Si@SiOx/graphene hydrogel composite anode for lithium-ion battery

被引:144
作者
Bai, Xuejun [1 ,2 ]
Yu, Yueyang [3 ]
Kung, Harold H. [2 ]
Wang, Biao [1 ,4 ]
Jiang, Jianming [1 ,4 ]
机构
[1] Donghua Univ, Coll Mat Sci & Engn, Shanghai 201620, Peoples R China
[2] Northwestern Univ, Dept Chem & Biol Engn, Evanston, IL 60208 USA
[3] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
[4] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
基金
美国国家科学基金会;
关键词
Silicon; Graphene hydrogel; 3D structure; Anode materials; Lithium-ion battery; HIGH-CAPACITY; SILICON NANOPARTICLES; CATHODE MATERIAL; ENERGY-STORAGE; GRAPHENE; PERFORMANCE; NANOCOMPOSITE; NANOWIRES; NANOSPHERES; CHALLENGES;
D O I
10.1016/j.jpowsour.2015.11.102
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 porous 3D graphene hydrogel (GH) composite embedded with Si nanoparticles coated with an ultrathin SiOx layer (Si@SiOx/GH) is successfully synthesized using a solution-based self-assembly process. The thickness of the SiOx coating, formed by an ozone treatment of the 30-50 nm diameter Si particles, increases with the treatment temperature, and its formation results in the presence of Si2+ and Si4+ on the surface of the Si nanoparticles. The GH provides an electrically conducting network of interconnecting, micron-size open cells bounded by ultrathin stacked graphene sheets onto which the coated Si nanoparticles are dispersed. The agglomeration among the Si particles decreases with increasing extent of surface oxidation. Electrodes constructed with the Si@SiOx/GH containing 71 wt.% Si@SiOx exhibit a stable storage capacity of 1020 mAh g(-1) at 4 A g(-1) and 1640 mAh g(-1) after 140 cycles at 0.1 A g(-1). The outstanding electrochemical performance can be attributed to the porous, open cell 3D structure of GH, which provides a large internal space and flexible and electrically conductive graphenic matrix that can accommodate volumetric changes of Si nanoparticles and a highly porous 3D structure of high specific surface area that allows rapid diffusion of Li-ions and easy penetration of electrolyte. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:42 / 48
页数:7
相关论文
共 53 条
[1]   A review of graphene and graphene oxide sponge: material synthesis and applications to energy and the environment [J].
Chabot, Victor ;
Higgins, Drew ;
Yu, Aiping ;
Xiao, Xingcheng ;
Chen, Zhongwei ;
Zhang, Jiujun .
ENERGY & ENVIRONMENTAL SCIENCE, 2014, 7 (05) :1564-1596
[2]   Quartz (SiO2): a new energy storage anode material for Li-ion batteries [J].
Chang, Won-Seok ;
Park, Cheol-Min ;
Kim, Jae-Hun ;
Kim, Young-Ugk ;
Jeong, Goojin ;
Sohn, Hun-Joon .
ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (05) :6895-6899
[3]   Reversible Lithium-Ion Storage in Silver-Treated Nanoscale Hollow Porous Silicon Particles [J].
Chen, Dongyun ;
Mei, Xiao ;
Ji, Ge ;
Lu, Meihua ;
Xie, Jianping ;
Lu, Jianmei ;
Lee, Jim Yang .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (10) :2409-2413
[4]   Silicon nanowires coated with copper layer as anode materials for lithium-ion batteries [J].
Chen, Huixin ;
Xiao, Ying ;
Wang, Lin ;
Yang, Yong .
JOURNAL OF POWER SOURCES, 2011, 196 (16) :6657-6662
[5]   Covalently-functionalizing synthesis of Si@C core-shell nanocomposites as high-capacity anode materials for lithium-ion batteries [J].
Du, Chunyu ;
Chen, Meng ;
Wang, Long ;
Yin, Geping .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (39) :15692-15697
[6]   Electrical Energy Storage for the Grid: A Battery of Choices [J].
Dunn, Bruce ;
Kamath, Haresh ;
Tarascon, Jean-Marie .
SCIENCE, 2011, 334 (6058) :928-935
[7]   Stable Cycling of SiO2 Nanotubes as High-Performance Anodes for Lithium-Ion Batteries [J].
Favors, Zachary ;
Wang, Wei ;
Bay, Hamed Hosseini ;
George, Aaron ;
Ozkan, Mihrimah ;
Ozkan, Cengiz S. .
SCIENTIFIC REPORTS, 2014, 4
[8]   Challenges for Rechargeable Li Batteries [J].
Goodenough, John B. ;
Kim, Youngsik .
CHEMISTRY OF MATERIALS, 2010, 22 (03) :587-603
[9]   A three dimensional SiOx/C@RGO nanocomposite as a high energy anode material for lithium-ion batteries [J].
Guo, Chenfeng ;
Wang, Dianlong ;
Liu, Tiefeng ;
Zhu, Junsheng ;
Lang, Xiaoshi .
JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (10) :3521-3527
[10]   Li2S-reduced graphene oxide nanocomposites as cathode material for lithium sulfur batteries [J].
Han, Kai ;
Shen, Jingmei ;
Hayner, Cary M. ;
Ye, Hongqi ;
Kung, Mayfair C. ;
Kung, Harold H. .
JOURNAL OF POWER SOURCES, 2014, 251 :331-337