In this study the samples were synthesized from a 2234 stoichiometric composition in order to obtain a large amount of pure 2212-BSCCO. The effects of Ni substitution on the properties of Bi-based Bi 2−x Ni x Sr 2 Ca 1 Cu 2 O y superconductor with x = 0, 0.05, 0.1 and 0.2 were investigated by means of X-ray analysis (XRD), DC electrical resistivity and magnetic-hysteresis loop measurements. It has been found that the T c (onset) transition temperature does not change independently of Ni content. In addition, J c values of the samples were calculated from the hysteresis loop measurement by using Bean's model, showing that J c decreases with increasing Ni substitution.