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High-capacity Li-excess lithium nickel manganese oxide as a Co-free positive electrode material
Materials Research Bulletin ( IF 5.3 ) Pub Date : 2021-05-01 , DOI: 10.1016/j.materresbull.2020.111178 Mitsuharu Tabuchi , Riki Kataoka , Koji Yazawa
Materials Research Bulletin ( IF 5.3 ) Pub Date : 2021-05-01 , DOI: 10.1016/j.materresbull.2020.111178 Mitsuharu Tabuchi , Riki Kataoka , Koji Yazawa
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Abstract For the design of high-capacity and Co-free positive electrode material, stoichiometric LiNi1/2Mn1/2O2 and Li-excess Li1+x(NiyMn1-y)1-xO2 (0 3 ¯ m), but the sample has a biphasic composite of main Li-poor Li1-xTM1+xO2 (TM, transition metal) and minor Li-rich Li1+xTM1-xO2 phases after calcination below 950 °C. The fraction of the minor Li-rich phase decreased concomitantly with increasing calcination temperature. Only at 1000 °C was single-phase LiNi1/2Mn1/2O2 obtainable. The biphasic samples exhibited better electrochemical performance than that for the single-phase sample. Based on this result, two Li-excess Li1+x(NiyMn1-y)1-xO2 (0
中文翻译：
高容量锂过量锂镍锰氧化物作为无钴正极材料
摘要 为设计高容量无 Co 正极材料，化学计量为 LiNi1/2Mn1/2O2 和 Li-excess Li1+x(NiyMn1-y)1-xO2 (0 3 ¯ m)，但样品具有双相在低于 950 °C 煅烧后，主要的贫锂 Li1-xTM1+xO2（TM，过渡金属）和少量富锂的 Li1+xTM1-xO2 相的复合材料。次要富锂相的比例随着煅烧温度的升高而降低。只有在 1000 °C 时才能获得单相 LiNi1/2Mn1/2O2。双相样品表现出比单相样品更好的电化学性能。基于这个结果，两个锂过量的 Li1+x(NiyMn1-y)1-xO2 (0
更新日期：2021-05-01
中文翻译：
高容量锂过量锂镍锰氧化物作为无钴正极材料
摘要 为设计高容量无 Co 正极材料，化学计量为 LiNi1/2Mn1/2O2 和 Li-excess Li1+x(NiyMn1-y)1-xO2 (0 3 ¯ m)，但样品具有双相在低于 950 °C 煅烧后，主要的贫锂 Li1-xTM1+xO2（TM，过渡金属）和少量富锂的 Li1+xTM1-xO2 相的复合材料。次要富锂相的比例随着煅烧温度的升高而降低。只有在 1000 °C 时才能获得单相 LiNi1/2Mn1/2O2。双相样品表现出比单相样品更好的电化学性能。基于这个结果，两个锂过量的 Li1+x(NiyMn1-y)1-xO2 (0
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