Enhanced cycle stability of iron(II, III) oxide nanoparticles encapsulated with nitrogen-doped carbon and graphene frameworks for lithium battery anodes

被引：29

作者：

De Pham-Cong ^{[1
]}

Kim, Su Jae ^{[1
]}

Jeong, Se Young ^{[1
]}

Kim, Jong-Pil ^{[2
]}

Kim, Hyun Gyu ^{[2
]}

Braun, Paul V. ^{[3
]}

Cho, Chae-Ryong ^{[1
,4
]}

机构：

[1] Pusan Natl Univ, Coll Nanosci & Nanotechnol, Busan 46241, South Korea

[2] Korea Basic Sci Inst, Busan Ctr, Busan 46742, South Korea

[3] Univ Illinois, Frederick Seitz Mat Res Lab, Dept Mat Sci & Engn, Urbana, IL 61801 USA

[4] Pusan Natl Univ, Dept Nanoenergy Engn, Busan 46241, South Korea

来源：

CARBON | 2018年 / 129卷

基金：

新加坡国家研究基金会;

关键词：

Nitrogen-doped carbon; Graphene oxide; Iron oxide; Nanoparticles; Cycle stability; LI-ION BATTERIES; HIGH-PERFORMANCE ANODE; ELECTROCHEMICAL PERFORMANCE; ELECTRODE MATERIALS; HOLLOW NANOFIBERS; ENERGY-STORAGE; FE3O4; COMPOSITES; CAPACITY; NANOSTRUCTURES;

D O I：

10.1016/j.carbon.2017.12.073

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：

Nitrogen-doped carbon-coated and graphene oxide-wrapped Fe3O4 nanoparticles were prepared using the electrostatic force between polyethyleneimine-functionalized Fe3O4 nanoparticles and graphene oxide layers, followed by annealing in an N-2 atmosphere (Fe3O4@NCG). The electrochemical performance of Fe3O4@NCG was superior to that of graphene oxide-or reduced graphene oxide-wrapped Fe3O4 nanoparticles and carbon-coated Fe3O4 nanoparticles. Fe3O4@NCG exhibited stable specific capacity of similar to 895 mAh g(-1) after 350 cycles over the voltage range 0.001-3.0 V vs. Li/Li+. The superior performance of Fe3O4@NCG was attributed to the presence of a nitrogen-doped carbon layer and networks of reduced graphene oxide. The chemical route-derived Fe3O4@NCG may be a promising anode material for high-performance lithium-ion batteries. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：621 / 630

页数：10

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