Violet tungsten oxide may be applied for producing window heat insulation film, which mainly reflects its thermal insulation properties. Violet tungsten oxide powder also has good chemical activity, small internal resistance and excellent lithium ion diffusion, so that it can be used as a negative electrode material for ultra-high speed charge and discharge lithium batteries.
Such ultra-high speed charge and discharge lithium battery using violet tungsten oxide as negative electrode material is characterized in that the power density and the energy density can be increased to two to three times that of the double layer capacitor. Energy density is also improved when it is compared to lithium ion capacitors, which is designed to increase the energy density of EDLC. In the field of capacitors, lithium ion secondary batteries are not suitable for high-output applications due to insufficient output power and development difficulties. It is the development of ultra-high speed charge and discharge lithium battery that will make it possible to be used in the field of high-output power applications. It also means that tungsten materials will no longer be just a bystander in the field of lithium-ion battery manufacturing.
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