Abstract: Disclosed is a lithium battery including a silicon negative electrode, a lithium mixed metal oxide positive electrode, a separator disposed between the negative and positive electrodes to define a reservoir region, an electrolytic solution filled in the reservoir region, and a sealant structure wrapped around the silicon negative electrode, the lithium mixed metal oxide positive electrode, the separator, and the electrolytic solution. The electrolytic solution includes an organic solvent, a lithium salt, and an additive. The additive includes a maleimide compound and vinylene carbonate. The silicon negative electrode of the lithium battery employing the described electrolytic solution has higher cycle efficiency and longer operating lifespan.

Abstract: Disclosed is an electrolytic solution including an organic solvent, a lithium salt, and an additive. The additive includes maleimide compound and vinylene carbonate. The maleimide compound can be maleimide, bismaleimide, polymaleimide, polybismaleimide, maleimide-bismaleimide copolymer, or combinations thereof. The lithium battery employing the described electrolytic solution has a higher capacity of confirmation, higher cycle efficiency, and longer operational lifespan.

Abstract: A lithium ion secondary battery includes LiFePO4 as a major component of the positive electrode active material. In order to implement the high rate capability with 10C/1C rate larger than 80%, the invention designs a positive electrode on a current collector with a ratio (A/t) of coating area to coating thickness greater than 1.2×106 (mm) and uses more than one tab on the current collector. The design of the invention can be applied to other active materials with low conductivity as the positive electrode for lithium ion battery.

Abstract: An anode material of a lithium secondary battery. The anode material includes a plurality of silicon particles, each silicon particle comprising a silicon core covered by a coating layer containing at least one metal oxide, preferably TiO2, ZrO2, or a combination thereof. The invention also provides a method of fabricating the anode material using chemical vapor deposition or sol-gel process.

Abstract: Antimagnetic shielding case structure made of a very thin metal sheet or film. When manufactured, the antimagnetic shielding case is placed in a predetermined position in the mold for molding the insulating case of a product. When a material is injected into the mold and molded, the antimagnetic shielding case is simultaneously formed in a predetermined position on outer face of inner face of the insulating case and integrally connected with the insulating case without protruding from the surface thereof. The metal sheet or film serves to provide an antimagnetic and isolative effect.