| A new method for direct synthesis of Li2CO3 powders by membrane electrolysis | |
| Alternative Title | A new method for direct synthesis of Li_2CO_3 powders by membrane electrolysis |
| Pan XiJuan1; Zhang TingAn1; Dou ZhiHe1; Lyu GuoZhi1; Han XiuXiu1; Zhang JunJie1 | |
| 2018 | |
| Source Publication | RARE METALS
 |
| ISSN | 1001-0521 |
| Volume | 37Issue:8Pages:716-722 |
| Abstract | A new method for the direct synthesis of Li2CO3 powders by membrane electrolysis from LiCl solution is demonstrated in this paper, where a novel electrolysis system combining ventilation, agitation and loop filtration functions was reported. The aim of this work is to explore the effect of the starting concentration of LiCl on the phase and micromorphology of Li2CO3 crystals and thereafter to explore the mechanism of crystallization and grain growth law. Scanning electron microscopy (SEM) images indicate that the particles become irregular polycrystalline from well-defined flower-like and the micro-crystals change from lamellar to needle-like and subsequently to smaller globular granules, and the surface of the crystals becomes smooth with LiCl concentration increasing from 50 to 400 g center dot L-3. The crystalline phases of the different samples were characterized using powder X-ray diffraction (XRD) and the results prove that pure Li2CO3 crystals can be obtained in a single step by the electrolysis method. The particle size distributions show that both volume mean crystal sizes and the full width at half maximum (FWHM) decrease when the starting LiCl concentration increases from 50 to 300 g center dot L-3 and also decreases from 400 to 300 g center dot L-3. |
| Other Abstract | A new method for the direct synthesis of Li_2CO_3 powders by membrane electrolysis from LiCl solution is demonstrated in this paper, where a novel electrolysis system combining ventilation, agitation and loop filtration functions was reported. The aim of this work is to explore the effect of the starting concentration of LiCl on the phase and micromorphology of Li_2CO_3 crystals and thereafter to explore the mechanism of crystallization and grain growth law. Scanning electron microscopy (SEM) images indicate that the particles become irregular polycrystalline from well-defined flower-like and the micro-crystals change from lamellar to needle-like and subsequently to smaller globular granules, and the surface of the crystals becomes smooth with LiCl concentration increasing from 50 to 400 g·L~(-3). The crystalline phases of the different samples were characterized using powder X-ray diffraction (XRD) and the results prove that pure Li_2CO_3 crystals can be obtained in a single step by the electrolysis method. The particle size distributions show that both volume mean crystal sizes and the full width at half maximum (FWHM) decrease when the starting LiCl concentration increases from 50 to 300 g·L~(-3) and also decreases from 400 to 300 g·L~(-3). |
| Keyword | ELECTROCHEMICAL PERFORMANCE LITHIUM-CARBONATE LI EXTRACTION BRINE CRYSTALLIZATION LIFEPO4/FEPO4 BATTERIES Lithium carbonate Lithium chloride Membrane electrolysis Carbon dioxide |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Natural Science Foundations of China] ; [Fundamental Research Funds for the Central Universities] |
| CSCD ID | CSCD:6286600 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/149095 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.东北大学 2.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Pan XiJuan,Zhang TingAn,Dou ZhiHe,et al. A new method for direct synthesis of Li2CO3 powders by membrane electrolysis[J]. RARE METALS,2018,37(8):716-722. |
| APA | Pan XiJuan,Zhang TingAn,Dou ZhiHe,Lyu GuoZhi,Han XiuXiu,&Zhang JunJie.(2018).A new method for direct synthesis of Li2CO3 powders by membrane electrolysis.RARE METALS,37(8),716-722. |
| MLA | Pan XiJuan,et al."A new method for direct synthesis of Li2CO3 powders by membrane electrolysis".RARE METALS 37.8(2018):716-722. |
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