According to an article published in Science magazine, the latest research from Johns Hopkins University found that a new reactive method to increase ultra-thin nanosheets (a few atoms thick) is expected to make fuel cells cheaper.

A typical case of optimized reaction applications is to increase the activity of catalysts for fuel cell vehicles. Although fuel cell technology represents a promising technology for emission-free electric vehicles, the amount and cost of precious metal catalysts (such as platinum and palladium) have been restricting the large-scale use of fuel cells, and making fuel cell catalyst reactions more active is expected. Reduce costs and further remove obstacles for the large-scale use of fuel cell vehicles.


Only five atomic layers of platinum-based metals "exactly" used to optimize the performance of fuel cell electrodes

Wang Chao and colleagues estimate that their new method can increase the catalyst activity by 10-20 times and reduce the amount of precious metals required by current fuel cells by 90%.

"Due to the destruction of crystal symmetry at the atomic level, every material experiences surface strain. We discovered a way to make these crystals ultra-thin, which reduces the distance between atoms and increases the reactivity of the material. "Wang Chao, assistant professor of chemical and biomolecular engineering at Johns Hopkins University, said.

In short, strain is the deformation of any material. For example, when a piece of paper bends, it is effectively destroyed at the smallest atomic level, and the intricate grids that hold the paper together change forever.

In this study, the R & D team manipulated the strain effect or the distance between the atoms, causing significant changes in the material. By making these lattices a million times thinner than humans, the corresponding material becomes easier to handle, just like a piece of paper is easier to bend than a pile of thick paper.

"We use force to adjust the properties of the thin metal plate that constitutes the electrocatalyst, which is part of the fuel electrode of the battery." Jeffrey Greeley, professor of chemical engineering at Purdue University and another author of the paper, explained: "The ultimate goal Is to test the feasibility of this method on various metals. "

"By adjusting the thickness of the material, we can generate more strain, thereby changing the material properties, including how the molecules are combined, which means that the reaction on the surface of the material can be accelerated more freely." Wang Chao said: "Hopefully our research The result will one day help produce cheaper and more efficient fuel cells, making it easier for everyone to use environmentally friendly vehicles. "

With the continuous development of world industrial automation, innovation and the rapid development of national economy, the domestic and foreign markets have a very broad prospect for the development of steel plate mesh equipment industry in China. At the same time, they have put forward greater, higher, farther and newer requirements for steel plate mesh equipment.

At the time of the development of the new industry, the changes of steel mesh products are developing slowly in the following four aspects.

1. Types of steel mesh products:

2. The number of steel mesh:

3. On product quality:

4. Continuous research and development of new products in networking technology: innovation will have a way out

 

Product Specification:

Thickness

Strand Width

Hole Size

Note

0.5-0.8mm

1.5mm

5×10mm

In Roll

Small Hole

0.3-1.5mm

0.3-2.5mm

(2-15)×(3-30)mm

0.3-1.5mm

0.3-2.5mm

2×3mm

0.3-1.5mm

0.3-2.5mm

3×4mm

0.3-1.5mm

0.3-2.5mm

4×5mm

2mm

5mm

25×50mm

In Panel

Big Hole

2.5mm

5mm

30×60mm

3mm

5-10mm

40×80mm

2-3mm

5-15mm

50×100mm

3mm

20-30mm

90×200mm

3mm

20-30mm

100×250mm

Applications :

1. It used with concrete in buildings and construction, maintenance of equipment, making of arts and crafts, covering screen for first class sound case.

2. It is fencing for super highway, studio, highway.

3. Heavy expanded metal can be used as step mesh of oil tanks, working platform, corridor and walking road for heavy model equipment, boiler, petroleum and mine well, automobile vehicles, big ships.

4. It also serve as reinforcing bar in construction, railway and bridges.

Advantage:

1) Used as decorative mesh for building outer wall.

2) Visibility and colorful.

3) Rainstorm or insolation won`t hurt.

4) Aluminum won`t get rusty.

5) Anti-corrosive.

6) Weight is light enough for outer wall hanging.

Galvanized Expanded Metal Mesh

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