One-step preparation of pomegranate-shaped Sn/SnOx/nanocarbon composites for fabricating ultrafast-charging/long-life lithium-ion battery

被引：15

作者：

Cao, Mengdi ^{[1
]}

Zhang, Man ^{[1
]}

Xing, Lili ^{[1
]}

Wang, Qiang ^{[1
]}

Xue, Xin-Yu ^{[1
]}

机构：

[1] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 694卷

基金：

中国国家自然科学基金;

关键词：

Nanoparticles; Anode Lithium-ion battery; Solvothermal method; LONG-LIFE; ANODE MATERIALS; HIGH-CAPACITY; NANO-IONICS; STORAGE; SNO2; NANOCOMPOSITES; PERFORMANCE; ELECTRODES; GRAPHENE;

D O I：

10.1016/j.jallcom.2016.09.306

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：

Pomegranate-shaped Sn/SnO(x/)nanocarbon composites are fabricated via a simple one-step solvothermal method. The Sn and SnOx nanoparticles are uniformly embedded in the sheet-like nanocarbon membranes. As the anode of lithium-ion battery, the pomegranate-shaped Sn/SnO(x/)nanocarbon composites exhibit ultrafast-charging and long-life performance. At super high current rate of 10 C, 15 C and 20 C (the charging process is shortened to merely 6, 4 and 3 min, respectively), the reversible capacity of pomegranate-shaped Sn/SnO(x/)nanocarbon composites is 545, 467 and 421 mAh g(-1), respectively. After 2000 cycles, the capacity can still maintain at 192, 139 and 101 mAh g-1 at 10 C, 15 C and 20 C rate, respectively. Even after 5000 cycles at 15 C rate, the discharge capacity can still keep at 135 mAh g-1. Such superior performance can be attributed to the unique structure, good electronic conductivity, short paths for lithium diffusion and interfacial charging mechanism. The present results indicate a new way to produce pomegranate-shaped metal/metal-oxide/nanocarbon composites with ultrafast-charging/long-life lithium-storage performance. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：30 / 39

页数：10

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