以ITO靶材和硅基异质结（HJT）太阳电池为研究对象,通过建立理论计算模型和实验测试的方法,对ITO靶材和HJT太阳电池的元素成分及含量进行计算和验证。采用湿法冶金工艺对其中的金属铟浸出并分离提纯,并对比影响金属铟回收的因素。结果表明：ITO靶材中金属铟含量理论计算模型与实验测试结果一致,通过盐酸浸出、Zn粉置换,可获得95.56%纯度的海绵铟。在此实验基础上进行工艺优化,回收HJT太阳电池的银、铟金属,可获得较高的回收率和良好的经济效益。
Abstract
The elemental composition and content of ITO targets and crystalline silicon heterojunction （HJT） solar cells were calculated and verified by combining theoretical calculation models and experimental tests. Immediately, the hydrometallurgical process were used to leaching and purifying metal indium and the effect of different parameters on the recovery were compared. The results show that the theoretical calculation model of metal indium content in ITO target is consistent with the experimental test results, and 95.56% purity of indium sponge can be obtained by hydrochloric acid leaching and Zn powder replacement. On the basis of this experiment, process optimization was carried out to recover silver and indium metals from HJT solar cells, by which high recovery rate and good economic benefits can be obtained.
关键词
铟 /
异质结太阳电池 /
湿法冶金技术 /
资源回收 /
浸出
Key words
indium /
heterojunction solar cells /
hydrometallurgy /
resource recovery /
leaching
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参考文献
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基金
国家重点研发计划（2018YFB1500600）; 中央高校基本科研业务费专项基金（B200202227）; 新能源与储能运行控制国家重点实验室（中国电力科学研究院有限公司）开放基金（NYB51202101990）
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