Samsung Notepad Samsung Galaxy Note 7s has been banned from boarding by airlines worldwide for doubts about a battery explosion, but scientists investigating battery fire or explosions have recently taken the first place in fire safety The root cause of the uncontrolled fever they tracked comes from the small dendrite formed between the anode and the cathode of the cell.
Materials experts at Drexel University in the United States have proposed a low-cost, easy way to help prevent the formation of such 'dendrites': nanodiamonds are mixed with ordinary lithium at a concentration of at least 1% Ionic electrolytes.
Yury Gogotsi, a professor at the University of Xkoxo, and a Ph.D. candidate at Tsinghua University in China found this approach, but to allow Samsung and many other lithium-ion battery manufacturers and OEMs to embrace and adopt the concept should be more effective than the researchers Nano-diamond additive is more effective and more difficult.
Gogotsi said: 'We had to use the in-house funding provided by Drexel University to prove that the concept was workable and we are still struggling to attract funding from our industry partners to characterize the process in more detail and determine which specific applications require adding nano-diamonds Into the electrolyte.
Yury Gogotsi
In fact, lithium-ion battery technology is already expensive and will it scare away cost-conscious manufacturers when it comes to 'diamonds' from nanodiamonds? But Gogotsi notes that such concerns are superfluous because the nano Diamonds are cheap to make and can actually be made from scrap.
Gogotsi said: 'You just need to use expired explosives, or they are expensive to process and then detonate in a closed chamber with the result that more than 50% of the nanodiamond coating is created on the cavity wall and measures about 5 nanometers. Just use the expired
This mechanism is like the way Superman made diamonds in a comic: a superhero exerting extremely high pressure on ordinary carbon to force it into the most compact structure, of course in the Man of Steel movie , Superhumans can do it by hand, and Gogotsi's method depends on the extreme pressure caused by detonated in a confined space.
Gogotsi's lab used the process of making this nano-diamond, but he said, 'This process is actually invented by three Russian labs, and must be kept secret, and every laboratory does not know about other labs Find. '
The Los Alamos National Lab, the Los Angeles National Lab, has finally published details of the process and has been used worldwide to convert hard-to-treat waste (such as expired C4) into a marketable product. Nano diamonds are also widely used in industrial grinding, medical coatings and magnetic field measurement of electronic sensors and other products.
Now, nano-diamonds are ready to solve the problem of battery fire or explosion - if the manufacturer is willing to believe it.
Compile: Susan Hong