Anisotropic particle synthesis and characterization for lithium-ion battery electrode materials via precursor precipitate growth inhibitor
Anisotropic particle synthesis and characterization for lithium-ion battery electrode materials via precursor precipitate growth inhibitor
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DOI：
10.1016/j.powtec.2021.08.060
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发表时间：
2021-12
影响因子：
5.2
通讯作者：
Chen Cai;Hongxu Dong;Gary M. Koenig
中科院分区：
文献类型：
--
作者：
Chen Cai;Hongxu Dong;Gary M. Koenig
为了获得更高的功率和能量密度的电池，电极通常被设计成增加电流密度和厚度。在这种情况下，电极的微观结构可能成为一个重要的因素。电极微结构的形成取决于多种因素，而能够促进各向异性微结构形成的因素之一是锂离子电池活性材料颗粒的各向异性。因此，生产具有各向异性粒子形态的活性材料的可靠方法是需要的。本文将描述使用抑制剂来指导锂离子电池前体颗粒的各向异性形态。这种各向异性的次级血小板形态在转化为最终的活性物质颗粒后仍保持不变。该合成方法应普遍适用于制备各种各向异性形态的过渡金属氧化物组合物，但在前驱体合成过程中，抑制剂对过渡金属的析出速率有显著影响。本文将介绍三种定向合成各向异性阴极粒子的范例材料。
To achieve higher power and energy density batteries, electrodes are often designed towards increased current densities and thicknesses. Under such conditions, electrode microstructure can become an important factor. Electrode microstructure is dependent on many factors, but one factor that can facilitate anisotropic microstructures is having anisotropic lithium-ion battery active material particles. Thus, robust methods to produce active materials with anisotropic particle morphologies are desirable. This manuscript will describe the use of an inhibitor to direct anisotropic morphologies of lithium-ion battery precursor particles. This anisotropic secondary platelet morphology was retained after conversion to final active material particles. The synthesis method should be generally applicable to producing a variety of transition metal oxide compositions with anisotropic morphologies, however, the inhibitor can have significant impacts on the rate of precipitation of the transition metals during precursor synthesis. Three exemplar materials will be described towards targeted synthesis of anisotropic cathode particles.