Facile synthesis of Li4Ti5O12 nanosheets stacked by ultrathin nanoflakes for high performance lithium ion batteries

被引:41
作者
Xiao, Lili [1 ]
Chen, Gang [1 ]
Sun, Jingxue [1 ]
Chen, Dahong [1 ]
Xu, Haiming [1 ]
Zheng, Yi [1 ]
机构
[1] Harbin Inst Technol, Dept Chem, Harbin 150001, Peoples R China
关键词
ELECTRICAL ENERGY-STORAGE; NANOSTRUCTURED MATERIALS; HYDROTHERMAL SYNTHESIS; ANODE MATERIALS; TITANATE; TIO2; NANOMATERIALS; TRANSITION; ELECTRODES; CONVERSION;
D O I
10.1039/c3ta12569f
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
Li4Ti5O12 nanosheets stacked by ultrathin nanoflakes derived from the interlayer splitting and exfoliation of the layered orthorhombic Li1.81H0.19Ti2O5 center dot xH(2)O precursors are obtained by a facile method. The precursors are synthesized through a one-step, low-temperature hydrothermal method with a mixed solvent of ethanol and water. The surfactants and templates are free during the fabrication process. The ultrathin nanoflakes are interconnected and their thicknesses are only similar to 3 nm. Possible morphology formation and crystal structure transition mechanisms are proposed through time-dependent experiments. As an anode material for rechargeable lithium-ion batteries, the Li4Ti5O12 nanosheets with a stacked structure delivered an initial discharge capacity of 175.9 mA h g(-1), together with a discharge capacity of 166.8 mA h g(-1) after 100 cycles at 0.5 C. The discharge capacity could reach up to 100.2 mA h g(-1) even at 20 C. We infer that except for the self advantages of nanosheets as nanomaterials, the delicate structure consisted of stacks of interconnected ultrathin nanoflakes and can promote the kinetic property of lithium ions and electrons diffusion through offering more transporting channels, which is favorable for high-rate performance.
引用
收藏
页码:14618 / 14626
页数:9
相关论文
共 47 条
[1]   An asymmetric hybrid nonaqueous energy storage cell [J].
Amatucci, GG ;
Badway, F ;
Du Pasquier, A ;
Zheng, T .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (08) :A930-A939
[2]   Nanostructured materials for advanced energy conversion and storage devices [J].
Aricò, AS ;
Bruce, P ;
Scrosati, B ;
Tarascon, JM ;
Van Schalkwijk, W .
NATURE MATERIALS, 2005, 4 (05) :366-377
[3]   Nanomaterials for rechargeable lithium batteries [J].
Bruce, Peter G. ;
Scrosati, Bruno ;
Tarascon, Jean-Marie .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (16) :2930-2946
[4]   Synthesis of hierarchical mesoporous nest-like Li4Ti5O12 for high-rate lithium ion batteries [J].
Chen, Jizhang ;
Yang, Li ;
Fang, Shaohua ;
Hirano, Shin-ichi ;
Tachibana, Kazuhiro .
JOURNAL OF POWER SOURCES, 2012, 200 :59-66
[5]   Advanced energy storage device: a hybrid BatCap system consisting of battery-supercapacitor hybrid electrodes based on Li4Ti5O12-activated-carbon hybrid nanotubes [J].
Choi, Hong Soo ;
Im, Ji Hyuk ;
Kim, TaeHoon ;
Park, Jae Hyun ;
Park, Chong Rae .
JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (33) :16986-16993
[6]   Rapid Synthesis of Li4Ti5O12 Microspheres as Anode Materials and Its Binder Effect for Lithium-Ion Battery [J].
Chou, Shu-Lei ;
Wang, Jia-Zhao ;
Liu, Hua-Kun ;
Dou, Shi-Xue .
JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (32) :16220-16227
[7]   Electrical Energy Storage for the Grid: A Battery of Choices [J].
Dunn, Bruce ;
Kamath, Haresh ;
Tarascon, Jean-Marie .
SCIENCE, 2011, 334 (6058) :928-935
[8]   Synthesis and characterization of porous and nonporous monodisperse colloidal TiO2 particles [J].
Eiden-Assmann, S ;
Widoniak, J ;
Maret, G .
CHEMISTRY OF MATERIALS, 2004, 16 (01) :6-11
[9]   THEORETICAL-ANALYSIS OF THE STRUCTURES OF TITANIUM-DIOXIDE CRYSTALS [J].
FAHMI, A ;
MINOT, C ;
SILVI, B ;
CAUSA, M .
PHYSICAL REVIEW B, 1993, 47 (18) :11717-11724
[10]   Superior electrode performance of nanostructured mesoporous TiO2 (anatase) through efficient hierarchical mixed conducting networks [J].
Guo, Yu-Guo ;
Hu, Yong-Sheng ;
Sigle, Wilfried ;
Maier, Joachim .
ADVANCED MATERIALS, 2007, 19 (16) :2087-+