requestId:68629a7da26421.05104297.
201Manila escort9 years, the ion battery has passed 28 years. The history of ion battery will be traced to the first commercial ion battery released by Sony Sony in 1991. Before that, Moli Energy released Li/MoS and Song Wei always smiled on her face: “No, don’t listen to my mother’s nonsense.” 2Escort The manila battery has become one of the world’s most powerful battery companies with its outstanding agility, making Moli Energy one of the world’s most popular battery companies, but the good times have not been long. Many battery fires and explosions have caused large-scale recalls, and Moli Energy has also been in a slump since then. Later research and development revealed that the important factor of the platinum secondary battery fire and explosion comes from the growth of dielectric dendrites during the charging process. It is because people start to try to develop a negative data that can replace metal dielectrics. At that time, Yoshino Akira, who was working in Asahi Kasei, turned his attention to high-energy density graphite negative data, and used new carbonate solvents to solve the problem that traditional solvent PCs could not form a stable SEI film in graphite negative situations. In 1987, the coke/LCO system galvanic ion was released. baby battery is also the shape of all steel ion battery systems today. It is also called the father of steel ion battery by Yoshino Akira. Since then, Asahi Kasei cooperated with his partners Sony and A&T Battery to successfully commercialize steel ion batteries, and developed rapidly under the comfort of the grand demand for consumer electronic products such as video machines, and achieved great success.
Source of this article: Xinxingli Leader WeChat public ID: newenergy-leader Author: 未分米
When it comes to the ionic battery developed by Yoshino Akiyoshi, we have to mention a certain weight-Goodenough, the late ionic battery, and the majority of 3C type of ionic battery today, but now… the positive information used in the sub-battery is a kind of data called oligo acid diol (LiCoO2), and this data is GoOdenough old man made it with one hand. Goodenough was in the UK at that timeManila escortOxfordSugar daddy studied the LiCoO2 data. The theoretical capacity of this data is 274mAh/g, but not all Li+ pools can be reversible. Too much Li+ depletion will cause the data layer structure to collapse. Goodenough finally achieved more than half of Li+ depletion, which has led to the reversible capacity of LiCoO2 reaching more than 140mAh/g. This result laid the foundation for Sony’s release of the first commercial steel ion battery.
Sony’s first-released commercial steel ion batteries have a noisy and controversial amount of energy density. The energy density of the carbon fiber is only 200Wh/L (4.1V). The development of the steel ion battery has entered the expressway. In 1995, the japan (Japan) Toshiba Company discovered that the embedded capacity of carbon data is closely related to its layer distance d002. The smaller the distance, the lower the reversible capacity. When d002=0.344nm (complete graphitization) the carbon data has the lowest capacity, the theoretical capacity is only 372mAh/g, while the theoretical capacity of hard carbon data (0.372nm) with a layer distance is much higher than that of graphite data. Therefore, on the second generation of steel ion batteries, people gave up soft carbon (coke) data and used hard carbon data, which also improved the density of the steel ion batteries to 220Wl/L. The component energy density has improved to 85Wh/kg (4.2V).
But hard carbon data is not the best negative data selection. At the beginning, the density of the hard carbon data is smaller (the layer of the crystal is large), and there is also a serious inverse capacity loss during the initial charging and discharging process. This will consume a large amount of Li+, which will affect the energy density of the steel ion battery. At the same time, we can find that the capacity of graphite data and hard carbon data is largely on the same platform, while the hard carbon data has EscortA very large door has a concentrated capacity on the curve, which is often uneven for the energy density of the ionic battery.
The wind-water flow is transferred. Due to the various problems in hard carbon data, people start to examine the energy of graphite data as the negative data from the beginning. The late graphite data is on PC The problem of unstructured SEI films in the solvent and the problem of PC co-embedding hindering the application of graphite data. However, by adding EC solvents in the electrolyte, people formed a stable SEI film in the graphite profile and prevented the problem of PC co-embedding after mid-1990s. href=”https://philippines-sugar.net/”>Escort manila, the galvanized ion battery market has begun to gradually shift to graphite data, and with the continuous increase in graphite data functions, its market share has also increased year by year, and hard carbon data has been gradually reduced. With the help of graphite data function, the Sugar baby function also achieved a large recovery, with the physical energy density increasing from 350Wh/L in 1997 to 625Wh/L in 2011.
After years of development of graphite data, the reversible capacity of today is very close to its theoretical capacity. In order to further improve the energy density of the steel ion battery, people have begun to turn their attention to other data with higher capacity. Among the many candidates, Si is extremely responsible for obtaining a wide range of Escort with the high capacity advantage of 4200mAh/g (Li4.4Si) manilaFollow. However, Si data is not a complete negative data. Under the state of complete embedded steel, the expansion of Si data can reach more than 300%. This will not only form the powderization of the Si data itself, but also destroy the electrode structure and the power-conducting network, causing the reversible capacity of the steel ion battery to rapidly decline.
Although I have been a scientific researcherWith their unremitting efforts, the most existing problems have gradually gained. Of course, the real boss will not let this happen. While fighting, she fought, but the Si data was obviously not the most fantastic negative information, and people are still looking for the ultimate goal – metal Li. History of Steel Ionic BatterySugar daddy is like a circle. At first, we gave up the metal Li because of the safety problem, but after more than 20 years of development, we have returned to the metal Li because of the energy density. Of course, we are now returning to the metal Li’s negative debt, which is not the original point. Tomorrow we have a deeper understanding of the safety problem of the metal Li, and have proposed a better solution – all-solid battery, high shear with solid electrolysis quality Sugar baby strength prevents growth of metallic li-bonded dendrites, thereby preventing the occurrence of internal short circuits.
Silic ionic battery opening Shanzu Master’s level of positive data calcined acid (LiCoO2) was first proposed by Godshall and others of Stanford in 1980. Finally, this data required a high temperature environment of 400-450°C. However, soon after Mizushima and others discovered that if organic electrolytes were used, such data could be stable at normal temperatures. The emergence of LCO data has significantly improved the task voltage of steel ion batteries (above 4V). After Goodenough’s full-scale LCO data has reached a reversible capacity of more than 140mAh/g, laying the foundation for the later release of steel ion batteries by Sony.
The LiMn2O4 data developed simultaneously with LCO is also the LiMn2O4 data with spinel structure. Compared with LCO data, the LiMn2O4 data is better at cost, with better thermal stability, better power characteristics and less toxicity. However, the LiMn2O4 data still has low power voltage, physical expansion and Mn For problems such as ablation, the application of LiMn2O4 data has been greatly restricted. In 2005, the market share was only 10%, and by 2016, it dropped to 8%. Today, the application of LiMn2O4 data is mainly concentrated in some electric things, as well as the LiMn2O4 data mixed with other data in the batteries of Japanese-owned listening vehicles.To reduce capital and increase stability. In 1997, Padhi et al. from the Texas Major Austin School decomposed LiFePO4 (LFP), LiMnPO4, LiCoPO4 and LiNiPO4 data, and discussed and confessed that in these data, as long as the LFP data can reversibly embed and remove LiEscort manila+, with the advantages of low capital and stable LFP data, is agile in the power battery field. In 2016, its market share has reached 36%. LFP’s market share has even launched a patent war in the country.
Related reading: “The next Chinese affairs? The loss of battery data focus patent! 》
The pursuit of high ene TC:
發佈留言