The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Electrochemical Properties of Spinel $LiMn_2O_4$ Synthesized at Various Heat Treatment for Lithium lon Battery

리튬 이온 전지용 스피넬 $LiMn_2O_4$의 열처리 온도에 따른 전기 화학적 특성

  • Han, Tae-Hee (Dept.of Electric Engineering, Chonbuk National University) ;
  • Min, Hyung-Sik (Korea Reserch Institute of Standards and Science) ;
  • Han, Byoung-Sung (Dept.of Electric Engineering, Chonbuk National University)
  • Published : 1999.03.01
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Abstract

In the past ten years, $LiMn_2O_4$-based spinels have been extensively studied as positive electrode materials for lithium-ion batteries. To improve the cycle performance of spinel $LiMn_2O_4$ as the cathode of 4V class lithium secondary batteries, spinel phases $LiMn_2O_4$ were prepared at various temperatures ranging form 600-900$^{\cire}C$ in air. The results showed that charge.dischare capacity of $LiMn_2O_4$ varied at 1st temperature from $200^{\circ}C to 600^{\circ}C$ increase with increasing temperature. $LiMn_2O_4$ synthesized at 2nd temperature $750^{\circ}C$excellent charge.discharge capacity, efficiency and cyclability compared to the samplesynthesized different temperatures. The value of lst charge.discharge capacity was 121mAh/g, 118mAh/g, Also, the efficiency value was about 97%.

Keywords

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