Bulletin of the Korean Chemical Society

  • 제33권1호
  • /
  • Pages.65-68
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  • 2012
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Electrochemical Properties of Li1.1V0.75W0.075Mo0.075O2/Graphite Composite Anodes for Lithium-ion Batteries

  • Kim, Hyung-Sun (Energy Storage Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Kim, Sang-Ok (Energy Storage Research Center, Korea Institute of Science and Technology (KIST)) ;
  • Kim, Yong-Tae (School of Mechanical Engineering, Pusan National University) ;
  • Jung, Ji-Kwon (Department of Chemical Engineering, Chungbook National University) ;
  • Na, Byung-Ki (Department of Chemical Engineering, Chungbook National University) ;
  • Lee, Joong-Kee (Energy Storage Research Center, Korea Institute of Science and Technology (KIST))
  • 투고 : 2011.08.26
  • 심사 : 2011.10.31
  • 발행 : 2012.01.20
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초록

Novel type $Li_{1.1}V_{0.9-2x}W_xMo_xO_2$ powders were prepared by a solid-state reaction of $Li_2CO_3$, $V_2O_3$, $WO_2$ and $MoO_2$ precursors in a nitrogen atmosphere containing 10 mol % hydrogen gas, and assessed as anode materials in lithium-ion batteries. The specific charge and discharge capacities of the $Li_{1.1}V_{0.9-2x}W_xMo_xO_2$ anodes were higher than those of the bare $Li_{1.1}V_{0.9}O_2$ anode. The cyclic efficiency of these anodes was approximately 73.3% at the first cycle, regardless of the presence of W and Mo doping. The composite anode, which was composed of $Li_{1.1}V_{0.75}W_{0.075}Mo_{0.075}O_2$ (20 wt %) and natural graphite (80 wt %), demonstrated reasonable specific capacity, high cyclic efficiency, and good cycling performance, even at high rates without capacity fading.

키워드

참고문헌

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피인용 문헌

  1. Binder-free Sn/Graphene Nanocomposites Prepared by Electrophoretic Deposition for Anode Materials in Lithium Ion Batteries vol.34, pp.4, 2013, https://doi.org/10.5012/bkcs.2013.34.4.1199
  2. @C composites as promising anode materials for lithium-ion batteries vol.19, pp.13, 2017, https://doi.org/10.1039/C6CP08827A
  3. Li1.1V0.9O2/C Microspheres with Isomeric Core-Shell structure and their Improved Lithium Storage Performance for Lithium-Ion Batteries pp.21960216, 2018, https://doi.org/10.1002/celc.201801068