Sulfur battery sodium is the United States Ford (Ford) was invented in 1967, the company announced today, only about 40 years. The battery is usually caused by the cathode, anode, electrolyte, membrane and shell, etc. parts. Conventional rechargeable batteries such as lead acid batteries, nickel-cadmium batteries with electrodes and solid electrolyte composed of liquid sulfur Laptop battery sodium is, however, is the electrode of the liquid composition liquid electrolyte and solid, the composition of its negative activity equipment is sodium molten metal, the cathode active material is molten sulfur and sodium polysulfide, because sulfur is an insulator, so sulfur is usually filled with the porous conductive carbon or graphite felt, the solid electrolyte and a conductive membrane is a specialized sodium ions are known as the envelope of Al2O3 ceramic materials are usually stainless steel and other metallic materials.
Sulfur battery sodium has many functions: An office of the specific energy (eg, per unit mass or volume of cells have the power valid) high. The theoretical specific energy of 760Wh/Kg actually more 100Wh/Kg is a lead-acid batteries 3-4 times, the other is high current discharge, high power. The current density of discharge is usually up 200-300mA/cm2, and the instantaneous time can be three times the release of its inherent energy, another is the charge-discharge efficiency. Following the solid electrolyte, so there is no liquid electrolyte secondary battery is usually the kind of self-discharge and side effects, charge-discharge current efficiency is practically 100%. Of course, things are always divided into two, sulfur and sodium batteries are also weak, its operating temperature to 300-350 ℃, therefore, the Dell Inspiron B120 battery needs some work, heating insulation. However, high-performance vacuum insulation and thermal insulation technology, which can effectively solve this problem.
Power of sodium sulfur batteries as a new family of chemicals, the emergence of a new member, has been in many countries around the world, much attention and development. As the sulfur battery sodium has a range of attractive features of high-energy batteries, so a start on the first of a number of countries are engaged in the development of electric vehicles used as traction batteries, also made very encouraging results, but with the passage of time has shown that sodium sulfur batteries in a mobile situation (eg electric vehicles) to use the conditions are difficult, whether using the space, safety of the battery itself, so there is a certain limit. Therefore, in the late 80s and early 90s, the foreign accent on the development of sulfur battery sodium opportunities as fixed (such as storage of electrical energy) applications, and more to demonstrate its superiority. As Japan and Tokyo Electric Power Company (TEPCO) and NGK companies to develop batteries that sodium sulfur battery energy storage, its demands for electric power upgrade charge (it ie, from Clipping Pinggu role will be night, excess electricity is stored in the hp F4809A battery inside, day with the peak power, then released from the battery), UPS and emergency power compensation of instantaneous power, etc., and in 2002 entered the marketing stage of implementation, has become the largest (8 MW) batteries sodium sulfur storage devices, energy from 2005 years during October statistics, annual production capacity of sodium sulfur battery batteries on 100MW, while beginning to export abroad.
Sodium sulfur battery
The sodium-sulfur batteries are generally optimistic about the recent battery electric vehicles Bodhisattva, the United States Ford Motor Company Mnivan electric vehicles is the use of sodium-sulfur batteries. It was the United States Advanced Battery Consortium (USMABC) as a medium-term development of sony VGP-BPS2A battery electric vehicles, produced by ABB, Germany B240K sodium-sulfur battery type, quality of 17.5 kg capacity building 19.2Kw/h; Energy 109Wm/kg, life cycle 1200 times, the test loading of the best penalty-wheel car free 2300 km.
Travel boosts the energy of a sodium sulfur battery involving new energy battery power sodium sulfur. For existing driving-acid batteries, nickel cadmium, heavy volume, discharge time is short, continuous, limited to starting, lighting, experimental, short-run use of electric vehicles insufficient to provide the same sort of weight of lead acid batteries can produce 15 times more power, discharge continues for a long period to track their own supplement a sodium-sulfur batteries, and its ultimate goal is to replace the existing Travel kinetic energy, and d ‘ other electric motors, a new impulse to the battery power sodium sulfur. The technology options are: 1, insulation tube, 2, vacuum chamber, 3, body shell 4, the intermediate tank, 5 hole complicity, 6, cord heating, 7 plates of electrodes, 8, temperature controller, 9, sodium, 10, insulation materials, 11, electrolyte 12, sodium sulfide, 13 heaters, 14, thermometer, 15, Supplement electrolyte tube, 16, cord heating, 17, heating wire, 18, and the inner tank.