major is to improve students' knowledge and skills in material chemistry, so that they can carry out scientific research, teaching, development and other management work in engineering, material science and other related industries, and become an innovative talent in the field of material science. At present, in the environment of rapid development of large materials, the most prominent problem of material chemistry major is how to highlight the specialty characteristics as much as possible in this environment, so as to realize the construction and development of specialty characteristics.</p>

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CO2 methanation over Co–Ni catalysts

E3S Web of Conferences ◽

10.1051/e3sconf/202015402001 ◽

2020 ◽

Vol 154 ◽

pp. 02001

Author(s):

Olena V. Ishchenko ◽

Alla G. Dyachenko ◽

Andrii V. Yatsymyrskiy ◽

Tetiana M. Zakharova ◽

Snizhana V. Gaidai ◽

...

Keyword(s):

Energetic Materials ◽

Fossil Fuels ◽

Renewable Energy Sources ◽

Environmental Safety ◽

Energy Materials ◽

Ni Catalysts ◽

Co2 Methanation ◽

New Energy ◽

The Cost ◽

By Products

One of the major goals when creating new energy systems is to provide clean and affordable energy. Currently, there is an excessive increase in the cost of fossil fuels and natural gas because of increased energy consumption and the inability to meet demand. That is why it is necessary to find reliable renewable energy sources and processes that will produce energy materials without toxic by-products in order to preserve the environment and to ensuring sustainable development and a strong economy. From environmental safety reasons, this need has led to the development of the catalytic synthesis of energetic materials from greenhouse gases; in particular, this paper proposes an efficient approach to producing methane by hydrogenation of carbon dioxide over Co–Ni catalysts.

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Nanofibers-Based Piezoelectric Energy Harvester for Self-Powered Wearable Technologies

Polymers ◽

10.3390/polym12112697 ◽

2020 ◽

Vol 12 (11) ◽

pp. 2697

Author(s):

Fatemeh Mokhtari ◽

Mahnaz Shamshirsaz ◽

Masoud Latifi ◽

Javad Foroughi

Keyword(s):

Energy Harvesting ◽

Output Voltage ◽

Electrospun Nanofibers ◽

Cost Effective ◽

Energy Materials ◽

Current Output ◽

Wearable Technologies ◽

Piezoelectric Energy ◽

New Energy ◽

Self Powered

The demands for wearable technologies continue to grow and novel approaches for powering these devices are being enabled by the advent of new energy materials and novel manufacturing strategies. In addition, decreasing the energy consumption of portable electronic devices has created a huge demand for the development of cost-effective and environment friendly alternate energy sources. Energy harvesting materials including piezoelectric polymer with its special properties make this demand possible. Herein, we develop a flexible and lightweight nanogenerator package based on polyvinyledene fluoride (PVDF)/LiCl electrospun nanofibers. The piezoelectric performance of the developed nanogenator is investigated to evaluate effect of the thickness of the as-spun mat on the output voltage using a vibration and impact test. It is found that the output voltage increases from 1.3 V to 5 V by adding LiCl as additive into the spinning solution compared with pure PVDF. The prepared PVDF/LiCl nanogenerator is able to generate voltage and current output of 3 V and 0.5 μA with a power density output of 0.3 μW cm−2 at the frequency of 200 Hz. It is found also that the developed nanogenerator can be utilized as a sensor to measure temperature changes from 30 °C to 90 °C under static pressure. The developed electrospun temperature sensor showed sensitivity of 0.16%/°C under 100 Pa pressure and 0.06%/°C under 220 Pa pressure. The obtained results suggested the developed energy harvesting textiles have promising applications for various wearable self-powered electrical devices and systems.

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