A critical SiOx layer on Si porous structures to construct highly-reversible anode materials for lithium-ion batteries,Chemical Communications

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A critical SiOx layer on Si porous structures to construct highly-reversible anode materials for lithium-ion batteries
Chemical Communications ( IF 4.3 ) Pub Date : 2017-05-12 00:00:00 , DOI: 10.1039/c7cc02732j
Yifan Chen _{1,

2,

3,

4,

5} , Yangfan Lin _{1,

2,

3,

4,

5} , Ning Du _{1,

2,

3,

4,

5} , Yaguang Zhang _{1,

2,

3,

4,

5} , Hui Zhang _{1,

2,

3,

4,

5} , Deren Yang _{1,

2,

3,

4,

5}

Affiliation

A novel Si/SiO_x porous structure with a SiO_x coating layer of varying thicknesses was prepared via a simple annealing and acid washing process. When used as an anode material for lithium-ion batteries, the Si/SiO_x porous structure with an ∼9 nm SiO_x coating layer demonstrates significantly improved electrochemical performance with a high reversible discharge capacity of over 915 mA h g⁻¹ after 500 long cycles at 1 A g⁻¹. The lithiation mechanism of a SiO_x layer of different thicknesses has also been investigated.

中文翻译：

硅多孔结构上的关键SiO _x层，用于构建锂离子电池的高度可逆阳极材料

通过简单的退火和酸洗工艺制备了具有变化厚度的SiO _x涂层的新颖的Si / SiO _x多孔结构。当用作锂离子电池的负极材料时，具有约9 nm SiO _x涂层的Si / SiO _x多孔结构表现出显着改善的电化学性能，在500个长时间循环后具有超过915 mA hg ^-1的高可逆放电容量在1 A g ^-1。还研究了不同厚度的SiO _x层的锂化机理。

更新日期：2017-05-22

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