Japan Eamex is stepping up efforts to make the company has developed products of large-capacity capacitors. This capacitor is a hybrid capacitor, through the solid polymer electrolyte membrane to form the surface of gold electrode treatment. By improving the method of gold-plated, increased electrode surface area, improve the physical adsorption. Also with the use of lithium ion in the electrolyte produced by electro-chemical effects of increased energy density. Currently car maker owned by the capacitor over lithium-ion rechargeable battery energy density expressed a strong interest in, there are already some manufacturers are exploring the practical issues.
Eamex in June 2009 announced that the capacitor energy density per unit volume reached 600Wh / L. 600Wh / L, this value can be achieved with high-performance lithium-ion rechargeable battery match the energy density level. Although the unpublished details, but learned through improved processing conditions for the gold electrode surface area is increased compared with the Ministry to 2 million times, while also making solid polymer electrolyte membrane thickness of about 60μm than the original reduced by half, only 31μm. That the energy density per unit volume has been improving leaps and bounds. As the gold-plated electrode latitude cpi battery , inspiron 8200 battery thickness of the Department of 10μm, thus creating a yin and yang, two electrodes and solid polymer film with the same thickness of the structure. In addition, the solid polymer and other materials for the improvement of energy density to make a contribution. Solid polymer capacitors and lithium-ion capacitor, requires prior adsorption of lithium-ion process (pre-injection) (Eamex the lithium-ion implantation process is called activation (Activation). Lithium-ion capacitor in the process on a time-consuming and is recognized as One of the difficulties.). Since the adoption of the solid polymer with a negatively charged functional groups, so injection of positively charged lithium-ion can easily enhance the electrostatic capacity.
“Battery costs can be reduced to 1 / 10″
This capacitor power density per unit volume reached 20000 W / L, much higher than the existing electric double layer capacitors. Used for electric vehicles and hybrid battery, the just need to have high power density, in order to provide start and acceleration power when needed. For helping to improve power density is to make gold-plated metal parts on the colloidal concentrate. This is achieved by adjusting the gold-plated conditions. After such improvements, reducing the internal resistance, increased inspiron 8000 battery , inspiron 8100 battery power density. In the early stage of development, the internal resistance of capacitor large, low-power density, once the largest and difficult, it is now enough to practical levels. In addition, gold-plated pre-processing and the electrolyte injection methods are also used that can enhance the energy density and power density of its own technology and experience.
Record 600Wh / L record of guinea pigs, although very small, only 0.2 × 0.5cm, but the company has also succeeded in the trial of the A4-size products, to ensure a certain performance, large-scale under the situation, it seems not difficult. Receive an additional 600Wh / L when you need to optimize the performance of the conditions, not under any conditions have access to the performance. Nevertheless, the average is still achieved 150Wh / L, “now that the performance adequate. In the future will be to create a stable unit vigorously develop” (Eamex Representative Director, Sewa letter I).
Although not released details of the unit formed by a thin film stack is also developed. The corporation’s projections for electric vehicles in mass production unit weight of the energy density of 100Wh/kg battery when the battery is expected to use the technology to ¥ 20,000 / kWh cost of the implementation of volume production. Existing lithium-ion rechargeable inspiron 4000 battery , inspiron 4100 battery is estimated that the price of ¥ 200,000 / kWh, the cost of only about their 1 / 10. However, car batteries, requiring excellent safety and reliability. Seto and estimates for notebook computers and mobile phones and small electronic products, batteries will be sooner reached the practical level, and with confidence that “is expected to 2,3 years after the practical.”
On the other hand, Eamex is also a bigger market for cars such as showing a strong desire, that “both before and after 2015 will strive to achieve practical use for the automotive sector, and in 2020 the implementation of mass production” (Sewa). The company is in the security verification work, the critical period, in the nail prick test and forced to exert the pressure tests were not 60V fever and other issues. Temperature characteristics have also reached a lithium-ion rechargeable inspiron 2500 battery , latitude cpx of the same level. As another practical difficulties, the company also mentioned the cost of components. The future of the company to consider abandoning the current gold-plated electrodes used by the Ministry of gold, metallic materials at low prices instead. But also intends to replace the solid polymer materials, low-priced generic product, no longer using current high fluorine resin, and strive to ensure equal performance.
