A C-coated and Sb-doped SnO2 nanocompsite with high surface area and low charge transfer resistance as ultrahigh capacity lithium ion battery anode

被引：10

作者：

Zhang, Qiang ^{[1
]}

Gao, Qiuming ^{[1
]}

Qian, Weiwei ^{[1
]}

Zhang, Hang ^{[1
]}

Tian, Weiqian ^{[1
]}

Li, Zeyu ^{[1
]}

机构：

[1] Beihang Univ, Sch Chem, Beijing Adv Innovat Ctr Biomed Engn,Minist Educ, Dept Key Lab Bioinspired Smart Interfacial Sci &, Beijing 100191, Peoples R China

来源：

MATERIALS TODAY ENERGY | 2019年 / 13卷

基金：

美国国家科学基金会;

关键词：

Tin oxide; Lithium ion battery; Nanocomposite; Anode; Ultrahigh capacity; STORAGE; CARBON; OXIDE; NANOCOMPOSITES; NANOWIRES; GRAPHENE;

D O I：

10.1016/j.mtener.2019.05.006

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：

A novel kind of C-coated and Sb-doped SnO2 (ATO/C) nanocomposite is prepared by a facile hydrothermal method following with high-temperature pyrolysis. The ATO/C particles are uniform, irregular, crystalline and small sizes (similar to 5-8 nm). High specific BET surface area of 192.1 m(2) g(-1) and low charge transfer resistance of 98.9 Omega are obtained for the ATO/C. When used as the anode of lithium ion battery, the ATO/C shows an ultrahigh lithium storage capacity. It may deliver an initial discharge specific capacity of 2634.9 mAh g(-1) with the Coulombic efficiency of 88.4% at 0.1 C, and the capacity increases to the highest 2847.4 mAh g(-1) after 50 cycles. Even after 1000 cycles at the increased current density of 1 C, the discharge capacity of 1008.5 mAh g(-1) can be preserved indicating its high cyclic stability. Besides, it has a capacity of 370.8 mAh g(-1) at the higher current density of 10 C, exhibiting the robust rate property. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：93 / 99

页数：7

共 32 条

[1] Micron-Sized Nanoporous Antimony with Tunable Porosity for High-Performance Potassium-Ion Batteries [J].