Before returning to the college entrance examination, I became popular in the science circle

"We have tried, but due to the irradiation of high-energy particles, it is easy to cause damage to the SEI and electrode structure. Although cryo-electron microscopy can solve this problem, due to limitations of usage conditions, room temperature electrolyte cannot be used in the experiment, and it cannot be achieved. Observation in situ. In addition, the equipment used in this process is too expensive and has no promotion value!" Tao Ran responded directly.

This experiment they have tried, using various electron microscopy techniques to understand the evolution process of lithium dendrite growth at the nanoscale, has always been a crucial way to solve this problem, and they will naturally not miss trying!
Their new energy battery research and development must be market-oriented, that is, the expensive and expensive method is not applicable!What they are looking for is to be able to effectively suppress the growth of lithium dendrites, and the unit price must be relatively high-quality and low-cost, and it must be able to provide power for a long time before it can be used as a truly new energy battery and promoted to the public.

In fact, many laboratory methods exist in ideal data and have no promotion value.

"Shengxu and I tried to use in-situ electrochemical atomic force microscopy (EC-AFM) to conduct in-depth research on the film-forming mechanisms of SEI films for various negative electrode materials in lithium-ion batteries. Due to the characteristics of deposition potential correction, a two-step method was designed to study the real-time in-situ observation experiment of lithium dendrites!"

After more than a year of research, and Wu Tong occasionally asking for advice, Tao Ran and Ruan Chengxu can say that they have made great progress in new energy batteries, especially in the lithium battery sector. This experimental design plan is the feedback they have received so far.

"We used EC-AFM to study the growth process of SEI films using ethylene carbonate (EC) and fluoroethylene carbonate (FEC) as electrolytes in real time, and based on this, we conducted in-situ observation of the growth of lithium dendrites. !
By analyzing the Young's modulus, CV spectrum and EIS impedance spectrum of the SEI films formed by the two electrolytes, combined with XPS spectrum analysis, we found that the SEI film formed by the FEC electrolyte contains more LiF inorganic salts. Because LiF has good hardness and stability, the SEI film has high strength and can effectively inhibit the growth of lithium dendrites within a certain range! "

Ruan Chengxu added the introduction of the complete experiment. This is their progress. It can be said that they are currently in an internationally excellent range. However, they still have not completely solved the problem of lithium dendrite shuttle effect!

New energy lithium batteries, this is a very popular and cutting-edge section, and it is extremely valuable!
Why do lithium batteries have such a magical power that makes people obsessed with them? In fact, it is all inseparable and revolves around a crucial concept, energy density.

The energy contained in unit volume is called energy density.Translated into batteries, increasing energy density is the most important indicator to measure the performance of a battery, and it is also the constant pursuit of the scientific research community and industry!

Even in the country's 2020th, 300rd and 350th Five-Year Plans, the above has made a clear plan, pointing out that the power battery technology level will be synchronized with the international level by [-], and the production capacity scale will remain the world leader.The core red line is to increase the energy density of power batteries to [-]-[-]Wh/kg.

This is the general policy plan above. Wu Tong and the research team all want to contribute their part to this plan.

Of course, their team is so tempted by this big cake that there are countless people doing lithium battery research across the country and even around the world.

In the current laboratory, lithium-sulfur batteries have always been the mainstream, but after their continuous experiments and exclusions, and after consulting Mr. Wu for guidance, they finally focused on the lithium anode, which once caused an uproar. The field that has been given up by most is not because they are trying to please others by claptrap, knowing that there are tigers in the mountains, but prefer to travel in the mountains with tigers. Rather, the field of lithium anodes is really extremely valuable!
As long as they can successfully solve the problem of lithium dendrites, all those hotly-hyped concepts will have to be put aside to make way for their lithium anode batteries.

Not for anything else, just because the lithium metal anode has the lowest electrochemical potential of -3.04V, not to mention a high specific capacity of 3861mAh/g.

Using lithium material as the negative electrode, the theoretical energy storage effect of graphite batteries is ten times that of a graphite battery. It is really tempting. It can be said to be all-round, crushing the energy density of graphite negative electrode materials!
And the most attractive part is that once the problem of lithium dendrite growth is solved, there is no need to make major design changes to the existing batteries. The existing common graphite anode materials can be directly replaced to achieve battery energy A leap in density!

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If they can make a breakthrough in this field, they may soon be able to use mobile phones and computers that can stand by for one to two weeks in the future, and can easily surpass the currently idle electric vehicles that can start at [-] kilometers, thus fully linking the The situation of domestically imported oil is one of the important layouts for promoting new energy vehicles.

Mr. Wu and others all want to make transcendent breakthroughs in this field.

Not to mention the honors of success and fame, just this research and development patent, and the royalties brought by it, can make them a lot of money. They are likely to have economic freedom, and they no longer have to worry about money issues. Their freedom Funding will inevitably increase significantly. In the future, experiments may be carried out with less effort.

Although they are now in Mr. Wu's laboratory, and the equipment in Mr. Wu's research institute is already more advanced than many laboratories, this does not affect the fact that they want the laboratory to be better.

If ordinary people have a huge pursuit of cars, houses, gold, silver and jewelry, then they also dream of various advanced experimental equipment, which makes their hearts beat more excited than money and beauty!
The atmosphere in the conference room gradually reached a climax with Ruan Chengxu and Tao Ran's analytical speeches. It can be said that every member actively expressed their thoughts and feelings after studying and studying for such a long time.

Mr. Wu is doing it, so of course they have to show positive performance. If they can get a little bit of guidance from Mr. Wu, their future research and development path will be smooth for who knows how many levels!

Biochemical environmental materials, the four major tiankeng, can take the initiative to step into these tiankeng, and are still making progress. They are not just studying for academic qualifications, but in real learning, they have touched the mystery and fun of these studies. The reason is that they really like this major and are very interested in their own major, which is the source of motivation that supports them to get to where they are now.

No one wants to go one step further!