•  
  •  
 

Corresponding Author

Bo-rong WU

Abstract

The Ni(OH)2 cathode material of MH/Ni was doped by NiO,which behaves as a capacitor and can improve the charge-discharge rate capacity of Ni(OH)2.The electrochemical properties of Ni(OH)2 was characterized by charge-discharge curves and cyclic voltammetry.The results showed that the material had the best discharge property when doped by 5% NiO,and the discharge specific capacity could reach 310.1 mAh/g at 0.2 C rate and remianed 79.5% at 3 C rate.The difference oxidation and reduction potentials between the of the battery was 164 mV when the Ni(OH)2 was doped by 5% NiO,which showed a good cyclic property.

Keywords

MH/Ni batteries, NiO, Ni(OH)2, high rate charge-discharge

Publication Date

2010-02-28

Online Available Date

2010-02-28

Revised Date

2010-02-28

Received Date

2010-02-28

References

[1]Tarascon J M,Armand M.Issues and challenges facing rechargeable lithium batteries[J].Nature,2001,414:359-367.
[2]J Van Mierlo,Maggetto G,Lataire P.Which energy source for road transport in the future?A comparison of battery,hybrid and fuel cell vehicles[J].Energy Con-versation&Management,2006,47:2748-2760.
[3]Geng M,Northwood D O.Development of advanced re-chargeable Ni/MH and Ni/Zn batteries[J].Int J Hy-drogen Energy,2003;28:633-636.
[4]Ross D K.Hydrogen storage:The major technological barrier to the development of hydrogen fuel cell cars[J].Vacuum,2006,80:1084-1089.
[5]Graeme A Snook,Noel W Duffy,Anthony G,et al.Eval-uation of the effects of oxygen evolution on the capacity and cycle life of nickel hydroxide electrode materials[J].J Power Sources,2007,168:513-521.
[6]Wang X Y,Luo H,Yang H P,et al.Oxygen catalytic e-volution reaction on nickel hydroxide electrode modified by electroless cobalt coating[J].Int J Hydrogen Ener-gy,2004,29:967-972.
[7]Deabate S,Fourgeot F,Henn F.Electrochemical behav-iour ofβ(II)-Ni(OH)2/β(III)-NiOOH redox couple upon potentiodynamic cycling conditions[J].Electro-chim Acta,2006,51:5430-5437.
[8]Pralong V,Delahaye-Vidal A,Beaudoin B,et al.Electro-chemical behavior of cobalt hydroxide used as additive in the nickel hydroxide electrode[J].J Electrochem Soc,2000,147(4):1306-1313.
[9]Elumalai P,Vasan H N,Munichandraiah N.Electroc-hemical studies of cobalt hydroxide-an additive for nick-el electrodes[J].J Power Sources,2001,93:201-208.
[10]Ken-ichi Watanabe,Mitsuru Koseki,Naoaki Kumagai.Effect of cobalt addition to nickel hydroxide as a posi-tive material for rechargeable alkaline batteries[J].J Power Sources,1996,53:23-28.
[11]Wu Yong(吴勇),Yu Ye-fei(于叶飞),Wu Meng-qiang(吴孟强),et al.Application research of superca-pacitor to automobiles[J].Bus Technology and Re-search(客车技术与研究),2008,(1):11-14.

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.