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迈向用于钠离子电池的纳米结构钙磷锰矿型微晶玻璃阴极材料的高相纯度

Towards the High Phase Purity of Nanostructured Alluaudite-Type Glass-Ceramics Cathode Materials for Sodium Ion Batteries.

作者信息

Nowagiel Maciej, Samsel Mateusz J, Pietrzak Tomasz K

机构信息

Faculty of Physics, Warsaw University of Technology, Koszykowa 75, PL-00-662 Warsaw, Poland.

出版信息

Materials (Basel). 2021 Sep 1;14(17):4997. doi: 10.3390/ma14174997.

DOI:10.3390/ma14174997
PMID:34501086
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8434363/
Abstract

Alluaudite-type materials are systematically attracting more attention as prospective cathode materials for sodium ion batteries. In this paper, we strove to optimize various synthesis parameters of three alluaudite compositions (Na2Fe3(PO4)3-FFF, Na2VFe2(PO4)3-VFF, and Na2VFeMn(PO4)3-VFM) to obtain nanostructured alluaudite-type glass-ceramics with high phase purity. We systematically investigated the role of the chemical reactions, temperature and time of melting, cooling rate, and reducing factors on the quality of the final products. A detailed synthesis protocol along with X-ray diffractometry, thermal analysis, scanning electron microscopy imaging, and electrical conductivity measurements (with impedance spectroscopy) are reported. As a result, a significant increase of the conductivity was observed in the nanomaterials. The highest value was reached for the VFF composition and was equal to 6×10-4 S/cm at room temperature.

摘要

钙磷铁钠石型材料作为钠离子电池潜在的阴极材料正系统性地吸引着越来越多的关注。在本文中，我们努力优化三种钙磷铁钠石成分（Na2Fe3(PO4)3 - FFF、Na2VFe2(PO4)3 - VFF和Na2VFeMn(PO4)3 - VFM）的各种合成参数，以获得具有高相纯度的纳米结构钙磷铁钠石型微晶玻璃。我们系统性地研究了化学反应、熔融温度和时间、冷却速率以及还原因素对最终产物质量的作用。报告了详细的合成方案以及X射线衍射、热分析、扫描电子显微镜成像和电导率测量（采用阻抗谱）。结果，在纳米材料中观察到电导率显著增加。VFF成分达到了最高值，室温下等于6×10 - 4 S/cm。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/ff47933aebd8/materials-14-04997-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/fc78db3a9b06/materials-14-04997-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/2e87d7f6d15d/materials-14-04997-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/a412ef9ab66d/materials-14-04997-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/94b049802de4/materials-14-04997-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/d51ceb85a6e6/materials-14-04997-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/bb97da87a116/materials-14-04997-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/9a21684dcad3/materials-14-04997-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/ff47933aebd8/materials-14-04997-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/fc78db3a9b06/materials-14-04997-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/2e87d7f6d15d/materials-14-04997-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/a412ef9ab66d/materials-14-04997-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/94b049802de4/materials-14-04997-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/d51ceb85a6e6/materials-14-04997-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/bb97da87a116/materials-14-04997-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/9a21684dcad3/materials-14-04997-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaf/8434363/ff47933aebd8/materials-14-04997-g008.jpg

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