Prev. Article Next Article Articles ASAP

Article

Vapor Growth and Chemical Delithiation of Stoichiometric LiCoO₂ Crystals

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

Qiyin Lin*, Qing’an Li, Kenneth E. Gray, and John F. Mitchell

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States

Cryst. Growth Des., Article ASAP

DOI: 10.1021/cg201238n

Publication Date (Web): January 12, 2012

*E-mail: linqiyin@gmail.com.

Abstract

Single crystals of LiCoO₂ have been grown by a vapor transport method at high temperature and normal atmospheric pressure. The plate-like single crystals have large (00l) facets (up to 1 mm²) and thicknesses ranging from 5 to 50 μm. A single-crystal X-ray diffraction study confirmed the trigonal R3̅m space group with lattice parameters a = 2.8150(3) Å and c = 14.0516(6) Å at room temperature. Electrical transport measurements indicated that as-grown crystals are highly insulating, with electrical resistivity in the order of TΩ cm at room temperature. This contrasts with the value of 5 Ω cm previously reported for a flux-grown crystal and suggests that vapor growth crystals may have fewer defects. Li-ion deintercalation of LiCoO₂ crystals was carried out by a chemical extraction process. A quasi-in situ XRD approach was utilized to monitor the structural evolution during the Li-ion extraction process, which exhibited the progression of phases widely established for this system, but also shows evidence of inhomogeneous delithiation mechanism. Transport measurements confirm metallic behavior for delithiated Li_xCoO₂ crystals (0.5 < x < 1.0) with anomalies in the temperature of 150–180 K.

View: Full Text HTML | Hi-Res PDF | PDF w/ Links

Tools

SciFinder Links

Explore by:

Author of this Article Any Author Research Topic

History

Just Accepted ManuscriptJanuary 12, 2012
Received: September 20, 2011
Revised: January 11, 2012

Recommend & Share

Related Content

Magnetically Triggered Multidrug Release by Hybrid Mesoporous Silica NanoparticlesChemistry of Materials
- Magnetically Triggered Multidrug Release by Hybrid Mesoporous Silica Nanoparticles
  Alejandro Baeza, Eduardo Guisasola, Eduardo Ruiz-Hernández, and María Vallet-Regí
  Chemistry of Materials 2012 24 (3), pp 517–524
  Abstract: The treatment of complex diseases such as cancer pathologies requires the simultaneously administration of several drugs in order to improve the effectiveness of the therapy and overwhelm the defensive mechanisms of tumor cells, responsible of the ...
  Abstract | Full Text HTML | PDF w/ Links | Hi-Res PDF
Controllable Synthesis of Undoped and Doped Calcium Niobate Nanocrystals for Tailored Structural, Electronic, and Luminescent PropertiesThe Journal of Physical Chemistry C
- Controllable Synthesis of Undoped and Doped Calcium Niobate Nanocrystals for Tailored Structural, Electronic, and Luminescent Properties
  Yiguo Su, Liman Peng, Chunfang Du, and Xiaojing Wang
  The Journal of Physical Chemistry C 2012 116 (1), pp 15–21
  Abstract: In this work, we report on the phase and particle size control of Ca₂Nb₂O₇ nanocrystals with an aim of tailoring structural, electronic, and luminescent properties. Using citric acid as the capping agent, the as-prepared nanocrystals exhibited a phase ...
  Abstract | Full Text HTML | PDF w/ Links | Hi-Res PDF
High Capacity MoO₂/Graphite Oxide Composite Anode for Lithium-Ion BatteriesThe Journal of Physical Chemistry Letters
- High Capacity MoO₂/Graphite Oxide Composite Anode for Lithium-Ion Batteries
  Yun Xu, Ran Yi, Bin Yuan, Xiaofei Wu, Marco Dunwell, Qianglu Lin, Ling Fei, Shuguang Deng, Paul Andersen, Donghai Wang, and Hongmei Luo
  The Journal of Physical Chemistry Letters 2012 3 (3), pp 309–314
  Abstract: Nanostructured MoO₂/graphite oxide (GO) composites are synthesized by a simple solvothermal method. X-ray diffraction and transmission electron microscopy analyses show that with the addition of GO and the increase in GO content in the precursor solutions,...
  Abstract | Full Text HTML | PDF w/ Links | Hi-Res PDF

Select a CAS section from the 5 main topical divisions below:

Article

Vapor Growth and Chemical Delithiation of Stoichiometric LiCoO₂ Crystals