Journal of Inorganic Materials

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Ball-milling Synthesis and Electrochemical Study of Lithium (Transition) Metal Nitrides

WANG Ke; YANG Jun; XIE Jing-Ying; LIU Yu; WANG Bao-Feng   

  1. Energy Science and Technology Laboratory; Shanghai Institute of Microsystem and Information Technology; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2002-05-31 Revised:2002-08-06 Published:2003-07-20 Online:2003-07-20

Abstract: Lithium (transition) metal nitrides were synthesized by high-energy ball-milling technique. The obtained samples exhibit high electrochemical activity and reversibility.
The average capacity of Li2.6Co0.4N samples is ca. 880mAh·g-1 within the first 10 cycles. Li2.6Co0.2Cu0.2N sample has a capacity about
750mAh·g-1 after the first several cycles. 80% of its second cycle capacity can be retained at the 45th cycle. Li2.6Co0.2Fe0.2N sample
is a mixture of two or more phases including Li2.6Co0.4N. It has a capacity about 560 mAh·g-1 at the 40th cycle, 82% of its second cycle
capacity. Good cycling performance suggests that these compounds could be promising anode materials for lithium ion batteries.

Key words: ball-milling, lithium metal nitride, anode material, lithium-ion batteries

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