Recycling alloy scrap and CO2 by paired molten salt electrolysis
文献类型：期刊论文
| 作者 | Chen, Xiang1; Zhao, Yan1; Sun, Yuan3; Wang, Long1,3; Xie, Hongwei1; Qu, Jiakang1; Gao, Shuaibo2; Wang, Dihua2; Yin, Huayi1,2 |
| 刊名 | SUSTAINABLE ENERGY & FUELS
 |
| 出版日期 | 2022-10-05 |
| 页码 | 11 |
| ISSN号 | 2398-4902 |
| DOI | 10.1039/d2se00893a |
| 通讯作者 | Yin, Huayi(yinhuayi@whu.edu.cn) |
| 英文摘要 | Reclaiming valuable materials from retired alloys and CO2 in an eco-friendly and efficient manner is critically important to meet the urgent need for strategical metals and curb climate change. Herein, we report a molten salt electrolyzer with an alloy scrap anode along with a CO2 reduction cathode for co-recycling alloy scrap and CO2. In molten CaCl2-NaCl-CaCO3 at 700 degrees C, the alloy scrap is converted to porous oxide scale at the anode and CO2 is reduced to carbon at the cathode. The Cl- in the molten salt prevents the passivation and allows the continuous oxidation of the alloy scrap anode, and CO32- was electrochemically reduced to provide O2- while generating carbon. The average particle size of the anode oxides is about 8 mu m and the cathode carbon is amorphous structure. Furthermore, the obtained oxides can be converted to water-soluble sulfates by sulfation roasting with recovery rates of over 92% for both Co and Ni. More importantly, the paired electrolysis method improves energy efficiency by repurposing both waste alloy scrap and CO2. This paper provides a promising and green strategy to recover valuable metals from various alloy scrap and C/CO from carbon dioxide to close both metal and carbon cycles. |
| 资助项目 | Fundamental Research Funds for the Central Universities[N2025035] ; Fundamental Research Funds for the Central Universities[N2025034] ; National Natural Science Foundation of China[52031008] ; National Natural Science Foundation of China[21673162] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000864272400001 |
| 资助机构 | Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176127]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yin, Huayi |
| 作者单位 | 1.Northeastern Univ, Sch Met, Key Lab Ecol Met Multimetall Mineral, Minist Educ, Shenyang 110819, Peoples R China 2.Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Xiang,Zhao, Yan,Sun, Yuan,et al. Recycling alloy scrap and CO2 by paired molten salt electrolysis[J]. SUSTAINABLE ENERGY & FUELS,2022:11. |
| APA | Chen, Xiang.,Zhao, Yan.,Sun, Yuan.,Wang, Long.,Xie, Hongwei.,...&Yin, Huayi.(2022).Recycling alloy scrap and CO2 by paired molten salt electrolysis.SUSTAINABLE ENERGY & FUELS,11. |
| MLA | Chen, Xiang,et al."Recycling alloy scrap and CO2 by paired molten salt electrolysis".SUSTAINABLE ENERGY & FUELS (2022):11. |
入库方式： OAI收割
来源：金属研究所
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