Synthesis and performance of Mn-doped Li3Fe2(PO4)3materials

被引：0

作者：

Song, Cui-Huan ^{[1
,2
]}

Sun, Jun-Kang ^{[2
]}

Huang, Fu-Qiang ^{[2
]}

Liu, Zhan-Qiang ^{[2
]}

He, Pin-Gang ^{[1
]}

机构：

[1] Chemistry Department, East China Normal University, Shanghai 200062, China

[2] Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

来源：

Gongneng Cailiao/Journal of Functional Materials | 2009年 / 40卷 / 04期

关键词：

Lithium-ion batteries - Manganese - Cathodes - Solid state reactions - Electric discharges;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The monoclinic Li3+xFe2-xMnxII(PO4)3(x=0-0.1), Li3Fe1.95Mn0.05III(PO4)3and Li2.95Fe1.95Mn0.05IV(PO4)3cathodes were synthesized by solid state reaction. The synthesized powders were ball-milled with acethylene carbon to reduce the particle sizes and improve the electronic conductivity of the active materials. The galvanostatic charge/discharge test and the cyclic voltammetry (C-V) revealed that all of them had two plateau potentials of Fe3+/Fe2+couple vs. Li/Li+at 2.8 and 2.7 V upon discharge. The plateau potential of Mn3+/Mn2+at 3.5 V was observed in Li3+xFe2-xMnxII(PO4)3and Li3Fe1.95Mn0.05III(PO4)3cathodes. Furthermore, the Mn doping was demonstrated to be able to improve the electrochemical performances of the cathodes. In all the samples, the Li3.05Fe1.95MnII0.05 (PO4)3/C cathode showed the best electrochemical performances and possessed the discharge capacities of 110 mAh/g at C/20 and 66 mAh/g at C/2.

引用

页码：604 / 607

共 50 条

[11] Ionic conductivity of isostructural crystals of the superionic conductors Li3Fe2(PO4)4 and Li3Sc2(PO4)3
Ivanov-Shits, A. K.
Physics of the Solid State, 39 (01):
[12] Ionic conductivity of isostructural crystals of the superionic conductors Li3Fe2(PO4)(4) and Li3Sc2(PO4)(3)
IvanovShits, AK
PHYSICS OF THE SOLID STATE, 1997, 39 (01) : 72 - 74
[13] CRYSTAL-STRUCTURE OF THE LI3FE2(PO4)3 MONOCLINIC MODIFICATION
MAXIMOV, BA
MURADIAN, LA
GENKINA, EA
SIMONOV, VI
DOKLADY AKADEMII NAUK SSSR, 1986, 288 (03): : 634 - 638
[14] Ionic conductivity of isostructural crystals of the superionic conductors Li3Fe2(PO4)4 and Li3Sc2(PO4)3
A. K. Ivanov-Shits
Physics of the Solid State, 1997, 39 : 72 - 74
[15] Anisotropy of ionic conductivity in Li3Fe2(PO4)(3) single crystals
IvanovSchitz, AK
Timofeeva, VA
CRYSTALLOGRAPHY REPORTS, 1997, 42 (03) : 435 - 437
[16] Analysis of the 7Li NMR signals in the Monoclinic Li3Fe2(PO4)3 and Li3V2(PO4)3 Phases
Castets, A.
Carlier, D.
Trad, K.
Delmas, C.
Menetrier, M.
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (44): : 19141 - 19150
[17] ATOMIC-STRUCTURE OF BETA-PHASE OF LI3SC2(PO4)3 AND LI3FE2(PO4)3 CRYSTALS
KONDRATIUK, IP
MAXIMOV, BA
MURADIAN, LA
DOKLADY AKADEMII NAUK SSSR, 1987, 292 (06): : 1376 - 1379
[18] THERMALLY-INDUCED LITHIUM DISORDER IN LI3FE2(PO4)3
SIGARYOV, SE
TERZIEV, VG
PHYSICAL REVIEW B, 1993, 48 (22): : 16252 - 16255
[19] SOME FEATURES OF LI+-ION DISTRIBUTION IN MONOCLINIC MODIFICATIONS OF LI3SC2(PO4)3, LI3FE2(PO4)3, LI3IN2(PO4)3 SUPERIONIC CONDUCTORS
SIGARYOV, SE
GENKINA, EA
MAXIMOV, BA
SOLID STATE IONICS, 1990, 37 (04) : 261 - 265
[20] AN X-RAY STRUCTURAL INVESTIGATION OF MICROTWINNING OF LI3SC2(PO4)3 AND LI3FE2(PO4)3 CRYSTALS
KONDRATYUK, IP
SIROTA, MI
MAKSIMOV, BA
MURADYAN, LA
SIMONOV, VI
KRISTALLOGRAFIYA, 1986, 31 (03): : 488 - 494

← 1 2 3 4 5 →