Preparation of Mg-Mn doped LiNiO2 via direct Indonesian Mixed Hydroxide Precipitate Lithiation

M. Rahmawati, E. Apriliyani, T. Paramitha, H. S. A. Gustiana
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Abstract

Using local raw materials affects the development of the Li-ion batteries industry in Indonesia, which is highly important for the sustainability of electric vehicles. Cathode material affects around 40-50% of Li-ion batteries production costs. The utilization of cheap and local nickel sources for nickel rich-cathode material is a promising approach for reducing LIBs cell cost. Mixed Hydroxide Precipitate (MHP) which contain significantly high amount of nickel can serve as the nickel source for LiNiO2 cathode material This article proposes an effective and economical method to obtain nickel rich cathode material via direct high thermal lithiation of MHP. Non negligible amount of Mn and Mg in MHP can be directly used as a dopant. Based on XRD analysis, a mixture of NiO and LNO phase can be detected. The presence of Mg and Mn impurities is not observable. The SEM images confirms the irregular shape of the as-prepared LNO. The FTIR confirm the absence of residual Li. Based on the findings, a pretreatment technique is required to be explored in the future.
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印尼混合氢氧沉淀直接锂化法制备Mg-Mn掺杂LiNiO2
使用当地的原材料影响着印尼锂离子电池产业的发展,这对电动汽车的可持续性非常重要。正极材料影响了锂离子电池生产成本的40-50%。利用廉价的本地镍源制备富镍正极材料是降低锂离子电池成本的一条很有前途的途径。混合氢氧沉淀(MHP)含镍量较高,可作为LiNiO2正极材料的镍源。本文提出了一种经济有效的方法,即通过MHP直接高热锂化法制备富镍正极材料。MHP中不可忽略的Mn和Mg可以直接用作掺杂剂。通过XRD分析,可以检测到NiO和LNO相的混合物。没有观察到镁锰杂质的存在。SEM图像证实了制备的LNO的不规则形状。FTIR证实没有残余Li。在此基础上,未来需要探索一种预处理技术。
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