Titanium dioxide nanoparticles, coated with cadmium sulfide or cadmium selenide, are suspended in a mixture of water and alcohol to form a paste-like mixture. According to the researchers, applying the paste to the surface of any conductor can generate electricity, and the entire power generation process does not require any special equipment to collect energy. The production cost of this new material developed by the University of Notre Dame is much lower than that of commercial silicon solar cells. The only drawback is that its photoelectric conversion efficiency is only 1%, which is far lower than the solar cell's 10 to 15%, the researchers said. If we can solve the problem of trying to improve conversion efficiency, the potential of this new material will be unlimited.
The new material is now named Sun-Believable and has also been planned for listing. Because although the conversion efficiency is low, it can still subsidize the traditional power supply. This will not only reduce the cost of living, but also benefit the environment.
Everyone knows that the energy issues we face in the future have become more and more severe. If humans still want to continue to survive, we must quickly think of ways before those pitiable energy resources are exhausted by us.
According to experts, solar energy coatings can be divided into two types based on the current technological level. Solar energy coatings mainly include reflective solar coatings and solar energy absorbing coatings. Reflective solar coatings are designed to cool down by adjusting the absorbance ratio of the coating. Absorption radiative ratio refers to the ratio of absorption coefficient α of solar energy absorbed by the material to its thermal emission coefficient ε. The smaller the α/ε ratio, the greater the degree of cooling, the research of reflective solar coatings is to adjust α by the choice of pigments and film forming materials. /ε value.
According to experts, the resin used in reflective solar coatings should be equipped with a resin that exhibits good UV resistance, in addition to the standard properties of the exterior coating base material. The acrylate resin has good weather resistance, UV degradation resistance, and gloss retention. , It is a kind of resin used in exterior wall paints at present, because it has very good physical properties. After coating, the surface is smooth and tough, and it is washable. It has excellent gloss retention, does not fade, does not chalk, and adhesion. Strong, chemically resistant, however, the coating is not heat resistant, and sticky after heating, resulting in decreased stain resistance of the coating. As a base material for reflective solar coatings is not ideal, so the modified acrylic is used Ester resin. Silicone resin has good heat resistance, weather resistance, gloss retention, pigment powder resistance and UV degradation resistance, just for the modification of acrylic resin.
Acrylic resin-modified silicone resins are ethoxy (or methoxy) silicone low molecular weight polymers, which contain reactive functional groups of silicone low molecular weight polymers, with hydroxyl-containing acrylates. The resin is subjected to a thermal polycondensation reaction using a solvent method to prepare an organosilicon-modified acrylic resin, and this modified resin has a good effect as a base material for a reflective solar coating.
Absorb solar coating. According to experts, a scientist named Mircea in Australia has successfully developed a coating that can effectively absorb solar energy. The first layer of the paint is a solar reflective layer made of silicon oxide, which absorbs only the sunlight that shines on the paint and does not reflect it, preventing the loss of heat. The second layer is a cermet layer that absorbs the heat of sunlight. The third layer is a metal layer with good thermal conductivity. The total thickness of these three layers is only 100 nanometers. Through experiments, this new type of paint can convert 98% of the received sunlight into heat energy, and the total efficiency of the conversion of thermal energy into electricity can reach more than 20%.
Researchers research new solar coatings: Just this month, a research group from the University of Notre Dame released their latest results, a cheap solar cell coating that can use semiconductor nanoparticles to generate energy. The principle of this kind of solar paint is to integrate quantum dots, which are nano particles that can generate electricity, into a smearable mixture.
In recent years, in the field of new energy development, our scientists have indeed had a lot of research results, such as data furnaces, power generation shoes and artificial leaf power generation, etc., but the results have been fruitful, and the commercial viability of many things is still not high. It will take some time for these things to really go into our daily lives. We are eager for high-tech products to enter our lives as soon as possible. Everyone protects our home.
We produce many kinds of kitchen scissors, strong and durable.We choose quality food grade stainless steel to make it , it is safe for food,and it can be used for kitchen food cutting. The blade of scissor is thick, its cutting edge is sharp, can easy to cut the chicken bone, duck bone,cartilage ,the chicken belly,fish belly, the vegetable and so on.It can also use as the family general scissor. In addition, the scallion scissor is a good helper for cutting scallion, chili , kelp/seaweed and other food. It is made of multi-layer blades, sharp and tough, with strong rust resistance. Kitchen scissors, is easy to cut food ,and it is very convenient to be cleaned, and hard to hide dirt. Please clean it with warm water before use, and you should clean it up with water, wipe it dry with cloth after you use it.
Kitchen Scissor,Vegetable Scissors,Cooking Scissors,Stainless Steel Kitchen Scissor
Yangjiang Yangdong Hongli Industries Co.,Limited , http://www.hongli-industry.com