Scientists have developed the first fully rechargeable carbon dioxide battery. 5

According to foreign media reports, the exploration of advanced materials that can advance battery technology to a higher level has brought scientists to some imaginative places, including designs inspired by the human spine and the creation of key components into nano-chain structures. Other designs. Another example involves the production of too much of an element in carbon dioxide. Scientists have now studied it as a battery capable of performing 500 charge and discharge cycles.

Since its energy density is expected to be more than seven times that of today's typical lithium-ion designs, people are very interested in the development of lithium-carbon dioxide batteries. Past research has yielded some gratifying results. The breakthrough we saw from MIT last year is a recent example.

The team of mechanical engineers first proposed a new type of electrochemical reaction that increases the discharge voltage and eventually converts carbon dioxide into solid carbonate materials. The researchers pointed out a shortcoming of the battery design, which is that the battery can only be charged and discharged for 10 cycles before failure.

A team at the University of Illinois at Chicago (UIC) now claims to have developed the first fully charged lithium-carbon dioxide battery. The technical problems that the researchers overcome focused on the tendency of these batteries to quickly fail due to carbon deposition on the catalyst during charging. To date, this trend has plagued similar efforts.

The first author of the paper, Alireza Ahmadiparidari, a graduate student of the UIC School of Engineering, said: "The accumulation of carbon not only prevents the active site of the catalyst and prevents the diffusion of carbon dioxide, but also triggers the decomposition of the electrolyte in the charged state."

The researchers found that one way to solve this problem is to introduce new materials to enhance the battery's ability to recycle materials again and again. This means integrating molybdenum disulfide nanoflakes into the cathode catalyst and using a new hybrid electrolyte made of ionic liquid and dimethyl sulfoxide.

The researchers said that this combination resulted in the battery output of a composite material composed of multiple components rather than a single product, thus seeing that carbon naturally mixed into the recycling process, rather than forming a troublesome accumulation on the battery catalyst itself. So many, they can charge the prototype battery in 500 charge and discharge cycles.

Salehi-Khojin, Associate Professor of Mechanical and Industrial Engineering, said: "Our unique material combination helps to create the first carbon-neutral lithium-carbon dioxide battery with higher efficiency and longer cycle life, which allows it to be used for advanced energy storage In the system. "

This research is still a long way from commercial production. However, it does provide another proof-of-concept energy storage device for the next generation of batteries, and another possible way we might one day convert carbon dioxide into more useful.

The research was published in the journal Advanced Materials.

Double Handles Bathroom Faucet

1. Copper body: As far as the faucet is concerned, copper has long become the preferred material, mainly because the antibacterial effect of copper media has long been recognized by authoritative laboratories. Most high-end bathroom brands use copper as the body of the faucet, and the elimination of other materials has become an inevitable trend.
2. Electroplating: The quality of the electroplating surface is the most intuitive expression of the quality of the faucet. The surface plating is mainly nickel and chromium, so that it achieves a smooth and bright effect. Good quality faucets will undergo many tests, such as salt spray test, water test test, gas test test, etc., to ensure the durability of the faucet. After high-precision plating faucet, durability is basic, and more importantly, its surface gloss is good and comfortable to handle. Some high-grade faucets have other different treatment techniques, such as stainless steel and satin.
3. Filter screen: In areas where the water quality is not superior, the installation of the filter screen can reduce and filter impurities, and at the same time prevent the possible damage caused by impurities to the ceramic valve core. There are two installation locations for the filter: the water inlet and the spout.
4. Rotation angle: can rotate 180 degrees to make the work convenient, and can rotate 360 degrees is only meaningful for a sink placed in the center of the house.
5. Can lengthen the shower head: increase the effective radius, increase more functional possibilities, and the sink and container can be filled faster. In order not to make unpleasant noises, metal pipes should be avoided as much as possible.
6. Water pipe length: Experience shows that 50 cm long pipes are enough, and pipes of 70 cm or more can also be bought on the market.
7. Anti-calcification system: calcium will be deposited in both the shower head and the automatic cleaning system, and the same situation will occur on the faucet, where silicon will accumulate. The integrated air cleaner has an anti-calcification system that prevents calcification of the device internally.
8. Anti-backflow system: This system prevents dirty water from being sucked into the clean water pipe, which is composed of layers of materials. Devices equipped with an anti-backflow system will display the DVGM pass mark on the surface of the package.
9. Material: Stainless steel is hygienic and environmentally friendly. Chromium devices are easy to care for and harmless to people, but other elements need to be added to the manufacturing process. Therefore, it must be paid attention to what materials the equipment is made of, and not all countries have such high standards as Germany.
10. Durability: The anti-calcification system can protect the equipment from the danger of water leakage and handle damage.

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