Microwave-assisted synthesis of LiNiO2-a preliminary investigation
Microwave-assisted synthesis of LiNiO2-a preliminary investigation
复制标题
微波辅助合成LiNiO2-初步研究
DOI：
10.1016/s0378-7753(03)00458-0
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发表时间：
2003
影响因子：
9.2
通讯作者：
N. Renganathan
中科院分区：
文献类型：
--
作者：
P. Kalyani;N. Kalaiselvi;N. Renganathan
本文介绍了有关通过微波炉合成 LiNiO2 的可能性的基础研究结果。已经进行了涉及各种前体的若干尝试，以期确定本质上具有微波接收性和反应性的前体的合适组合。此外，还对合成相纯 LiNiO2 所需的微波暴露时间和后热处理时间等反应条件进行了优化。最佳合成涉及两个步骤，即。将前体暴露于微波 5 分钟，然后在流动氧气或空气中加热样品约 5 小时进行后处理。尽管涉及两个步骤，但该过程减少了处理时间和成本。在本研究中选择的各种前驱体组合中，微波辐射（5分钟）的LiOH-Ni(OH)2组合在O2中进行后热处理（5小时）时会形成相纯的LiNiO2样品，该样品表现出良好的电化学性能（163mAhg−1），可作为锂电池的潜在阴极材料。
This paper presents the results of fundamental studies concerning the possibility of synthesizing LiNiO2by means of a microwave oven. Several attempts involving various precursors have been made with a view to identify suitable combinations of precursors that are microwave receptive and reactive in nature. Also, the optimization of reaction conditions, both in terms of microwave exposure time and period of post-heat-treatment required to synthesize phase-pure LiNiO2, has been made. The optimum synthesis involves two steps, viz. exposure of precursor to microwaves for 5min followed by a post-treatment of heating the samples in flowing oxygen or in air for about 5h. Despite the involvement of two steps, this procedure reduces both processing time and cost. Among the various combinations of precursors chosen for the present study a microwave irradiated (5min) LiOH–Ni(OH)2combination when subjected to post-heat-treatment in O2(5h) results in the formation of a phase-pure LiNiO2sample, which exhibits good electrochemical performance (163mAhg−1) as a potential cathode material for lithium cells.