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 10 C/1 C 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: 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 10 C/1 C 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: 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: The security system for a protected object comprises a first wireless module, a central controller, and a remote authorization server. The first wireless module and the central controller are disposed in the protected object. The first wireless module transmits an authorization request with an authorization ID (identification) of the protected object, and receives an authorization response. The central controller is coupled to the first wireless module, and allows the protected object to operate in accordance with the authorization response. The remote authorization server, responsive to the authorization request, generates the authorization response from an authorization record thereof in accordance with the authorization ID, and transmits the authorization response.

Abstract: A phosphide composite material including at least primary particles is disclosed. The primary particles include a transition metal phosphide and a coating layer covering the transition metal phosphide. The capacity of the phosphide composite material is higher than carbon, and the structural thereof is better than the transition metal phosphide. Thus, the phosphide composite material is suitable for serving as anode material of lithium ion cell.

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: A security system. The security system for a protected object comprises a first wireless module, a central controller, and a remote authorization server. The first wireless module and the central controller are disposed in the protected object. The first wireless module transmits an authorization request with an authorization ID (identification) of the protected object, and receives an authorization response. The central controller is coupled to the first wireless module, and allows the protected object to operate in accordance with the authorization response. The remote authorization server, responsive to the authorization request, generates the authorization response from an authorization record thereof in accordance with the authorization ID, and transmits the authorization response.

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.