Morphological, structural, and electrochemical characteristics of LiNi0.5Mn0.4M0.1O2 (M = Li, Mg, Co, Al)
Morphological, structural, and electrochemical characteristics of LiNi0.5Mn0.4M0.1O2 (M = Li, Mg, Co, Al)
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DOI：
10.1016/j.jpowsour.2005.08.023
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发表时间：
2006-06-19
影响因子：
9.2
通讯作者：
Sato, Yuichi
中科院分区：
文献类型：
--
作者：
Li, Decheng;Sasaki, Yuki;Sato, Yuichi
采用固相反应法制备了LiNi0.5Mn0.4M0.1O2 （M =Li, Mg, Al, Co）化合物，并通过XRD、SEM、充放电测试和EIS对其结构、形貌和电化学性能进行了表征。外来离子的引入对LiNi0.5Mn0.5O2结构、形貌和电化学性能的影响取决于掺杂剂的种类。用Li、Mg、Co代替Mn可以增大晶粒尺寸，提高结晶度。LiNi0.5Mn0.4Li0.1O2和LiNi0.5Mn0.4Co0.1O2表现出增加的可逆容量和升级的速率能力。LiNi0.5Mn0.4Li0.1O2在50℃时的保持容量约为200mah g（-1）。(c) 2005 Elsevier B.V.版权所有。
LiNi0.5Mn0.4M0.1O2 (M =Li, Mg, Al, Co) compound was prepared by a solid-state reaction, and its structural, morphological and electrochemical properties were characterized by XRD, SEM, charge-discharge tests and EIS. The impacts of alien ion introduction on the structural, morphological and electrochemical properties of LiNi0.5Mn0.5O2 depend on the dopants. The substitution of Li, Mg, and Co for Mn can enlarge the particle size and improve the crystallinity. LiNi0.5Mn0.4Li0.1O2 and LiNi0.5Mn0.4Co0.1O2 show increased reversible capacities as well as upgraded rate capabilities. LiNi0.5Mn0.4Li0.1O2 exhibits a retentive capacity of about 200 mAh g(-1) at 50 degrees C. (c) 2005 Elsevier B.V. All rights reserved.