Co-substituted Ni(OH)2 samples were prepared by homogeneous precipitation from nickel nitrate solution in presence of urea,and their structures and electrochemical performance were investigated in order to improve the electrochemical performance of Ni(OH)2 electrodes.

The spherical Ni(OH)2 particles were synthesized by controlled crystallization method in a continuous stirring tank reactor, their outer and interior structures were characterized by electronic microscope technologies, and the crystallization growth mechanisms and the effects of Ostwald ripening during growth processes were discussed.

Study on structural characteristics of spherical Ni(OH)_2 electrode active materials;

The spherical Ni(OH)_2 is synthesized with controlled crystallization method in a continuous stirring tank reactor.

The microstructures of spherical Ni(OH)_2 was studied, and the preparation, the structure, and the relationships between them were carefully and systematically discussed.

Preparation of the high-density,high-activity,and spherical nickel hydroxide and its performance controll;

Taking nickel compounds as main raw materials and using new technology of ligand catalytic liquid phases precipitation,spherical nickel hydroxide of nanometer is producted.

The poor high-temperature performance of the spherical nickel hydroxide becomes the main reason for limitation of use as the positive electrode active material in MH-Ni battery, especially for the vehicle power.

Microstructures of spherical β-nickel hydroxides and their thermal decomposition characteristics;