阳极
材料科学
异质结
双金属片
电化学
硫化物
化学工程
电流密度
纳米技术
金属
电极
冶金
光电子学
化学
物理
工程类
物理化学
量子力学
作者
Yilin Wang,Kai Wang,Qiming Liu,Jie Wang
标识
DOI:10.1016/j.jcis.2024.09.094
摘要
Transition metal sulfides have emerged as compelling anode materials for sodium-ion batteries (SIBs), leveraging their abundant elemental reserves and high theoretical capacities. However, the reaction of sulfur with Na ions is usually accompanied by significant volume dilation, which hinders their further development and application. Hence, constructing bimetallic sulfide (FeSn)/S for SIBs anode material greatly alleviates the circulation attenuation caused by volume expansion. Through constructing bimetallic heterojunction materials from nanocube precursors, the (FeSn)/S anode material retains a high specific capacity of 578 mAh/g at an intense current density of 2 A/g after 1000 cycles, and exhibits an great rate capability, delivering 796 mAh/g at 100 mA/g. The excellent electrochemical performance of the heterojunction material presents a promising solution to the enduring quest for enhanced anode material for SIBs.
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