580 results about "Crystalline particle" patented technology

The invention discloses a long- cycle and high-safety power lithium ion battery positive electrode material and a preparation method thereof. The positive electrode material can be shown as a general formula LiNi<(1-a-b-c)>CoMnM<c>O2.xLiM<1>O<y>, wherein a is greater than 0 and less than 1, b is greater than 0 and less than 1, a+b+c is greater than 0 and less tan 1, x is greater than 0 and less than 0.1, and y is greater than 1 and less than 5; LiNi<(1-a-b-c)>CoMnM<c>O2 is a primary active crystalline particle of the positive electrode material, and is a lithiated composite oxide composed of nickel cobalt manganese and doping element M; and the LiM<1>O<y> is a coating layer coating crystal boundary of the primary active crystalline particle and surface of a polycrystalline secondary particle. The positive electrode material provided by the invention has high stability of crystalline main body, surface and crystal boundary, has good compatibility with electrolyte and is not liable to generate side reaction. The material provided by the invention is used for batteries, has long cycle life, high over-charging resisting capability, good high temperature and high voltage performance and high integral safety, and is particularly suitable for power batteries.

Disclosed is a thin film transistor which includes, over a substrate having an insulating surface, a gate insulating layer covering a gate electrode; a semiconductor layer which functions as a channel formation region; and a semiconductor layer including an impurity element imparting one conductivity type. The semiconductor layer exists in a state that a plurality of crystalline particles is dispersed in an amorphous silicon and that the crystalline particles have an inverted conical or inverted pyramidal shape. The crystalline particles grow approximately radially in a direction in which the semiconductor layer is deposited. Vertexes of the inverted conical or inverted pyramidal crystal particles are located apart from an interface between the gate insulating layer and the semiconductor layer.

An aluminum alloy forged material for automotive vehicles comprises 0.6ˆ¼1.2 mass% of Mg, 0.7ˆ¼1.5 mass% of Si, 0.1ˆ¼0.5 mass% of Fe, 0.01ˆ¼0.1 mass% of Ti, 0.3ˆ¼1.0 mass% of Mn, at least one of 0.1ˆ¼0.4 mass% of Cr and 0.05ˆ¼0.2 mass% of Zr, a restricted amount of Cu that is less than or equal to 0.1 mass%, a restricted amount of Zn that is less than or equal to 0.05 mass %, a restricted amount of H that is less than or equal to 0.25 ml in 100g A1 and a remainder of A1 and inevitably contained impurities, and the material includes precipitated crystalline particles among which the largest one has a maximum equivalent circle diameter equal to or less than 8 µm and an area ratio of the precipitated crystalline particles is equal to or less than 3.6%.