Lg Chem, Ltd

Korea Institute of Science and Technology

Sj Materials Co., Ltd.

Mi Kyeong Lee

Yong Ju Lee

Eun Kyung Kim

Pyung Soon Kim

Jung Woo Yoo

Han Min Jung

Won Kyung Sung

Han Ho Lee

Mi Rim Lee

Dong In Park

Byoung Man Bang

Ji Hyun Yoon

In Su Kang

Il Kyo Jeong

Seoung Woo Lee

Chang Rae Lee

Provided are a porous silicon-based anode active material including porous SiOparticles (0&#x2264;x&#x3c;2) having surfaces coated with an oxide layer, a method of preparing the same, and a lithium secondary battery including the porous silicon-based anode active material. Since the anode active material includes an oxide layer formed on the porous SiOparticles (0&#x2264;x&#x3c;2), a reactivity between the anode active material and an electrolyte solution may be reduced and, as a result, an electrical short circuit in an electrode may be minimized. Also, since a plurality of pores is included in surfaces or the surfaces and inside of the SiOparticles, a thickness change rate of the electrode generated during charge and discharge of a secondary battery may be reduced and lifetime characteristics may be improved.

Porous silicon-based anode active material, method for preparing the same, and lithium secondary battery comprising the same

Provided are a porous silicon-based particle including a silicon (Si) or SiO(0&#x3c;x&#x3c;2) particle, wherein the particle includes a plurality of nonlinear pores, and the nonlinear pores are formed as open pores in a surface of the particle, and a method of preparing the porous silicon-based particles. Porous silicon-based particles according to an embodiment of the present invention may be more easily dispersed in an anode active material slurry, may minimize side reactions with an electrolyte, and may reduce volume expansion during charge and discharge. Also, according to an embodiment of the present invention, the shape, form, and size of pores formed in the porous silicon-based particle may be controlled by adjusting the type of a metal catalyst, the concentration of the catalyst, and etching time.

Porous silicon-based particles, method of preparing the same, and lithium secondary battery including the porous silicon-based particles

A DBMS-based knowledge extension and inference service method recorded on a computer-readable medium includes creating knowledge represented as a triple by using ontology schemas and instances (first step); receiving the knowledge and extending the knowledge by using a knowledge extension rule (second step); and providing an inference service by using the extended knowledge, converting a user query, and processing the query (third step). Further, the third step includes receiving and converting a user query to create the converted query (st step); determining whether the query is a previously-input query (nd step); receiving the converted query and the determination result to create a query result (rd step); receiving the query result of therd step and performing post-processing to create a post-processing result (th step); and creating a message and protocol suitable for a user interface by using the post-processing result and then presenting an inference result.

DBMS-based knowledge extension and inference service method recorded on computer-readable medium

A system for managing outcome information based on URI comprises an outcome information managing unit that registers and manages outcome information; a URI managing unit that is connected to the outcome information managing unit and imparts a URI to the outcome information through a URI server so as to manage the outcome information; and a knowledge extending unit that is connected to the outcome information managing unit and the URI managing unit and extends knowledge by using an inference rule for an inference service based on the Semantic Web.

System and method for managing outcome information based on URI data wherein knowledge is extended by using an inference rule for an inference service based on the Semantic Web

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Gyeongsangbuk-do, South Korea

Mi Kyeong Lee