Production of nickel powder by the titanium redox method and its application to conductive materials

An attempted was made to produce nickel powder in an electroless nickel plating bath using Ti (III) ions as the reducing agent. The crystallite diameter of the obtained nickel powder was about 1.7 nm. This nickel powder magnetically formed chain-like clusters, because the primary particles were small. The resistance of the chain-like powder paste-applied sheets was less than about 1/8 compared to that of the existing spherical powder-applied sheets. To exhibit the same resistance as the spherical nickel powder-applied sheets, the amount of nickel can be markedly reduced by applying the chain-like nickel powder.