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Chemistry of Inorganic Materials Pub Date : 2025-02-16 DOI:10.1016/j.cinorg.2025.100095

Nurhidayu Harudin , Zurina Osman , Mohd Zieauddin Kufian , Izlina Supa'at , Norazlin Zainal , Markus Diantoro , Herlin Pujiarti

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引用次数: 0

摘要

镁电池是几种新型电池技术之一，具有成本低、环保和安全性高等优点，有望在未来取代锂电池。然而，由于镁离子在固态下的迁移动力学缓慢，镁电池的发展一直受到很大阻碍。在这项研究中，利用自蔓延燃烧法制备了两种不同钙成分的掺钙 MgMn2O4 阴极材料：MgMn2-xCaxO4 (x = 0.1, 0.2, 0.3) 和 MgMn2-yCayO4 (y = 0.01, 0.02, 0.03)。X 射线衍射（XRD）和场发射扫描电子显微镜（FESEM）对其结构特性进行了表征。使用能量色散 X 射线 (EDX) 光谱测定了元素分布。电化学性能也通过线性扫描伏安法（LSV）和循环伏安法（CV）进行了评估。在 1:1 体积的碳酸乙烯（EC）和 1,2-二甲氧基乙烷（DME）中使用 1 M 的三氟甲磺酸镁（Mg (CF3SO3)2）对镁离子电池进行了电静态充/放电。充放电结果表明，低钙成分 MgMn1.97Ca0.03O4 阴极的容量最高，达到 144 mAh g-1。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Characteristics of Mg-based cathode materials with different doping element concentrations

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Characteristics of Mg-based cathode materials with different doping element concentrations

Mg batteries are one of several new battery technologies that have a potential to replace lithium-based batteries in the future due to its advantages such as low cost, environmentally friendly and improved safety. However, the development of Mg batteries has been greatly hindered by the sluggish Mg ions migration kinetics in the solid state. In this work, self-propagating combustion was used to produce Ca-doped MgMn₂O₄ based cathode materials with two distinct Ca compositions: MgMn_2-xCa_xO₄ (x = 0.1, 0.2, 0.3) and MgMn_2-yCa_yO₄ (y = 0.01, 0.02, 0.03) at annealing temperature of 800 °C. The structural properties have been characterized by X-ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM). The elemental distribution was determined using Energy Dispersive X-ray (EDX) spectroscopy. The electrochemical performances were also been evaluated by linear sweep voltammetry (LSV), and cyclic voltammetry (CV). The galvanostatic charge/discharge of Mg ion cells using 1 M of magnesium trifluoromethanesulfonate (Mg (CF₃SO₃)₂) in 1:1 volume of ethylene carbonate (EC) and 1,2-dimethoxyethane (DME) has been performed. The charge-discharge results demonstrated the cathode with a low Ca composition, MgMn_1.97Ca_0.03O₄, had delivered the highest capacity of 144 mAh g⁻¹.

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Chemistry of Inorganic Materials

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