Recently, Huang Hao Laboratory of Dalian University of Technology proposed a carbon-constrained iron nitride nanoshells shell structure for lithium-ion secondary batteries in the cycle process, the serious volume expansion of the active material, resulting in electrode powdering failure bottleneck. After using the new technology, in 500 cycles of experiments, the battery can still maintain the working capacity, no significant attenuation was found. Relevant results published in the "nano-energy" journal. In this study, carbon-constrained iron nitride nanomaterials were prepared as the negative electrode of lithium-ion batteries by plasma physical and chemical nitridation process, which achieved high-density energy storage and electrode material stability of lithium-ion batteries. At the same time, the electrolyte can freely enter the carbon layer through the defect position and electrochemically react with the active material iron nitride. The flexible carbon shell can not only reduce the volumetric expansion and contraction of the active material during the storage and storage of lithium, resulting in the electrode powdering failure problem, meanwhile, the excellent intrinsic conductivity of the carbon layer provides an effective path for the rapid transfer of interface charges to achieve the carbon constraint Long - cycle High Density Charge - Discharge Performance of Iron Nitride Nanomaterials in Lithium Ion Batteries. The research results provide theoretical basis and technical support for improving the engineering application of nano-energy materials and devices. The shaft is covered with a rubber ring, and the rubber ring is evenly arranged with oil injection holes around the rubber ring to reduce the friction between the connecting rod and the sleeve. The connection head is equipped with a spring to reduce the noise caused by the resonance of the connecting rod and the dust cover, thereby achieving the effect of vibration reduction and noise reduction , Extend the service life of the shock absorber and enhance the practicality of the shock absorber. Piston Rod,Piston Connecting Rod,Piston And Rod,Piston Conrod Ningbo Huilexin Technology Co.LTD , https://www.oemshockabsorbers.com