Effect of preparation parameters on electrolytic behaviour of turbostratic nickel hydroxide

被引：25

作者：

Acharya, R ^{[1
]}

Subbaiah, T ^{[1
]}

Anand, S ^{[1
]}

Das, RP ^{[1
]}

机构：

[1] Reg Res Lab, Hydro & Electro Met Div, Bhubaneswar 751013, Orissa, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2003年 / 81卷 / 01期

关键词：

nickel hydroxide; X-ray diffraction; nickel sulphate; urea; electrolytic properties;

D O I：

10.1016/S0254-0584(03)00091-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Turbostratic nickel hydroxide samples were prepared by neutralising nickel sulphate solution with urea. Initial nickel concentration and urea to nickel ratio were the two parameters changed for studying their effect on physico-chemical and electrolytic properties of nickel hydroxide. Depending on the preparation conditions the electrolytically active component of nickel hydroxide varied between 63 and 91 % with respect to the theoretical value of 456mAh/g Ni. The variation in discharge capacity has been explained in terms of degree of hydration, intercalated anions and nature of phases present under various experimental conditions. The turbostratic nickel hydroxide obtained from a dilute solution (0.085 M), having a poorly crystalline nature and fine particles of nearly spherical nature with <5 mum diameter, exhibited a maximum discharge capacity of 415 mAh/g Ni. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：45 / 49

页数：5

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