Electrochemical characteristics of layered LiNi1/3Co1/3Mn1/3O2 and with different synthesis conditions

Ping He*, Haoran Wang, Lu Qi, Tetsuya Osaka

*この研究の対応する著者

研究成果: Article査読

81 被引用数 (Scopus)

抄録

LiNi1/3Mn1/3Co1/3O2 had been successfully prepared from spherical composite carbonate via a simple uniform-phase precipitation method [P. He, H. Wang, L. Qi, T. Osaka, J. Power Sources, in press] at normal pressure, using nickel, cobalt and manganese sulfate and ammonia bicarbonate as reactants. The preparation of spherical composite carbonate was significantly dependant on synthetic condition, such as the reaction temperature, feed rate, molar ratio of these reactants, etc. The optimized condition resulted in spherical composite carbonate of which the particle size distribution was uniform, as observed by scanning electronic microscopy (SEM). Calcination of the uniform composite carbonate with lithium carbonate at high temperature led to a well-ordered layer structured LiNi1/3Mn1/3Co1/3O2 as confirmed by X-ray diffraction (XRD), without obvious change in shape. Due to the homogeneity of the composite carbonate, the final product, LiNi1/3Mn1/3Co1/3O2, was also significantly uniform, i.e., the average particle size was of about 10 μm in diameter and the distribution was relatively narrow. As a result, the corresponding tap density was also high, approximately 2.32 g cm-3, of which the value is very near to that of commercialized LiCoO2. In the voltage range of 2.8-4.2, 2.8-4.35 and 2.8-4.5 V, the discharge capacities of LiNi1/3Mn1/3Co1/3O2 electrode were 159, 168 and 179 mAh g-1, respectively, with good cyclability.

本文言語English
ページ(範囲)627-632
ページ数6
ジャーナルJournal of Power Sources
160
1
DOI
出版ステータスPublished - 2006 9月 29

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術
  • 物理化学および理論化学
  • 電子工学および電気工学

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