中南大学化学化工学院;北京高压科学研究中心(上海分中心);
分别以Li_2CO_3和MnO为Li源和Mn源,采用高温固相烧结的方法,合成了Li、Mn掺杂的MgCoNiCuZnO_5高熵金属氧化物(High-entropy oxides,HEOx)材料(Mg,Co,Ni,Cu,Zn)0.95Li0.05O0.975和(Mg,Co,Ni,Cu,Zn)0.95Mn0.05O。并与未掺杂的HEOx进行对比,研究了Li和Mn两种不同金属元素对HEOx材料的相结构和导电性能的影响。交流阻抗的研究结果表明,Li、Mn掺杂后HEOx导电性明显提高,同时,紫外-可见-近红外吸收光谱表明三种材料都表现出半导体特性,其带隙宽度为1.2～1.7eV,并且Li、Mn掺杂后HEOx的直接带隙变小,Li-HEOx为1.23eV,Mn-HEOx为1.38eV。
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基本信息:
DOI：
中图分类号:TG139
引用信息:
[1]陈见,尹周澜,张衡中.Li、Mn掺杂对MgCoNiCuZnO_5导电性能的影响[J].有色金属工程,2019,9(08):1-6.
基金信息:
国家自然科学基金资助项目(21875005)~~