Synthesis of LiFePO_4 powder by the organic-inorganic steric entrapment method

Daniel Ribero; Waltraud M. Kriven

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Synthesis of LiFePO_4 powder by the organic-inorganic steric entrapment method

机译：有机-无机位阻法合成LiFePO_4粉末

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A nanoscale and pure, olivine-structured LiFePO_4 was synthesized at ～300 ℃ using an organic-inorganic steric entrapment method. Normally, when calcined and crystallized in air, this method leads to the synthesis of compounds where the cations are in their highest oxidation state. However, in this study, we found a way to produce compounds having lower oxidation states (e.g., compounds containing Fe~(2+)), which may have wider applications in the synthesis of other compounds with complex chemistry that have variable oxidation states and, therefore, potential applications in electronic ceramics. The resulting LiFePO_4 or (Li_2O·2FeO·P_2O_5) was characterized by thermogravimetric analysis/differential thermal analysis, x-ray diffractometry, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma emission spectroscopy, specific surface area by Brunauer-Emmett-Teller nitrogen absorption, and particle size analysis.

机译：采用有机-无机位阻法在〜300℃合成了纳米级的纯橄榄石结构的LiFePO_4。通常，在空气中煅烧和结晶时，此方法可合成阳离子处于最高氧化态的化合物。但是，在这项研究中，我们找到了一种生产具有较低氧化态的化合物的方法（例如，含Fe〜（2+）的化合物），该方法在具有复杂化学性质且具有可变氧化态的其他化合物的合成中可能具有更广泛的应用。因此，在电子陶瓷中的潜在应用。通过热重分析/差热分析，x射线衍射，扫描电子显微镜，透射电子显微镜，电感耦合等离子体发射光谱，Brunauer-Emmett-Teller氮的比表面积对所得的LiFePO_4或（Li_2O·2FeO·P_2O_5）进行表征吸收和粒度分析。

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《Journal of Materials Research》 |2015年第14期|2133-2143|共11页
作者
Daniel Ribero; Waltraud M. Kriven;
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作者单位

Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA;

Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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正文语种 eng
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Synthesis of LiFePO_4 powder by the organic-inorganic steric entrapment method

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