橄榄石
镁
密度泛函理论
二价
阴极
材料科学
氧化还原
无机化学
化学
物理化学
矿物学
冶金
计算化学
作者
C. Vicente,Soledad Rubio,Rafaela Ruiz,Wenhua Zuo,Ziteng Liang,Yong Yang,Gregório F. Ortiz
出处
期刊:Small
[Wiley]
日期:2023-01-12
卷期号:19 (12)
被引量:1
标识
DOI:10.1002/smll.202206010
摘要
Abstract Magnesium driven reaction in olivine‐type MgMn 0.5 Zn 0.5 SiO 4 structure is subject of study by experimental tests and density functional theory (DFT) calculations. The partial replacement of Mn in Oh sites by other divalent metal such as Zn to get MgMn 0.5 Zn 0.5 SiO 4 cathode is successfully developed by a simple sol–gel method. Its comparison with the well‐known MgMnSiO 4 olivine‐type structure with (Mg) M1 (Mn) M2 SiO 4 cations distribution serves as the basis of this study to understand the structure, and the magnesium extraction/insertion properties of novel olivine‐type (Mg) M1 (Mn 0.5 Zn 0.5 ) M2 SiO 4 composition. This work foresees to extend the study to others divalent elements in olivine‐type (Mg) M1 (Mn 0.5 M 0.5 ) M2 SiO 4 structure with M = Fe, Ca, Mg, and Ni by DFT calculations. The obtained results indicate that the energy density can be attuned between 520 and 440 W h kg −1 based on two properties of atomic weight and redox chemistry. The presented results commit to open new paths toward development of cathodes materials for Mg batteries.
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