Foreign media: scientists invent foldable graphene batteries

Foreign media said that a recent research result published in the British "Nature · Energy" magazine showed that scientists used previous findings to create a new type of graphene folding device that can store energy. According to a report by the Spanish newspaper Le Monde on February 17, in 2004, two researchers from the University of Manchester, Andre Heim and Konstantin Novoselov, peeled off very thin Graphene carbon layer.

Facts have proved that ultra-thin graphene is flexible, a good thermal and electrical conductor, lighter than paper, but 200 times harder than steel.

It is reported that after the first phase of research and classification, the research around graphene began to stagnate. The actual use of graphene is also struggling, largely because of one of its fascinating main characteristics-super hardness makes it difficult to process.

However, graphene has once again become the focus in recent years. In 2018, the Spanish scientist Pablo Harillo-Herrero of the Massachusetts Institute of Technology discovered that when two layers of graphene are twisted together at a "magic angle", they will exhibit unconventional superconductivity Sex.

The report said that a new research route was opened. Today, scientists at University College London in the UK have used previous findings to create a new graphene folding device that can store energy. This supercapacitor can be folded up to 180 degrees without loss of performance, and it can maintain 97.8% of capacitance after 5000 charges.

This supercapacitor is 6 cm in size and consists of two electrodes. The film in the middle is used as a medium for transferring charge. Researchers have used this device to successfully light up dozens of LED lights. The new achievement solves the recurring problem in battery manufacturing: it is difficult to store large energy in a small space.

The researchers pointed out: "We have used materials that enable our supercapacitors to have both high power density and high energy density. Normally, it is achievable to have only one of these features, but there are no doubt that they have two features at the same time. It is a major development. "

40Cr Material Rebar Coupler is one type of coupler made by raw material 40Cr steel. The strength can reach the tensile test of HRB335, HRB400 and HRB500 and equivalent rebar.

Rebar parallel thread splicing coupler is applied to rebar mechanical splicing for concrete construction projects, and it mainly connect HRB335, HRB400 and HRB500 hot rolled ribbed bars with diameter 12-50mm.

The strength of material 40Cr is stronger than 45C, so if customer need to connect hard rebar, we'll suggest the coupler with material 40Cr Rebar Coupler.

We have test report with 40Cr material rebar coupler, the Rebar Coupler Joint performance has reached JGJ107-2010 standard for the Grade I splicing rebar joint.

40Cr Material Rebar Coupler

40Cr Material Rebar Coupler,Reinforcing Bar Splicing Coupler,Mechanical Rebar Coupler,Steel Screw Rebar Coupler

BAODING JINDI MACHINERY CO., LTD , https://www.rebarconnectors.com