氧化锡作为镁离子电池的负极材料

IF 1.4 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Chemistry Letters Pub Date : 2024-09-17 DOI:10.1093/chemle/upae177

Keito Yamamoto, Takuya Kawai, Masahiro Shimizu

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引用次数: 0

摘要

作为镁离子电池负极材料的氧化锡尽管88 wt.%的锡含量较低，但与纯锡相比，在第一个循环中显示出更大的容量（540 mA h g-1）。XRD 图谱和 XPS 光谱显示，在第一次充电过程中，通过还原形成了与锡的合金化/脱合金化。由于生成的细小锡颗粒中的镁扩散长度更短，因此容量更大。氧化镁基质减少了锡的团聚，从而在 10 个以上的循环中保持了高容量。

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Tin Oxides as a Negative Electrode Material for Mg-Ion Batteries

SnO as a negative electrode material for Mg-ion batteries exhibited a larger capacity of 540 mA h g−1 at the first cycle than that of pure Sn, despite the lower 88 wt.% Sn content. XRD patterns and XPS spectra revealed the alloying/de-alloying with Sn formed by the reduction during the first charging. The greater capacity is attributed to the shorter Mg diffusion length in the resulting fine Sn particles. MgO matrix played a role in maintaining the high capacity for more than 10 cycles by diminishing the Sn agglomeration.

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来源期刊

Chemistry Letters 化学-化学综合

CiteScore

3.00

自引率

6.20%

发文量

260

审稿时长

1.2 months

期刊介绍： Chemistry Letters covers the following topics: -Organic Chemistry- Physical Chemistry- Inorganic Chemistry- Analytical Chemistry- Materials Chemistry- Polymer Chemistry- Supramolecular Chemistry- Organometallic Chemistry- Coordination Chemistry- Biomolecular Chemistry- Natural Products and Medicinal Chemistry- Electrochemistry