Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using a positive electrode containing the positive electrode active material. More particularly, the present invention relates to a positive electrode active material that is able to solve a problem of increased resistance according to an increase in Ni content by forming a charge transport channel in a lithium composite oxide and a lithium secondary battery using a positive electrode containing the positive electrode active material.

Abstract: An apparatus and method for manufacturing iron-based mixed powder with excellent flowability is provided. The apparatus includes a hopper which stores and discharges a main raw material of iron-based powder, a transport means which transports the main raw material of iron-based powder discharged from the hopper, a magnetizing means that applies magnetic force to the main raw material transported and falling from the transport means to process the main raw material of iron-based powder into a main raw material bundle in a crumbly type in which the main raw material of iron-based powder is agglomerated with each other, a first mixer in which the main raw material bundle in a magnetized state and an auxiliary raw material of iron-based powder are loaded and mixed while being rotated and transported, and a second mixer in which a first iron-based mixed powder is mixed while being rotated and transported.

Abstract: An automobile cable socket. The automobile cable socket including a first socket member that is disposed to surround the first cable and includes a plurality of sawtooth portions formed on an external surface thereof in a direction in which the first cable extends, a second socket member coupled to the first socket member and including an engaging portion, a spring installed outside of the second socket member, and a position fix member that is disposed between the second socket member and the spring, releases engagement between the engaging portion of the second socket member and the plurality of sawtooth portions of the first socket member by pressing the spring, and engages the plurality of sawtooth portions with the engaging portion when the spring is restored to an original position.

Abstract: An automobile cable socket. The automobile cable socket including a first socket member that is disposed to surround the first cable and includes a plurality of sawtooth portions formed on an external surface thereof in a direction in which the first cable extends, a second socket member coupled to the first socket member and including an engaging portion, a spring installed outside of the second socket member, and a position fix member that is disposed between the second socket member and the spring, releases engagement between the engaging portion of the second socket member and the plurality of sawtooth portions of the first socket member by pressing the spring, and engages the plurality of sawtooth portions with the engaging portion when the spring is restored to an original position.