One-Pot Facile Synthesis of Ant-Cave-Structured Metal Oxide-Carbon Microballs by Continuous Process for Use as Anode Materials in Li-Ion Batteries

被引：153

作者：

Ko, You Na ^{[1
,2
]}

Park, Seung Bin ^{[2
]}

Jung, Kyeong Youl ^{[3
]}

Kang, Yun Chan ^{[1
]}

机构：

[1] Konkuk Univ, Dept Chem Engn, 1 Hwayang Dong, Seoul 143701, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea

[3] Kongju Natl Univ, Dept Chem Engn, Cheonan 330717, Chungnam, South Korea

来源：

NANO LETTERS | 2013年 / 13卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

Ant-cave-structure; nanochannel; electrode material; lithium ion battery; spray pyrolysis; NANOSTRUCTURED CATHODE MATERIALS; ELECTRODE MATERIALS; HIGH-ENERGY; LITHIUM; PERFORMANCE;

D O I：

10.1021/nl4030352

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper introduces a facile one-pot method for synthesizing a new structured material, named "ant-cave microball", by continuous ultrasonic spray pyrolysis. The ant-cave-structured microballs are prepared from a colloidal spray solution with polystyrene nanobeads and sucrose. Networking between the nanovoids formed by decomposition of the polystyrene nanobeads results in the formation of nanochannels. The electrochemical properties of these ant-cave-structured MoO3-C microballs, prepared as the first target material for lithium ion batteries, are investigated. The nanochannels are uniformly distributed inside the microballs with MoO3 and carbon components uniformly distributed within the microballs. Further, the microballs have initial discharge and charge capacities of 1212 and 841 mA h g(-1), respectively, at a current density of 2 A g(-1), and the initial discharge and charge capacities based on the weight of MoO3 (disregarding carbon component) are as high as 1814 and 1259 mA h g(-1). The microballs deliver a high discharge capacity of 733 mA h g(-1) even after 300 cycles. This is although microsized MoO3 powders with a filled structure have discharge capacities of 1256 and 345 mA h g(-1) for the first and 300th cycles, respectively.

引用

页码：5462 / 5466

页数：5

共 40 条

[11] Facile and controllable fabrication of three-dimensionally quasi-ordered macroporous TiO2 for high performance lithium-ion battery applications [J].