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A novel two-dimensional rare-earth carbide synthesized by selective etching Al-C slab from nanolaminated YAl3C3
Scripta Materialia ( IF 6 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.scriptamat.2020.02.003
Shuli Sun , Jiaxin Yang , Xiao Chen , Weibin Cui , Jianqi Huang , Teng Yang , Zhidong Zhang , Qiang Wang

Abstract A novel rare-earth-based YCxTδ two-dimensional metal carbide (MXene), with feather-like morphology and hexagonal structure, has been prepared by selective etching of a nanolaminated precursor YAl3C3 non-transition-metal-aluminum-carbides (non-MAX) phase. By analyzing the gas products and first-principle calculation, the chemical reaction is concluded. The YCxTδ MXene shows high reversible gravimetric specific capacity of ~ 84 mAh/g as Li ion battery anode and a specific capacitance of 18 F/g as electrode of super capacitors. These intriguing properties suggest the promising application potentials of high-abundance Y in energy storage 1 .

中文翻译:

通过选择性蚀刻纳米层压 YAl3C3 的 Al-C 板合成一种新型二维稀土碳化物

摘要 通过选择性蚀刻纳米层压前驱体 YAl3C3 非过渡金属铝碳化物(非金属碳化物),制备了一种新型的稀土基 YCxTδ 二维金属碳化物(MXene),具有羽毛状形态和六方结构。 MAX) 阶段。通过分析气体产物和第一性原理计算得出化学反应。YCxTδ MXene 作为锂离子电池阳极显示出约 84 mAh/g 的高可逆重量比容量,作为超级电容器的电极显示出 18 F/g 的比电容。这些有趣的特性表明高丰度 Y 在储能 1 中的应用潜力。
更新日期:2020-05-01
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