Electrochemical recycling of the zinc from spent Zn-MnO2 batteries

被引：43

作者：

Freitas, MBJG ^{[1
]}

de Pietre, MK ^{[1
]}

机构：

[1] Univ Fed Espirito Santo, Dept Quim, Lab Eletroquim Aplicada, BR-29060900 Vitoria, ES, Brazil

来源：

JOURNAL OF POWER SOURCES | 2004年 / 128卷 / 02期

关键词：

electrochemical recycling; spent battery; zinc recovery; zinc;

D O I：

10.1016/j.jpowsour.2003.09.054

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, zinc from the spent Zn-MnO2 batteries is recycled. Ionic zinc is recovered from acidic or alkaline solutions using a galvanostatic technique. An optimum current density between 10.0 and 25.0 mA cm(-2) was obtained for recovery of ionic zinc from acidic solutions. The optimum current density is equal to 15.0 mA cm-2 for zinc electrodeposition from alkaline solution. The charge efficiency is 80.0% and decreases with increase of current density. In acidic solutions, hydrogen adsorption catalyse Zn2+ electrodeposition. In alkaline solutions, a parallel reaction of the hydrogen evolution inhibits zincate electrodeposition. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：343 / 349

页数：7

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