Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Communications
Synthesis and Electrochemical Characteristics of Nickel Oxyhydroxide Positive Active Material for 3 Volt Class Lithium Secondary Cells
Junichi MARUTAHideki SASAKIHideo YASUDAMasanori YAMACHI
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JOURNALS OPEN ACCESS

2003 Volume 71 Issue 12 Pages 1099-1101

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Abstract

“Pure” β-NiOOH, a positive active material for 3 volt class lithium secondary cells, has been successfully prepared by ozonization process as an alkali-free synthetic method though electrochemical characteristics of nickel oxyhydroxide has been influenced by alkali species due to NiOOH1−xLix formation by ion-exchange side reaction in an organic electrolyte. The discharge curve of the NiOOH1−xLix electrode involved two potential plateaux corresponding to Ni(II)/Ni(III) and Ni(III)/Ni(IV) redox pairs. The positive electrode with this pure active material was found to show a monotonous potential variation in the discharge process.

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© 2003 The Electrochemical Society of Japan
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