Other

University-industry Cooperation Group of Kyung Hee University

Kmw Inc

Korea Electrotechnology Research Institute

Samsung Electronics Co., Ltd.

Mie University

Park, Min-sik

Min-Sik Park

Duk Yong Kim

Young-Chan Moon

Dong-Joon Lee

Jeong Hee Choi

Chang-Woo Yoo

Sang Min Lee

Myong-Sik Lee

Myung-Hoon Kim

Chul Ho Lee

Jin-Hwan Park

Jun-Young Mun

Yoon-Sok Kang

Kyu-Sung Park

Dong-Min Im

Sang-Bok Ma

The present invention provides a method for preparing an anode active material for a nonaqueous lithium secondary battery, comprising the steps of: preparing a carbon-based material; forming a precursor coating layer comprising Me and A (wherein A is O or S) on the surface of the carbon-based material; supplying a P precursor to the precursor coating layer of the carbon-based material; and converting at least a part of the precursor coating layer into a compound represented by MeP(wherein x1>0 and y1>0) by the reaction of the precursor coating layer and the P precursor, thereby forming a phosphide coating layer, wherein Me is at least one type of the same metal element selected from among Mo, Ni, Fe, Co, Ti, V, Cr, Nb and Mn.

Anode active material comprising metal phosphide coating on surface of carbon material, preparation method therefor, nonaqueous lithium secondary battery comprising anode active material, and manufacturing method therefor

The present invention discloses a base station, the size of which is reduced and which is to be adopted in a mobile communication system. The disclosed small base station includes: a polyhedral housing; an antenna unit disposed on the widest surface of the outer surface of the housing; a first board arranged on any outer surface of the housing; and two or more boards which are arranged in an upright state with the first board and which are arranged to face three or more outer side surfaces of the housing, respectively.

Small base station for mobile communication system

The invention allows two single-seat bicycles to be connected to each other to be converted into a multi-seat bicycle. A fixed tube (), in the center of which a fixed shaft is inserted, is attached to a head tube () of a frame (). A top tube () supported by the fixed shaft is relatively pivotally installed on the head tube (). The fixed tube () and the top tube () can be connected and disconnected from each other by clutch means (). In the clutch means () are formed a pivot path for defining the un-clutched state and a closed path for defining the clutched state. The clutch means () is held at connected and disconnected positions by a position fixation member. Pivoting of the top tube () relative to the fixed tube () and the operation angle of a handle are limited by a synchronizer.

Bicycles that can be connected to each other

Growing community of inventors

Gyeonggi-do, South Korea

Min-Sik Park