X-ray absorption spectroscopic investigations of LixMn2O4

被引：0

作者：

Cairns, EJ ^{[1
]}

Horne, CR ^{[1
]}

Weiss, BJR ^{[1
]}

Grush, MM ^{[1
]}

Cramer, SP ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Energy & Environm, Berkeley, CA 94720 USA

来源：

NEW MATERIALS FOR FUEL CELL AND MODERN BATTERY SYSTEMS II | 1997年

关键词：

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This paper discusses the evolution of atomic and electronic structure in LixMn2O4 electrodes as determined by Mn XANES and EXAFS. Varying lithium content was accomplished through coulombic titration of LiMn2O4 within a Li cell containing non-aqueous liquid electrolyte. We have found that there is a significant influence of the electronic structure on this material system. In particular, the Mn(III) sites in LiMn2O4 are subject to a dynamic Jahn-Teller effect. Additionally, the XANES spectrum of LixMn2O4 (x = 1.8 and 2.0) is consistent with a square-planar [Mn(III)O-6] compound whereas the atomic structure, confirmed by EXAFS, suggests that the [Mn(III)O-6] are tetragonally-distorted.

引用

页码：336 / 347

页数：4

共 50 条

[1] LixMn2O4 thin films characterization by X-ray, electrical conductivity and XANES
Meneses, CT
Macedo, MA
Vicentin, FC
[J]. MICROELECTRONICS JOURNAL, 2003, 34 (5-8) : 561 - 563
[2] Electronic structure of chemically-prepared LixMn2O4 determined by Mn X-ray absorption and emission spectroscopies
Horne, CR
Bergmann, U
Grush, MM
Perera, RCC
Ederer, DL
Callcott, TA
Cairns, EJ
Cramer, SP
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (41): : 9587 - 9596
[3] In situ synchrotron X-ray diffraction studies of the phase transitions in LixMn2O4 cathode materials
Yang, XQ
Sun, X
Lee, SJ
McBreen, J
Mukerjee, S
Daroux, ML
Xing, XK
[J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 1999, 2 (04) : 157 - 160
[4] Lithium insertion in LixMn2O4, 0<x<4
Koksbang, R
Barker, J
Saidi, MY
West, K
ZachauChristiansen, B
Skaarup, S
[J]. SOLID STATE IONICS, 1996, 83 (1-2) : 151 - 157
[5] Crystallographic structure of LixMn2O4
Molenda, J
Swierczek, K
Marzec, J
Przewoznik, J
Kapusta, C
[J]. VII NATIONAL SYMPOSIUM ON FAST ION CONDUCTORS, 2000, 27 : 81 - 84
[6] DIFFUSION ENHANCEMENT IN LIXMN2O4
CHEN, LQ
HUANG, XJ
KELDER, E
SCHOONMAN, J
[J]. SOLID STATE IONICS, 1995, 76 (1-2) : 91 - 96
[7] Redox orbitals in LixMn2O4 (0<x<2) studied by X-ray Compton scattering
Suzuki, K.
Minegishi, K.
Hamano, K.
Sakurai, H.
Barbiellini, B.
Bansil, A.
Orikasa, Y.
Uchimoto, Y.
Itou, M.
Sakurai, Y.
Kaprzyk, S.
Wang, Y.
Yamamoto, K.
[J]. ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2014, 70 : C1556 - C1556
[8] The nature of the phase transition in LixMn2O4
Marzec, J
Marzec, M
Molenda, J
[J]. NEW TRENDS IN INTERCALATION COMPOUNDS FOR ENERGY STORAGE, 2002, 61 : 489 - 492
[9] Thermal characteristics of LixMn2O4 spinel
Kim, JS
Prakash, J
Selman, JR
[J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (09) : A141 - A144
[10] Vibrational Studies of Spinel LixMn2O4 (0.3≤x≤1.0) Cathodes
Julien, C.
Perez-Vicente, C.
Nazri, G. A.
[J]. IONICS, 1996, 2 (5-6) : 468 - 473

← 1 2 3 4 5 →