Abstract: A positive electrode active material including a first lithium composite oxide particle including a secondary particle formed by aggregation of one or more primary particles, and a coating oxide occupying at least a part of at least one of surfaces of the secondary particle, grain boundaries between the primary particles, or surfaces of the primary particles, the positive electrode active material satisfying an equation of 1.3?a/b?3.0, wherein a represents a max peak intensity at 2theta=44.75° to 44.80° and b represents a max peak intensity at 2theta=45.3° to 45.6° in X-ray diffraction (XRD) analysis using Cu K? radiation.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using the same, and more particularly, to a bimodal-type positive electrode active material including a first lithium composite oxide as a small particle and a second lithium composite oxide as a large particle, which improves the transport ability of lithium ions by controlling the morphology or crystal structure of the small particle included in the positive electrode active material, and further alleviates or prevents the early deterioration or shortened lifetime of the bimodal-type positive electrode active material, caused by the small particle, by increasing the particle stability of the small particle, and a lithium secondary battery using the same.

Abstract: Provided is an apparatus of an inhalation type for stocking a wafer at a ceiling and an inhaling type wafer stocking system having the same including a stocking system having a shelf that is fixed to a ceiling and supports a container in which a wafer is present; and an inhalation assembly that is installed in the stocking system so as to correspond to the shelf and is configured so as to inhale gas that leaks from the container.

Abstract: Provided is an apparatus of an inhalation type for stocking a wafer at a ceiling and an inhaling type wafer stocking system having the same including a stocking system having a shelf that is fixed to a ceiling and supports a container in which a wafer is present; and an inhalation assembly that is installed in the stocking system so as to correspond to the shelf and is configured so as to inhale gas that leaks from the container.