Journal of Electrochemical Science and Technology

  • 제2권3호
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  • Pages.180-185
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  • 2011
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  • 2093-8551(pISSN)
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  • 2288-9221(eISSN)
한국전기화학회 (The Korean Electrochemical Society)
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The Synthesis and Electrochemical Properties of Lithium Manganese Oxide (Li2MnO3)

  • Seo, Hyo-Ree (Department of Chemistry, Korea University) ;
  • Lee, Eun-Ah (Department of Chemistry, Korea University) ;
  • Yi, Cheol-Woo (Department of Chemistry, Sungshin Women's University) ;
  • Kim, Ke-On (Department of Chemistry, Korea University)
  • 투고 : 2011.09.17
  • 심사 : 2011.09.25
  • 발행 : 2011.09.30
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초록

The layered lithium-manganese oxide ($Li_2MnO_3$) as a cathode material of lithium ion secondary batteries was prepared and characterized the physico-chemical and electrochemical properties. The morphological and structural changes of MnO(OH) and $Li_2MnO_3$ are closely connected to the changes of electrochemical properties. The crystallinity of $Li_2MnO_3$ is enhanced as the annealing temperature increase, but its capacity is reduced due to the easier structural changes of less crystalline $Li_2MnO_3$ than highly crystalline one. Moreover, the addition of buffer material such as MnO(OH) into cathode causes to reduce the morphological and structural changes of layered $Li_2MnO_3$ and increase the discharge capacity and cycleability.

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  2. Electrochemical properties of Co-less layered transition metal oxide as high energy cathode material for Li-ion batteries vol.31, pp.5, 2014, https://doi.org/10.1007/s11814-014-0046-y
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  4. Facile Synthesis of Platelike Hierarchical Li1.2Mn0.54Ni0.13Co0.13O2 with Exposed {010} Planes for High-Rate and Long Cycling-Stable Lithium Ion Batteries vol.8, pp.39, 2016, https://doi.org/10.1021/acsami.6b08835
  5. Effects of transition metal doping and surface treatment to improve the electrochemical performance of Li2MnO3 vol.30, pp.3, 2013, https://doi.org/10.1007/s10832-012-9778-4
  6. Direct bromination of hydrocarbons catalyzed by Li2MnO3 under oxygen and photo-irradiation conditions vol.3, pp.7, 2013, https://doi.org/10.1039/c2ra22197g
  7. Microwave-assisted hydrothermal synthesis of electrochemically active nano-sized Li2MnO3 dispersed on carbon nanotube network for lithium ion batteries vol.591, 2014, https://doi.org/10.1016/j.jallcom.2013.12.206
  8. Boron-doped Li1.2Mn0.6Ni0.2O2 as a cathode active material for lithium ion battery vol.281, 2015, https://doi.org/10.1016/j.ssi.2015.09.008