Facile synthesis of SiOx/C as high-performance anodes for lithium-ion batteries

被引：0

作者：

Hui, Xuewen ^{[1
]}

Lin, Yan ^{[1
,2
]}

Mo, Hesu ^{[1
]}

Zha, Zhenlong ^{[1
]}

Ma, Zequn ^{[1
]}

Chen, Zhigang ^{[1
]}

Wu, Zhengying ^{[1
]}

机构：

[1] Suzhou Univ Sci & Technol, Sch Mat Sci & Engn, Jiangsu Key Lab Environm Funct Mat, Suzhou 215009, Peoples R China

[2] Univ Oulu, Fac Technol, Res Unit Sustainable Chem, Oulu 90570, Finland

来源：

CHEMICAL PHYSICS LETTERS | 2024年 / 848卷

关键词：

g-C3N4; Carbon; SiOx/C; Lithium-ion battery; Anode material; RATIONAL DESIGN; CARBON;

D O I：

10.1016/j.cplett.2024.141388

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Despite its high capacity (-2615 mAh center dot g(-1)), silicon oxide (SiOx) suffers from low electrical conductivity and volume expansion during cycling, leading to capacity fading. In this work, a SiOx/C composite was synthesized by magnesium thermal reduction using co-assembled mesoporous SiO2 and graphitic carbon nitride (g-C3N4) as precursors. The SiOx/C composite displays a sheet-like nanostructure with highly dispersed SiOx. The presence of carbon enhances the conductivity and structural stability of the composite, leading to a low charge resistance (94.0 Omega), fast lithium diffusion (DLi+ = 5.15 x 10(-14) cm(2)center dot s(-1)), and excellent cycling capability (863 mAh center dot g(-1) after 160 cycles).

引用

页数：6

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