Abstract: A negative electrode active material for a secondary battery includes a negative electrode active material particle that includes a first object including a silicon oxide, and a second object including at least one of copper, a copper compound, tungsten, or a molybdenum oxide and attached to a surface of the first object. A Raman spectrum of the negative electrode active material particle has a maximum peak within a range of greater than or equal to 470 cm?1 and less than or equal to 490 cm?1. An XRD spectrum thereof has a peak within a range of 37°±1° and a peak within a range of 44°±1°, has a peak within a range of 40°±1°, or has a peak within any one of a range of 23°±1°, a range of 25°±1°, a range of 37°±1°, a range of 41°±1°, a range of 54°±1°, or a range of 60°±10.

Abstract: A conductive material including a plurality of particles, the plurality of particles including at least a first particle having: a layered material including one or plural layers, wherein the one or plural layers include a layer body represented by MmXn (where M is at least one metal of Group 3, 4, 5, 6, or 7, X is a carbon atom, a nitrogen atom, or a combination thereof, n is not less than 1 and not more than 4, and m is more than n but not more than 5), and a modifier or terminal T (where T is at least one selected from the group consisting of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, and a hydrogen atom) existing on a surface of the layer body; and a metal material at least partially covering the layered material.

Abstract: A conductive material including a plurality of particles, the plurality of particles including at least a first particle having: a layered material including one or plural layers, wherein the one or plural layers include a layer body represented by MmXn (where M is at least one metal of Group 3, 4, 5, 6, or 7, X is a carbon atom, a nitrogen atom, or a combination thereof, n is not less than 1 and not more than 4, and m is more than n but not more than 5), and a modifier or terminal T (where T is at least one selected from the group consisting of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, and a hydrogen atom) existing on a surface of the layer body; and a metal material at least partially covering the layered material.

Abstract: A steering column device includes a cylindrical inner tube, and a cylindrical outer tube which is fixed to the inner tube by being externally fitted to slide in an axial direction of the inner tube and being elastically reduced in diameter, wherein the outer tube is configured to have a first slit and a second slit to be reduced in diameter. A stress alleviation portion is provided at the second slit. A contour shape of the stress alleviation portion is set to include an elliptic arc-shaped portion of which a direction of a major axis is a direction intersecting the second slit.

Abstract: A steering column device includes a cylindrical inner tube, and a cylindrical outer tube which is fixed to the inner tube by being externally fitted to slide in an axial direction of the inner tube and being elastically reduced in diameter, wherein the outer tube is configured to have a first slit and a second slit to be reduced in diameter. A stress alleviation portion is provided at the second slit. A contour shape of the stress alleviation portion is set to include an elliptic arc-shaped portion of which a direction of a major axis is a direction intersecting the second slit.