Sumitomo Metal Mining Company, Ltd.

Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Toshiki Maeda

Manabu Yamada

Satoru Suzuki

Hirofumi Iisaka

Fujio Makuta

A lithium-nickel complex oxide material for active material for positive electrode of a lithium secondary battery is provided and expressed by the general formula Li(NiCo)MO(where, 0.98&#x2266;x&#x2266;1.10, 0.05&#x2266;y&#x2266;0.4, 0.01&#x2266;z&#x2266;0.2, M=at least one element selected from the group of Al, Zn, Ti and Mg), wherein according to Rietveld analysis, the Li site occupancy rate for the Li site in the crystal is 98% or greater, and the average particle size of the spherical secondary particles is 5 &#x3bc;m to 15 &#x3bc;m, and wherein the difference in specific surface area between before and after the washing process is 1.0 m/g or less.

Active material for positive electrode of lithium secondary battery

A lead-free resistance paste and a lead-free resistor that is formed with the resistance paste and has a high resistance value and excellent electric characteristics are disclosed. The resistance paste is substantially made of electrically conductive particles, glass frit and an organic vehicle, wherein the electrically conductive particles are made of iridium dioxide (IrO) alone, or of iridium dioxide and ruthenium dioxide (RuO) which has an average particle diameter of 1.0 &#x3bc;m or less, and the glass frit is glass frit that has an average particle diameter of 5 &#x3bc;m or less and does not contain lead such as borosilicate glass.

Resistance paste and resistor

Growing community of inventors

Niihama, Japan

Toshiki Maeda