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Selected-control synthesis and characterisation of nanoscaled ammonium vanadates with good cycling stability for lithium-ion batteries

锂离子电池循环稳定性好的纳米钒酸铵的选择性控制合成与表征

基本信息

批准号：
255305334
负责人：
Professor Dr. Rüdiger Klingeler
金额：
--
依托单位：
Kirchhoff-Institut für Physik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2013
资助国家：
德国
起止时间：
2012-12-31 至 2013-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/255305334?language=en
关键词：
Selected control synthesis characterisation nanoscaled

项目摘要

Vanadium oxide and related nanomaterials are particularly promising regarding low-dimensional magnetic properties as well as their potential for energy storage in Li-ion batteries and supercaps. Main advantages are easy synthesis, low cost, low toxicity, and high capacity. We propose to study the growth mechanisms and synthesis routes as well as the structural, magnetic, and electrochemical properties of V-based nanomaterials. This will be achieved by an interdisciplinary Russian-German collaboration combining the competences of the host team, i.e. condensed matter physics and materials science including battery research, and of Dr. Zakharova and her team, who is an internationally renowned inorganic chemist with great experience in synthesis of inorganic nanostructures. In particular, we will study in detail the effect of structure, morphology, and particle size of the vanadium oxide micro- and nanocompounds on their physical and electrochemical properties. Two types of potential battery materials will be investigated: ammonium vanadium oxides and lithium vanadium oxides. Particular emphasis will be put on improving the materials regarding cycling stability and discharge capacity in Li-ion batteries. The main scientific aims are (1) to gain fundamental understanding of growth mechanisms and synthesis routes, (2) to study size effects on the magnetic properties, and (3) to search for cathode material with a good cycling stability and discharge capacity.

氧化钒和相关纳米材料在低维磁特性及其在锂离子电池和超级电容器中的储能潜力方面特别有前景。主要优点是合成容易、成本低、毒性低、容量大。我们建议研究钒基纳米材料的生长机制和合成路线以及结构、磁性和电化学性能。这将通过俄德跨学科合作来实现，该合作结合了主办团队（即凝聚态物理和材料科学，包括电池研究）以及扎哈罗娃博士和她的团队的能力，扎哈罗娃博士和她的团队是国际知名的无机化学家，在无机纳米结构的合成方面拥有丰富的经验。特别是，我们将详细研究钒氧化物微米和纳米化合物的结构、形貌和粒径对其物理和电化学性能的影响。将研究两种类型的潜在电池材料：铵钒氧化物和锂钒氧化物。将特别强调改善锂离子电池循环稳定性和放电容量的材料。主要科学目标是（1）获得对生长机制和合成路线的基本了解，（2）研究磁性能的尺寸效应，以及（3）寻找具有良好循环稳定性和放电容量的正极材料。