Synthesis of hollandite-type LiyMn1-xCoxO2 (x = 0-0.15) by Li+ ion-exchange in molten salt and the electrochemical property for rechargeable lithium battery electrodes
作者： Naoaki Kumagai , Satoru Oshitari , Shinichi Komaba , Yoshihiro Kadoma
DOI: 10.1016/J.JPOWSOUR.2007.06.221
关键词: Chemistry 、 Molten salt 、 Electrochemistry 、 Inorganic chemistry 、 Lithium oxide 、 Lithium 、 Ion 、 Hollandite 、 Lithium battery 、 Ion exchange
摘要: Abstract The Li + ion-exchange reaction of K -type α-K 0.14 MnO 1.93 ·0.18H 2 O and its Co-doped (Mn 0.85 Co 0.15 )O 1.96 ·0.21H with a large (2 × 2) tunnel structure has been investigated in LiNO 3 /LiCl molten salt at 300 °C. ion-exchanged products were examined by chemical analysis, X-ray diffraction, scanning transmission electron microscopic measurements. Almost all the ions hydrogens water molecules α-MnO one exchanged salt, resulting containing as well (lithium oxide) maintaining original hollandite structure. electrochemical properties including charge–discharge cycling samples have insertion compounds search for new cathode materials rechargeable lithium batteries. provided higher capacities than parent on initial discharge cyclings, probably due to structural stabilization existence tunnels.
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