Orion Crest, Series_1

Chapter 157: Lithium sulfur batteries

　　Lithium-sulfur batteries are also being researched by companies in many countries, and they have already started for a long time.

　　If the human civilisation lights up this technology tree still needs to unlock 10 technical problems, and these 10 technical problems can give birth to 100 patents, then the research institutions may have already established 30 to 40 patents, or even more.

　　In the framework of the WTO, once a company in a certain area of the formation of a patent barrier can not be bypassed, for other enterprises will be in an absolute advantageous position.

　　For example, in the field of chips, Qualcomm has been successful as the father of other 3C manufacturers, even if the requirements of a manufacturer of their own patent public authorisation, you can do nothing.

　　Because the game is built on both sides of the equivalent strength of the situation, and the strength is not equal when there is no game of this issue.

　　Change the enterprise into a country, this law also applies, only the role of the main body from the market share into the trade surplus and deficit, supply chain dependence and so on.

　　After listening to Lewis's request, Orion froze slightly, and after thinking seriously for a moment, he replied cautiously, "Although I would like to help you, I only have some research on negative electrode materials, but not much on the whole lithium battery, so I'm afraid it's hard to be of use."

　　It wasn't that he was hiding, what he said was the truth.

　　Modified PDMS film although solved the most headache lithium dendrite problem, but the technical difficulties of lithium-sulfur batteries are not entirely in the lithium anode materials.

　　For example, the first of these is the extremely poor electrode cycling performance.

　　Sulfur positive electrode in the discharge is not directly generated lithium sulfide, but gradually be reduced, accompanied by the generation of lithium polysulfide intermediate products. And lithium polysulfide will dissolve in the vast majority of the electrolyte, dissolution loss occurs. These dissolved lithium polysulfide will diffuse to the negative electrode reduction, and then oxidation in the positive electrode.

　　This phenomenon, which eventually causes the positive material and negative electrode to stick together, although it doesn't always cause a safety issue, it can make the entire battery non-cyclable.

　　This is the "shuttle effect" that Prof Sarote chided Prof Krell about at the MRS conference.

　　The solution to this problem could be achieved through the cathode material or the electrolyte. There are a lot of options, but it would be difficult to find a suitable solution.

　　The half-sheet of drawings Orion parsed down from the wreckage through the scanning gun, most likely a lithium-air battery far beyond the current level of technology, and jumped at least two levels.

　　Although lithium-air batteries also use lithium as the negative electrode, they do not use sulfur as the positive electrode, and even the electrolyte is not known to exist, so naturally, there is no need to consider the problem of the "shuttle effect".

　　"Of course, this challenge will not be on you alone," Lewis said with a smile, "This study will involve more than 20 research institutions such as the CNRS Institute of Physics and Chemistry Technology and the Nanoscience Research Centre, which will work on the various technological difficulties in the field of new energy. Lithium-sulfur batteries are an important part of our new energy strategy, and in addition to you, all the major research units have specialised groups to focus on key breakthroughs for this topic!"