Clarification of the key materials and energy density of lithium-ion batteries

Recently, the relevant research team proposed a mechanism based on the appearance of nanometer precision to promote the invariance of electrode materials: based on the controllable high-temperature solid phase response of the appearance, the introduction of zinc ions promotes the appearance of lithium nickel manganese oxide spinel layout It is transformed into a composite configuration of the rock salt-like phase and the layered phase, and the two comparison ratios are accurately adjusted, which promotes the invariance of the material layout without sacrificing the electrochemical activity of the material. This extraordinary appearance and phase regulation mechanism can overcome the damage caused by the inert coating method to charge transport through exceptions. It provides a key electrode material with high capacity and high invariance based on the regulation of the chemical characteristics of the electrode material itself. New methods and mechanisms, related matters are issued in (J.Am.Chem.Soc.2019,141,4900-4907). Why did everyone talk about hydrogen discoloration? In fact, fuel-powered battery vehicles are not the first time that hydrogen has been used in human traffic. As early as 1940, the Germans used hydrogen on giant passenger airships, but hydrogen is not At that time, it was not used as fuel, but was filled in the entire airship as a buoyant gas. The famous Hindenburg airship is the longest craft produced in the history of mankind. Its existence was once the complacency of Germany at that time, and it was put into a publicity campaign at the 1936 Berlin Olympics. The researchers proved that Bai used electrospinning technology to create composite material barriers with embedded MOF particles as effective anionic adsorbents. The complexation of the anions in the electrolyte with the OMS of the MOF particles improves the tLi+ and Li+ conductivity. At the same time, the porous composite barrier eliminates the analysis of the electrolyte and promotes the dynamic response of the electrode appearance, presenting a more constant interface between the electrolyte and the electrode. The application of this composite barrier can significantly improve battery performance and delay the cycle life of the battery, thereby providing new strategies for the design of the next generation of lithium-ion batteries. The application of this composite barrier in traditional lithium-ion batteries can significantly improve rate performance and cycle life, providing new prospects for high-performance lithium-ion batteries. The barrier in the lithium-ion battery is used as an electrolyte reservoir, which has the purpose of restraining ion transmission and significantly affects the battery's performance. Polymer barriers (polypropylene (PP) or polyethylene (PE)) are generally used as barriers for lithium-ion batteries because of their excellent electrochemical stability and mechanical performance. A lot of research has been devoted to providing barriers with various results that can suppress the rise of lithium dendrites, reduce the analysis of polysulfides, or improve the thermal invariance of barriers. For example, barriers containing hydrophilic polymers or ordered nanoscale layouts can be used to improve electrolyte adsorption and eliminate the formation of dendrites. Graphene and metal oxides are also coated on the barrier to reduce the shuttle effect of polysulfides in lithium-sulfur batteries. Refractory materials such as hydroxyapatite and polyimide are also used to deal with flammability issues. Ceramic particles such as SiO2, Al2O3 and ZrO2 are also incorporated into the polyolefin barrier to improve the wettability of the electrolyte and the thermal stability of the barrier and machine performance. However, this performance barrier still lacks the ability to regulate the ion transport process and still shows a low tLi+. There are as many reports as possible, such as the application of sulfonated copolymers and barriers to improve tLi+, but this barrier is usually limited by the low lithium ion concentration in the barriers, which indicates lower lithium ion conductivity. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous post: Do you know how to maintain a lithium-ion battery pack if it is not used for a long time?