Phase transformation during synthesis of LiNi0.5Mn1.5O4 by oxalate co-precipitation

被引：5

作者：

Li, Yu ^{[1
]}

Gu, Yi-Jie ^{[1
]}

Chen, Yun-Bo ^{[2
]}

Liu, Hong-Quan ^{[1
]}

Ding, Jian-Xu ^{[1
]}

Wang, Yan-Ming ^{[1
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266510, Peoples R China

[2] China Acad Machinery Sci & Technol, Adv Manufacture Technol Ctr, Beijing 100044, Peoples R China

来源：

MATERIALS LETTERS | 2016年 / 180卷

基金：

中国国家自然科学基金;

关键词：

LiNi0.5Mn1.5O4; Cathode material; Phase transformation; LITHIUM-ION BATTERIES; CATHODE MATERIAL; PERFORMANCE; LIMN1.5NI0.5O4;

D O I：

10.1016/j.matlet.2016.05.116

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We synthesized LiNi0.5Mn1.5O4 with the Fd-3m space group by using oxalate co-precipitation. The structure and morphology, electrochemical properties of the obtained LiNi0.5Mn1.5O4 was investigated by XRD, SEM, galvanostatic charge/discharge testing and electrochemical impedance spectroscopy, respectively. Li/Ni antisite defects appeared in the disordered LiNi0.5Mn1.5O4. Using Rietveld refinement, we found that the second phase generated was Ni6MnO8 rather than LxNi1-xO. During the phase transformation, if sufficient Ni6MnO8 was produced, the spinel structure could not sustain more Li in the original crystal lattice, which generated an unstable structure in which excess Li existed in Li2MnO3. Due to the high capacity of Li2MnO3, the capacity of spinel LiNio5Mn1504 with Li2MnO3 is expected to further improve. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：105 / 108

页数：4

共 17 条

[1] Influence of chromium doping on the electrochemical performance of the 5 V spinel cathode LiMn1.5Ni0.5O4
Arunkumar, TA
Manthiram, A
[J]. ELECTROCHIMICA ACTA, 2005, 50 (28) : 5568 - 5572
[2] Chae JS, 2015, J IND ENG CHEM, V21, P731
[3] Effect of Lithium Deficiency on Lithium-Ion Battery Cathode LixNi0.5Mn1.5O4
Choi, Hyun Woo
Kim, Su Jae
Rim, Young-Hoon
Yang, Yong Suk
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2015, 119 (49) : 27192 - 27199
[4] Microwave rapid preparation of LiNi0.5Mn1.5O4 and the improved high rate performance for lithium-ion batteries
Gao, Po
Wang, Lu
Chen, Lin
Jiang, Xuefan
Pinto, Joao
Yang, Gang
[J]. ELECTROCHIMICA ACTA, 2013, 100 : 125 - 132
[5] LiNi0.5Mn1.5O4 synthesized through ammonia-mediated carbonate precipitation
Gu, Yi-Jie
Li, Yu
Fu, Yang
Zang, Qing-Feng
Liu, Hong-Quan
Ding, Jian-Xu
Wang, Yan-Ming
Wang, Hai-Feng
Ni, Jiangfeng
[J]. ELECTROCHIMICA ACTA, 2015, 176 : 1029 - 1035
[6] Crystal structure and cathode performance dependence on oxygen content of LiMn1.5Ni0.5O4 as a cathode material for secondary lithium batteries
Idemoto, Y
Narai, H
Koura, N
[J]. JOURNAL OF POWER SOURCES, 2003, 119 : 125 - 129
[7] Effect of the impurity LixNi1-xO on the electrochemical properties of 5 V cathode material LiNi0.5Mn1.5O4
Liu, G. Q.
Wen, L.
Wang, X.
Ma, B. Y.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (38) : 9377 - 9381
[8] Controllable synthesis of spinel lithium nickel manganese oxide cathode material with enhanced electrochemical performances through a modified oxalate co-precipitation method
Liu, Hongmei
Zhu, Guobin
Zhang, Li
Qu, Qunting
Shen, Ming
Zheng, Honghe
[J]. JOURNAL OF POWER SOURCES, 2015, 274 : 1180 - 1187
[9] Structure and stability of Li-Mn-Ni composite oxides as lithium ion sieve precursors in acidic medium
Ma Li-wen
Chen Bai-zhen
Shi Xi-chang
Zhang Wen
Yang Xi-yun
[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY, 2011, 18 (02): : 314 - 318
[10] The spinel and cubic rocksalt solid-solutions in the Li-Mn-Ni oxide pseudo-ternary system
McCalla, E.
Dahn, J. R.
[J]. SOLID STATE IONICS, 2013, 242 : 1 - 9

← 1 2 →