Effects of Cl doping on the structural and electrochemical properties of high voltage LiMn1.5Ni0.5O4 cathode materials for Li-ion batteries

被引：68

作者：

Kim, Won-Keun ^{[1
]}

Han, Dong-Wook ^{[1
]}

Ryu, Won-Hee ^{[1
]}

Lim, Sung-Jin ^{[1
]}

Eom, Ji-Yong ^{[2
]}

Kwon, Hyuk-Sang ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

[2] Korea Automot Technol Inst, Automot Mat Convergence & Syst R&D Div, Clean & Energy Mat R&D Ctr, Cheonan Si 330912, Chungnam, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 592卷

关键词：

LiMn1.5Ni0.5O4; Chlorine doping; High voltage cathode; Li-ion diffusivity; Li-ion batteries; LITHIUM; CAPACITY; LI1+XMN2-XO4; PERFORMANCE; LIMN2O4;

D O I：

10.1016/j.jallcom.2013.12.248

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：

LiMn1.5Ni0.5O4 and LiMn1.5Ni0.5O3.9Cl0.1 are prepared by a solution-based process to investigate the influences of Cl doping on the structural and electrochemical properties of high voltage LiMn1.5Ni0.5O4 cathode materials for Li-ion batteries. LiMn1.5Ni0.5O3.9Cl0.1 features an improved cyclic performance at 30 degrees C and 55 degrees C compared with LiMn1.5Ni0.5O4, which originates from the enhanced structural stability by formation of strong Mn-Cl and Ni-Cl bonds revealed by XPS analysis. The improvement in the rate capability of LiMn1.5Ni0.5O3.9Cl0.1 is attributed to the facilitated Li-ion diffusion in the lattice, due primarily to the larger ionic radius of Cl than that of O. From the GITT analysis, it is revealed that the Li-ion diffusivity of LiMn1.5Ni0.5O3.9Cl0.1 is improved about 2 times compared with that of LiMn1.5Ni0.5O4. The improved Li-ion diffusivity in the lattice is assigned to the increase in the lattice constant of LiMn1.5Ni0.5O3.9Cl0.1 compared with that of LiMn1.5Ni0.5O4 by the doping of Cl. (C) 2014 Elsevier B. V. All rights reserved.

引用

页码：48 / 52

页数：5

共 16 条

[1] Building better batteries [J].

Armand, M. ;

Tarascon, J. -M. .

NATURE, 2008, 451 (7179) :652-657

[2] Capacity fade of Li1+xMn2-xO4-based lithium-ion cells [J].

Chen, ZH ;

Amine, K .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (02) :A316-A320

[3] Synthesis and characterization of Li1+xMn2-xO4 for Li-ion battery applications [J].

Gao, Y ;

Dahn, JR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (01) :100-114

[4] IMPROVED CAPACITY RETENTION IN RECHARGEABLE 4V LITHIUM LITHIUM MANGANESE OXIDE (SPINEL) CELLS [J].

GUMMOW, RJ ;

DEKOCK, A ;

THACKERAY, MM .

SOLID STATE IONICS, 1994, 69 (01) :59-67

[5] LI METAL-FREE RECHARGEABLE LIMN2O4/CARBON CELLS - THEIR UNDERSTANDING AND OPTIMIZATION [J].

GUYOMARD, D ;

TARASCON, JM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1992, 139 (04) :937-948

[6] Effects of Li and Cl Codoping on the Electrochemical Performance and Structural Stability of LiMn2O4 Cathode Materials for Hybrid Electric Vehicle Applications [J].

Han, Dong-Wook ;

Ryu, Won-Hee ;

Kim, Won-Keun ;

Eom, Ji-Yong ;

Kwon, Hyuk-Sang .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (10) :4913-4919

[7] Crystal structure and cathode performance dependence on oxygen content of LiMn1.5Ni0.5O4 as a cathode material for secondary lithium batteries [J].

Idemoto, Y ;

Narai, H ;

Koura, N .

JOURNAL OF POWER SOURCES, 2003, 119 :125-129

[8] High-capacity, high-cycling cathode material synthesized by low-temperature solid-state coordination method for lithium rechargeable batteries Li1+xMn2O4-yFy [J].

Jiang, Rongrong ;

Huang, Yudai ;

Jia, Dianzeng ;

Wang, Lishi ;

Wang, Lei .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (07) :A698-A702

[9] 6Li and 7Li MAS NMR studies of lithium manganate cathode materials [J].

Lee, YJ ;

Wang, F ;

Grey, CP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (48) :12601-12613

[10] Effects of Co doping on Li[Ni0.5CoxMn1.5-x]O4 spinel materials for 5 V lithium secondary batteries via Co-precipitation [J].

Oh, Sung Woo ;

Myung, Seung-Taek ;

Kang, Han Byeol ;

Sun, Yang-Kook .

JOURNAL OF POWER SOURCES, 2009, 189 (01) :752-756

← 1 2 →