Deposit morphology of the zinc recovery by electrodeposition from the spent Zn-MnO2 batteries

被引：20
|
作者：
Freitas, MBJG [1 ]
de Pietre, MK [1 ]
机构：
[1] Univ Fed Espirito Santo, Dept Quim, Lab Electroquim Aplicada, BR-29060900 Vitoria, ES, Brazil
来源：
JOURNAL OF POWER SOURCES | 2005年 / 143卷 / 1-2期
关键词：
recycling; zinc recovery; spent battery; zinc electrochemical recycling;
D O I：
10.1016/j.jpowsour.2004.11.027
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：
Electrochemical recovery of zinc from spent Zn-MnO2 batteries has been developed. Deposit morphology and charge efficiency depends on current density. A smooth deposit is formed for a current density equal to 50.0 mA cm(-2), while a porous deposit is formed for a current density equal to 10.0 mA cm(-2). It was observed that pore size decreases with the increase in current density. In contrast, charge efficiency reaches up to 85.0% for a current density equal to 10.0 mA cm(-2), and decreases with further increase in current density. Potassium, sulphur, and oxygen are adsorbed onto the zinc deposit. Zinc recovery was analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：270 / 274
页数：5
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