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

页码：270 / 274

页数：5

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