Electrochemical properties of the pasted nickel electrode using surface modified Ni(OH)(2) powder as active material

Nickel hydroxide powder was modified by immersing the mixture of nickel hyd roxide powder with cobalt compounds in an alkali solution or by chemical de position. Electrochemical properties of the pasted nickel electrodes consis ting of surface modified Ni(OH)(2) powder in a porous nickel substrate were studied. The results show that the active material utilization of the modi fied nickel electrodes greatly increases due to the uniform distribution of a Co(OH)(2) layer on the surface of the nickel hydroxide powder resulting in the improvement of the electrochemical, activity and conductivity, The E IS results show that the Co(OH)(2) layer decreases the charge-transfer resi stance and increases the active surface area of the nickel electrode. (C) 2 001 Elsevier Science B.V. All rights reserved.