Characteristics of twins in Li(Ni0.67Co0.33)O2 as a cathode material for lithium-ion batteries

被引：3

作者：

Ai, YanLing ^{[1
]}

Zhang, M. Q. ^{[1
]}

Jiang, F. ^{[1
]}

Zhang, Ruizhi ^{[1
]}

Liu, Jun ^{[1
]}

Wang, C. ^{[1
]}

Xiao, W. H. ^{[1
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 791卷

基金：

中国国家自然科学基金;

关键词：

Li (Ni0.67Co0.33)O-2 phase; 1(1)over-bar0(4)over-bartwin; Orientation domain; R(3)over-barmspace group; ELECTROCHEMICAL PROPERTIES; ELECTRODE; DOMAINS; COBALT;

D O I：

10.1016/j.jallcom.2019.03.376

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Based on XRD, SEM and TEM studies of the obtained Li (Ni0.62Co0.33)O-2 phase from sintering, the results show that the space group of the phase is R (3) over barm, which belongs to the rhombohedral lattice, and there are observed many twins with 1 (1) over bar0 (4) over bar as twining plane in the crystal. When Li (Ni0.62Co0.33)O-2 phase is forming twins with 1 (1) over bar0 (4) over bar as twinning plane, the octahedrons in the twinning plane need not to make any adjustment. At the same time, the 1 (1) over bar0 (4) over bar interface f is close-packed plane for Li, (Ni, Co) and O atoms, moreover, the interface energy maybe the lowest if the 1 (1) over bar0 (4) over bar plane is used as an interface. Crystallographic analysis showed that when the twins with 1 (1) over bar0 (4) over bar as twinning plane were formed in Li (Ni0.62Co0.33)O-2 phase, orientation relationship between the two twin sub-grains can also be considered as two variants of the orientation domain. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：1167 / 1175

页数：9

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