Sumitomo Chemical Company, Limited

Tanaka Chemical Corporation

Masashi Inoue

Hiroyuki Ikawa

Tatsuya Naito

Yusuke Maeda

Provided are a lithium composite metal compound having excellent cycle characteristics in the case of being used as battery materials, a positive electrode active material for a lithium secondary battery using the same, a positive electrode using the same, and a lithium secondary battery using the same. The lithium composite metal compound is represented by Composition Formula (I), in which physical property values of pores that are obtained from measurement of nitrogen adsorption and desorption isotherms at a liquid nitrogen temperature satisfy requirements (1) and (2).

Lithium composite metal compound, positive electrode active material for lithium secondary battery, positive electrode for lithium secondary battery, lithium secondary battery, and method for manufacturing lithium composite metal compound

In a green honeycomb molded body including a columnar body of the green honeycomb molded body in which a plurality of hexagonal cells mutually partitioned by partition walls are open at an end surface of the columnar body, a center closing jig is inserted into a part of a plurality of cells at the center of the end surface to join partition walls to each other using the center closing jig, thereby closing the cells at the center of the end surface and the outer periphery of the end surface including the plurality of cells is pressed by a cylindrical outer periphery closing jig having an inner peripheral surface with the inner diameter being continuously reduced from one end to the other end, thereby collapsing the cells at the outer periphery of the end surface to close the cells at the outer periphery of the end surface.

Growing community of inventors

Niihama, Japan

Masashi Inoue