Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle. a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.

Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery comprising the same, and more specifically, to a positive electrode active material including a lithium composite oxide containing at least nickel and titanium, wherein the titanium is present in an oxide form in at least a portion of the surface of the lithium composite oxide at the same time as being doped in the lithium composite oxide, and thus it is possible to simultaneously improve the output efficiency and high-temperature lifetime characteristics (high-temperature cycle capacity retention rate) of a lithium secondary battery using the positive electrode active material, and a lithium secondary battery including the same.

Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.

Abstract: The present invention relates to a positive electrode active material which makes it possible to improve the electrochemical properties and stability of a positive electrode active material including a lithium composite oxide by adjusting the direction of a concentration gradient of a metal element of the lithium composite oxide, and a lithium secondary battery using a positive electrode including the positive electrode active material.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a bimodal-type positive electrode active material that includes a first lithium composite oxide which is a small particle and a second lithium composite oxide which is a large particle, which have different average particle diameters, thereby improving an increasing deviation of an average particle diameter and degraded impedance and lifetime characteristics due to excessive calcination for any one of the small and large particles during simultaneous calcination, a positive electrode including the same, and a lithium secondary battery using the same.

Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.

Abstract: A dust sensor apparatus having flow rate control function for securing reliability of measurement of the dust sensor by constantly maintaining flow rate of the air flowing into the dust sensor for measuring concentration of dust in the internal of a vehicle, may include a blow motor configured for controlling flow rate of the air to be packaged in the dust sensor for measuring concentration of dust in the internal of a vehicle such that flow rate of the air flowing into the dust sensor is maintained constantly.

Abstract: A vehicular dust sensor may include a case having an inner space, a light source module disposed in the inner space of the case, and irradiating an air passage with light, the air passage being provided in the light source module for introduction and pass of air and dust, a condensing lens to collect light, emitted from the light source module and scattered by dust in air in the air passage, a light receiving module receiving the scattered light collected by the condensing lens to output an electric signal corresponding to a dust concentration, and an inner housing disposed in the inner space of the case to form the air passage.

Abstract: A vehicular dust sensor may include a case having an inner space, a light source module disposed in the inner space of the case, and irradiating an air passage with light, the air passage being provided in the light source module for introduction and pass of air and dust, a condensing lens to collect light, emitted from the light source module and scattered by dust in air in the air passage, a light receiving module receiving the scattered light collected by the condensing lens to output an electric signal corresponding to a dust concentration, and an inner housing disposed in the inner space of the case to form the air passage.