A research team from South Korea recently demonstrated a new type of sodium ion rechargeable battery at room temperature and high energy density using a sulfur dioxide-based inorganic fusion cathode electrolyte that serves as both a sodium ion-conducting electrolyte and a cathode material. According to the total mass of the catholyte and the carbon electrode, the discharge capacity of the new sodium ion battery is 153 mAh / g and the operating voltage is 3V. The battery pack has excellent charge and discharge performance under high current conditions, as well as the charge-discharge cycle performance Very outstanding, able to more than 300 times. Of particular note is that the new inorganic liquid electrolyte has flame resistance and self-reconfiguration features that help accelerate the commercialization of sodium ion rechargeable batteries. The researchers constructed a battery containing 2032 sodium-sulfur dioxide button cells using a sodium metal anode and a long and short carbon cathode. The liquid electrolyte was a sodium aluminum chloride and sulfur dioxide complex solution. Based on a discharge rate of 0.1 coulomb carbon cathode, the discharge capacity of the cell is about 1800 mAh / g (or 4.1 mAh / cm), which compares favorably with the conventional commercial Li-ion battery (3-5 mAh / Square centimeters) is basically equivalent, much better than previously reported performance of lithium-ion batteries and sodium-oxygen batteries. The discharge capacity of the sodium-sulfur dioxide battery can reach 897 mAh / g, even at high current densities of 5 coulombs. However, the energy efficiency between charge and discharge is only about 80%, this point needs to be further improved. Sodium-sulfur dioxide battery after repeated charge and discharge cycles, the storage capacity decay rate is relatively low; each discharge process energy exhausted, and high-coulomb rate of high-current charge and discharge conditions, after 100 cycles of storage capacity to reach 75% of new battery pack. The cell chemistry is a highly reversible redox reaction between sulfur dioxide and sodium tetrachloroaluminate. A composite inorganic electrolyte consisting of sodium aluminum chloride and sulfur dioxide ensures the reliability of the sodium-sulfur dioxide battery, The safety of the life cycle is also guaranteed.
High Precision And Quality ER Clamping Nut, EOC Clamping Nut,Used for Cnc Tool Holder,Material high quality spring steel,The price is reasonable and durable,Product categorie of Nuts, we are specialized manufacturer in producing ER Clamping Nut, EOC Clamping Nuts, offer Nuts R & D and manufacturing, we have the perfect after-sales service and technical support.
Clamping Nut,Clamp Nut,High Precision Clamping Nut,Clamp Lock Nuts JINING QINFENG MACHINERY HARDWARE CO.,LTD , https://www.qftoolholder.com