Focus on the war of solid state batteries
发布时间：2019/10/15
In December 2016, the top British academic journal, Energyand Environmental Science, published a paper entitled "Alternative strategy for a safe rechargeable battery" ("alternative strategy of rechargeable batteries").
The paper says, the University of Dezhou at Austen Kirk College of Ergong Lei (John Goodenough) Professor John Gudinav led the team developed a low cost fast charging solid-state batteries, solves many problems of the current battery industry pain points, have not easy combustion, high volume energy density, long cycle life, the advantages of charging and discharging speed fast. For example, this kind of battery has only minimal loss after 1200 charging and discharging cycles, and it can guarantee the normal operation at the temperature range of 60 ~ - 20.
This article came out immediately, within the scope of world energy, chemistry, physics and the whole battery industry triggered a wave of a great disturbance.
There are two reasons.
1, the fourth authors special status: Professor Goode Nave: he is the father of lithium batteries, lithium battery inventor, leading global battery industry, known as the entire scientific community "touch the sky" level figures. The old professor is 95 year old this year, has been active in the forefront of scientific research and teaching, as the top experts in the field of battery, each move much industry attention;
2, Goode Nave’s research results are wrong! Its theoretical basis is even contrary to the most basic law of thermodynamics. But it is strange that all the industry members, because of their extreme respect for Gu di - Na, have all chosen to understand the way of being confused and remain silent when they are aware of the situation.
The silence was broken after a year, researchers at the Princeton University Daniel Steingart in the same "energy and environmental science" published an article entitled "Commenton" Alternative strategy for a safe rechargeable battery "" article, publicly questioned the results of old timers, and demanded the goodenough reaction mechanism was proposed wrong, "from the point of view of thermodynamics which is obviously not possible".
The head bird called, in exchange for a sound in the academic circle. Goode Nave’s father and no one can say that in the lithium industry’s position in this regard, he is just a hint of "we did not violate the first law of thermodynamics" in response.
In the year of 1991 and Sony Corp jointly developed the world’s first commercial rechargeable lithium ion battery, and promotes the human society the electronic revolution process of elderly sat in the back of mackerel wanjiebubao.
According to a person close to the truth, he told the commentary of Jian Yue car that he was the first author of the controversial paper, M.H.Braga, a female scholar from Portugal.
The academic debate above is just the iceberg of the lithium battery industry today. In fact, the academic debates, far from the reality of the wonderful commercial war.
Since its birth, it has been considered as an important position of rechargeable lithium battery industry, which is of equal importance with the invention of transistor. In the past, now and in the future, it faces two challenges: safety and energy density.
For many years, the main applications of lithium batteries are consumer electronics. However, this situation began to reverse in 2013. With the rapid rise of new energy vehicles worldwide, the power battery industry suddenly became hot and tempting.
In the future, new energy vehicles will be the most important area for the application of lithium batteries.
With analysis and prediction, the global power lithium battery market will continue to grow rapidly. It is estimated that by 2022, the total demand and market size will reach 54.9GWh and 26 billion 700 million US dollars respectively, and the average annual compound growth rate in the next ten years can reach 37% and 31.6% respectively.
In China, 60 billion 500 million yuan of power battery was sold in only one year in 2016, and the number in 2020 would be another 3. If the average price of 1.5 yuan / wh is calculated, the market size of China’s new energy vehicle power battery will reach 336 billion 300 million yuan in the next 5 years.
Forbes predicts that 20 years later, the value of the global power battery market will reach $240 billion.
However, in this round of new energy vehicles in the tide of lithium iron phosphate battery and enjoy the bonus of three yuan of lithium batteries, but gradually revealed great embarrassment embarrassment. Under the influence of the existing architecture and key cathode materials, the energy density of the lithium battery in the existing system is very difficult to break through 300Wh / kg. The energy density of lithium iron phosphate battery is much less than 140Wh / kg, and the maximum energy density of large scale three yuan lithium battery is 220Wh / kg. The upper limit of the laboratory is 300Wh / kg.
The main contradiction of the future development of new energy vehicle industry will focus on the contradiction between people’s yearning for the increasing mileage and the slow growth of battery power density.
In China, the government aims to achieve the single body energy density 300Wh / kg ~ 400Wh / kg in 2020~202 years in the next few years. Obviously, it is still three yuan of lithium iron phosphate lithium battery, all this great embarrassment.
In the United States, the US Department of energy has set up a new generation of battery research and development organization, the energy storage Joint Research Center (JCESR). JCESR is ambitious to say, "we will focus on talents and funds like Manhattan plan, and develop a battery with a density of 5 times and a price down to 1 / 5 in 5 years".
The traditional lithium battery
