Mg2Sn alloy anode materials with high interfacial activity for chloride ion batteries

He, Yan‐Ping; Xia, Tianchen; Zhang, Chang; Zhao, Xiangyu

doi:10.1007/s10008-023-05620-9

Cited by 2 publications

(1 citation statement)

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“…As shown in Figure S3, the main peaks of Mg 1s and 2p orbitals are found at energy values of around 1304.0 eV and 49.7 eV, respectively, in the X-ray photoelectron spectra following the process of magnesiation. The observed main peaks, which are associated with the Mg 2 Sn alloy, [54,55] were no longer present following the demagnesiation of the battery. Furthermore, as illustrated in Figure 9a, the X-ray photoelectron spectra of Mg 1s of Sn 33.8 SiOCN anode after magnesiation can be deconvoluted into three peaks at 1303.0 eV, 1304.0 eV and 1305.4 eV that can be assigned to MgÀ N bond, Mg 2 Sn compound, and MgÀ C bond, respectively.…”

Section: Samplesmentioning

confidence: 94%

Tin–containing Silicon Oxycarbonitride Ceramic Nanocomposites as Stable Anode for Magnesium Ion Batteries

Guo,

Wang,

Gurlo

et al. 2024

Batteries & Supercaps

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The development of magnesium ion batteries as a viable alternative to lithium‐ion batteries is impeded by the lack of efficient and stable electrode materials. Here, we present the synthesis of nanocomposites of tin‐containing silicon oxycarbonitride (Sn/SiOCN) as anode materials for magnesium ion batteries (MIBs). The elemental and phase composition, morphology, and surface area of the nanocomposites are assessed by several characterization techniques. The galvanostatic cycling tests indicate a substantial initial discharging capacity for the anode with 42.2 wt.% of tin. Specifically, the first discharging capacities are 489.9 mA/g, 172.9 mA/g, and 136.6 mA/g at current densities of 0.5 mA/g, 50 mA/g, and 500 mA/g, respectively. After 100 cycles at a current density of 500 mA/g, the anode containing 33.8 wt% of tin exhibits a reversible capacity of 101.8 mAh/g and a remarkable rate performance efficiency of 76.5%. Increasing tin content in the electrode materials increases the battery performance by decreasing electrode impedance and thus facilitating Mg2+ diffusion, as revealed by electrochemical impedance spectroscopy (EIS). Ex situ XRD and X‐ray photoelectron spectroscopy (XPS) characterizations following the magnesiation‐demagnesiation process confirm the storage of reversible storage of Mg2+ ions in Sn/SiOCN electrode through incorporation in the SiOCN network and alloying/dealloying process involving Mg‐Mg2Sn‐Mg.

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Section: Samplesmentioning

confidence: 94%