Reactive flash synthesis and phase compositions of Li (CoCrFeMnNi)O (x = 0–1) oxides
Reactive flash synthesis and phase compositions of Li (CoCrFeMnNi)O (x = 0–1) oxides
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DOI：
10.1016/j.ceramint.2023.03.291
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发表时间：
2023-04
影响因子：
5.2
通讯作者：
Baisheng Ma;Jincheng Li;Yan Zhu;Kewei Wang;Boyan Sun;Ke Ren
中科院分区：
文献类型：
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作者：
Baisheng Ma;Jincheng Li;Yan Zhu;Kewei Wang;Boyan Sun;Ke Ren
本文采用反应快速烧结法合成了一系列Lix（CoCrFeMnNi）氧化物。研究了不同锂掺杂量下氧化物的相组成和电导率。样品（CoCrFeMnNi）3 O 4为尖晶石结构的单相（Fd-3 m）。随着Li的掺入，相转变为岩盐结构（Fm-3 m），然后转变为层状结构（R-3 m）。用交流阻抗法对样品的离子电导率和电子电导率进行了表征。随着Li掺杂量的增加，样品的离子电导率和电子电导率先沿着尖晶石结构向岩盐结构转变而降低，然后随着Li掺杂量的进一步增加，沿着岩盐结构向层状结构转变而升高。
In this paper, the reactive flash sintering method was adopted to synthesize a series of Lix(CoCrFeMnNi)Oyoxides withxin the range of 0–1. The phase compositions and electrical conductivities of the oxides at different Li incorporation level were characterized. A single phase of spinel structure (Fd-3m) was obtained for the sample (CoCrFeMnNi)3O4. With incorporation of Li, the phase transformed into Rock-salt structure (Fm-3m) and then layered structure (R-3m). The ionic and electronic conductivities of the samples were characterized by impedance spectrometry. The ionic and electronic conductivities of the samples decreased with increasing Li incorporation level at first along with the spinel to Rock-salt structure transformation, and then increased with further increasing Li incorporation level along with the Rock-salt to layered structure transformation.