Industrial Technology Research Institute

Mo-Hua Yang

Nae-Lih Wu

Hung-Chun Wu

Ching-Yi Su

Bing-Ming Lin

Ping-Hsun Hsieh

Jing-Pin Pan

Yuh-Fwu Chou

Hsin-Hsien Yeh

Horng-Yuan Wen

Ying-Chang Hung

Nae-Lih c/o Department Of Chemical Engineering Wu

A lithium ion secondary battery includes LiFePOas 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&#xd7;10(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.

High rate capability design of lithium ion secondary battery

A lithium ion secondary battery includes LiFePOas 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&#xd7;10(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.

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.

Security system

Growing community of inventors

Hsinchu, Taiwan

Mo-Hua Yang