A Single-Source Co/Li/O Organometallic Precursor for Nanocrystalline LiCoO2 - Synthesis, Formation Pathway, and Electrochemical Performance

作者：Khanderi Jayaprakash; Schneider Joerg J^*

来源：European Journal of Inorganic Chemistry, 2010, (29): 4591-4594.

DOI：10.1002/ejic.201000474

• Nanoparticles
• Electrochemistry
• Cobalt
• Lithium
• Single-source precursors

A single-source precursor route to phase-pure LiCoO2 by employing the organometallic precursor [(COD)(2)CoLi(thf)(2)] (1) to introduce a Co/Li/O 1:1:2 stoichiometry is described for the first time. Compound 1 undergoes decomposition in the presence of oxygen, forming nanoscaled, electrochemically active LiCoO2 starting at a temperature as low as 200 degrees C. Its temperature-dependent formation pathway was studied by various spectroscopic and microscopic techniques. The transition temperature for the evolution of layered LiCoO2 is above 400 degrees C. Electrochemical studies indicate that the low-temperature modification of LiCoO2 can be obtained at 500 degrees C, showing moderate electrochemical battery performance.

• 出版日期2010-10