Porosity controlled synthesis of nanoporous silicon by chemical dealloying as anode for high energy lithium-ion batteries

被引：51

作者：

Tao, Yuan ^{[1
]}

Zeng, Guifang ^{[1
]}

Xiao, Chengyuan ^{[1
]}

Liu, Yining ^{[1
]}

Qian, Yitai ^{[2
]}

Feng, Jinkui ^{[1
]}

机构：

[1] Shandong Univ, SDU & Rice Joint Ctr Carbon Nanomat, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ,Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China

[2] Univ Sci & Technol China, Dept Chem, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2019年 / 554卷

关键词：

Porous silicon; Different proportion; Chemical dealloying; Lithium-ion batteries; Anode material; METAL-ORGANIC FRAMEWORK; HIGH-PERFORMANCE ANODES; POROUS SILICON; SI NANOPARTICLES; C COMPOSITE; BINDERS; STORAGE; DESIGN; GROWTH; MOFS;

D O I：

10.1016/j.jcis.2019.07.043

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：

Silicon is regarded as the most promising electrode material to meet the high-capacity demand for lithium-ion batteries (LIBs). Nevertheless, the large volume expansion during charging/discharging process restricts its practical application. In this report, a facile chemical dealloying method is conducted to prepare porous silicon materials from Al-Si alloys with different proportions at ambient temperature. The porosity of anode materials could buffer the huge volume change of Si anode and enhance the ion transport. Finally, the optimized Si20 sample delivers a capacity of 1662 mAh g(-1) after 145 cycles at 500 mA g(-1) and a high rate capability up to 908 mAh g(-1) at 5000 mA g(-1). (C) 2019 Elsevier Inc. All rights reserved.

引用

页码：674 / 681

页数：8

共 51 条

[1] Fabrication of powdered Si-O-C composite by electrodeposition harvesting method as a long-cycle-life anode material for lithium-ion batteries [J].