Phase transitions in Li1-δNi0.5Mn1.5O4 during cycling at 5 v

被引：123

作者：

Kim, JH ^{[1
]}

Yoon, CS

Myung, ST

Prakash, J

Sun, YK

机构：

[1] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea

[2] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea

[3] Iwate Univ, Dept Chem Engn, Morioka, Iwate 0208551, Japan

[4] IIT, Dept Chem Environm Engn, Chicago, IL 60616 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 07期

关键词：

D O I：

10.1149/1.1753252

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Structural change of LiNi0.5Mn1.5O4 with two different crystallographic structures of Fd (3) over barm and P4(3)32 was studied during Li extraction. Ex situ X-ray diffraction and transmission electron microscopy studies on partially delithiated Li1-deltaNi0.5Mn1.5O4 revealed that LiNi0.5Mn1.5O4 (Fd (3) over barm) structure lost its characteristic diagonal glide symmetry, suggesting a structural transition arising from the possible migration of cations during oxidation from Ni2+ to Ni4+. For the Li1-deltaNi0.5Mn1.5O4 (P4(3)32), ordering of cations was destroyed by random migration of cations during Li extraction, resulting in the formation of intermediate phase with the Fd (3) over barm structure. The phase transitions were reversible, meaning that migration of cations is highly reversible during lithiation/delithiation. (C) 2004 The Electrochemical Society.

引用

页码：A216 / A220

页数：5

共 22 条

[1] Optimizing preparation conditions for 5 V electrode performance, and structural changes in Li1-xNi0.5Mn1.5O4 spinel [J].

Alcántara, R ;

Jaraba, M ;

Lavela, P ;

Tirado, JL .

ELECTROCHIMICA ACTA, 2002, 47 (11) :1829-1835

[2] A new three-volt spinel Li1+xMn1.5Ni0.5O4 for secondary lithium batteries [J].

Amine, K ;

Tukamoto, H ;

Yasuda, H ;

Fujita, Y .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (05) :1607-1613

[3]

ARIYOSHI K, 2003, ELECTROCHEMICAL SOC

[4]

BLASSE G, 1964, PHILIPS RES REP S3, V19, P1

[5] TEM studies:: The key for understanding the origin of the 3.3 V and 4.5 V steps observed in LiMn2O4-based spinels [J].

Dupont, L ;

Hervieu, M ;

Rousse, G ;

Masquelier, C ;

Palacín, MR ;

Chabre, Y ;

Tarascon, JM .

JOURNAL OF SOLID STATE CHEMISTRY, 2000, 155 (02) :394-408

[6] 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

[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] Dissolution of spinel oxides and capacity losses in 4V Li/LixMn2O4 coils [J].

Jang, DH ;

Shin, YJ ;

Oh, SM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (07) :2204-2211

[9] Molten salt synthesis of LiNi0.5Mn1.5O4 spinel for 5 V class cathode material of Li-ion secondary battery [J].

Kim, JH ;

Myung, ST ;

Sun, YK .

ELECTROCHIMICA ACTA, 2004, 49 (02) :219-227

[10] Preparation and characterization of nano-crystalline LiNi0.5Mn1.5O4 for 5 V cathode material by composite carbonate process [J].

Lee, YS ;

Sun, YK ;

Ota, S ;

Miyashita, T ;

Yoshi, M .

ELECTROCHEMISTRY COMMUNICATIONS, 2002, 4 (12) :989-994

← 1 2 3 →