XRD observation on fully-charged Li[LixMn2-y]O4 in nonaqueous lithium cells

被引：10

作者：

Iwata, M ^{[1
]}

Takeda, S

Iwanaga, M

Ohzuku, T

机构：

[1] OCU, Grad Sch Engn, Dept Appl Chem, Sugimoto 3-3-138, Osaka 5588585, Japan

[2] Tosoh Corp, Technol Dev Dept, Yamaguchi 7468501, Japan

来源：

ELECTROCHEMISTRY | 2003年 / 71卷 / 12期

关键词：

manganese oxides; lithium cell; spinel; insertion materials;

D O I：

10.5796/electrochemistry.71.1187

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li[LiyMn2-y]O-4 (0less than or equal toy<1/3) having a spinel-framework structure was prepared and examined in nonaqueous lithium cells in wide voltage range of 1.0 to 5.2 V. Li[LiyMn2-y]O-4 can be used as a positive electrode with rechargeable capacities of 50-120 mAh/g depending on y in Li[LiyMn2-y]O-4 for 4-volt class of lithium-ion batteries with a graphite negative-electrode. A redox signal at 5.0 V was observed for all samples except stoichiometric LiMn2O4. The X-ray examinations on the charged samples at 5.2 V vs. Li gave a structural parameter of 8.04-8.05 Angstrom regardless of y in Li [LiyMn2-y]O-4. In addition to the redox potentials of 3.0, 4.0 and 5.0 V, we found a redox potential of about 1.8 V at which one-phase reaction proceeded in a tetragonal phase.

引用

页码：1187 / 1191

页数：5

共 17 条

[11] A 3-volt lithium-ion cell with Li[Ni1/2Mn3/2]O4 and Li[Li1/3Ti5/3]O4:: A method to prepare stable positive-electrode material of highly crystallized Li[Ni1/2Mn3/2]O4
Ohzuku, T
Ariyoshi, K
Yamamoto, S
Makimura, Y
[J]. CHEMISTRY LETTERS, 2001, (12) : 1270 - 1271
[12] Comparative study of Li[LixMn2-x]O4 and LT-LiMnO2 for lithium-ion batteries
Ohzuku, T
Kitano, S
Iwanaga, M
Matsuno, H
Ueda, R
[J]. JOURNAL OF POWER SOURCES, 1997, 68 (02) : 646 - 651
[13] Synthesis and characterization of 5 V insertion material of Li[FeyMn2-y]O4 for lithium-ion batteries
Ohzuku, T
Ariyoshi, K
Takeda, S
Sakai, Y
[J]. ELECTROCHIMICA ACTA, 2001, 46 (15) : 2327 - 2336
[14] Solid-state redox potentials for Li[Me1/2Mn3/2]O4 (Me: 3d-transition metal) having spinel-framework structures:: a series of 5 volt materials for advanced lithium-ion batteries
Ohzuku, T
Takeda, S
Iwanaga, M
[J]. JOURNAL OF POWER SOURCES, 1999, 81 : 90 - 94
[15] POSITIVE ELECTRODE MATERIALS WITH HIGH OPERATING VOLTAGE FOR LITHIUM BATTERIES - LICRYMN2-YO4 (0-LESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-1)
SIGALA, C
GUYOMARD, D
VERBAERE, A
PIFFARD, Y
TOURNOUX, M
[J]. SOLID STATE IONICS, 1995, 81 (3-4) : 167 - 170
[16] SYNTHESIS CONDITIONS AND OXYGEN STOICHIOMETRY EFFECTS ON LI INSERTION INTO THE SPINEL LIMN2O4
TARASCON, JM
MCKINNON, WR
COOWAR, F
BOWMER, TN
AMATUCCI, G
GUYOMARD, D
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (06) : 1421 - 1431
[17] Synthesis and electrochemistry of LiNixMn2-xO4
Zhong, QM
Bonakdarpour, A
Zhang, MJ
Gao, Y
Dahn, JR
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (01) : 205 - 213

← 1 2 →