牛志睿,辛宝平,庞康,李卓珏,赵姣姣,张咪.废旧锌锰电池锌锰元素的分析表征[J].环境科学学报,2015,35(2):564-569
废旧锌锰电池锌锰元素的分析表征
- Characterization of Zn and Mn in spent Zn-Mn batteries
- 基金项目：国家自然科学基金(No.21277012);陕西省高水平大学专项资金项目(No.2013SXTS03);国家级大学生创新创业训练计划项目(No.201310719014)
- 牛志睿
- 1. 延安大学石油工程与环境工程学院, 延安 716000;2. 北京理工大学化工与环境学院, 北京 100081
- 辛宝平
- 北京理工大学化工与环境学院, 北京 100081
- 庞康
- 延安大学石油工程与环境工程学院, 延安 716000
- 李卓珏
- 延安大学石油工程与环境工程学院, 延安 716000
- 赵姣姣
- 延安大学石油工程与环境工程学院, 延安 716000
- 张咪
- 延安大学石油工程与环境工程学院, 延安 716000
- 摘要：为了解废旧锌锰电池的锌锰元素特征,以废旧碱性(A-A)和酸性(Zn-C)电池为研究对象,采用化学分析、BCR连续萃取技术、SEM-EDS和XRD等手段对拆分的电池正、负电极材料中的锌锰元素进行了分析表征.实验表明:废旧碱性(A-A)电池中Mn、Zn分别占到正极材料质量的49.2%、10.3%,以ZnMn2O4四方体锌锰矿结构晶体存在;Zn占负极材料的52.5%,以ZnO晶体存在;废旧酸性(Zn-C)电池混合电解质中,Mn、Zn各占41.8%和25.2%,分别以ZnMn2O4、MnO2、Zn5(OH)8Cl2·H2O和Zn(NH3)2Cl2等晶体存在.BCR处理结果显示,A-A电池正极和Zn-C电池混合电解质中,Mn主要为残渣态较难酸释,而A-A电池负极中的Zn易于回收.
- Abstract：The aim of this paper is to characterize Zn and Mn of spent alkaline and zinc-carbon batteries by using chemical analysis, BCR analysis, SEM-EDS and XRD analysis after having dismantled the batteries into the anode and cathode components. Experimental results have shown that, Mn and Zn accounted for 49.2% and 10.3% of the mass of anode material in spent alkaline batteries respectively, and they were present as hetaerolite (ZnMn2O4) in the tetragonal hausmannite-type structures. Zn accounted for 52.5% in the cathode material in the form of ZnO. In contrast, in spent zinc-carbon batteries, Mn and Zn accounted for 41.8% and 25.2% of the mass of hybrid electrolytes, and they existed in the form of ZnMn2O4, MnO2,Zn5(OH)8Cl2·H2O and Zn(NH3)2Cl2. BCR experiment indicated that Mn of anode material in alkaline batteries and hybrid electrolytes in zinc-carbon batteries were present almost entirely as residual which was difficult to extract by using acidolysis method; however, Zn of the cathode material in A-A batteries was liable to recycle.
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