Synthesis and electrical properties of glassy and nanocrystalline LiFePO4

被引:2
作者
Gadomski, Krzysztof [1 ]
Buchberger, Dominika A. [2 ]
Pietrzak, Tomasz K. [1 ]
机构
[1] Warsaw Univ Technol, Fac Phys, Koszykowa 75, PL-00662 Warsaw, Poland
[2] Univ Warsaw, Fac Chem, Pasteura 1, PL-02093 Warsaw, Poland
关键词
Lithium iron phosphate; Amorphous analogue; Nanocrystallisation; Electrical conductivity; ELECTRONIC CONDUCTIVITY; PHOSPHO-OLIVINES; LITHIUM; MORPHOLOGY; PERFORMANCE; TRANSPORT; IMPACT;
D O I
10.1016/j.jnoncrysol.2023.122771
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Lithium iron phosphate (LFP) has been intensively studied as a cathode material for lithium-ion batteries. Mainly, polycrystalline or nanocrystalline LFP have been studied so far. Our approach is to synthesize glassy analogs of crystalline cathode materials and subject them to proper heat treatment to induce thermal nanocrystallization. In this paper, we attempted to synthesize amorphous LFP using the twin-rollers technique and improve its electrical properties. It was shown that in this approach LFP is on the verge of crystallization during quenching and most of the samples contained some traces of LFP crystallites. After optimization, the electrical conductivity of nanocrystalline samples reached ca. 10-5 S/cm at room temperature, and the activation energy decreased to 0.25 eV. Even though, the electrochemical performance of nanocrystalline LFP in laboratory Li cells in this work remained modest.
引用
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页数:6
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共 33 条
[1]   LiFePO4-carbon composites obtained by high-pressure studies on their structure and physical properties [J].
Aksienionek, Magdalena ;
Michalska, Monika ;
Wasiucionek, Marek ;
Lipinska, Ludwika ;
Mirkowska, Monika ;
Gierlotka, Stanislaw .
SOLID STATE IONICS, 2012, 225 :676-679
[2]   Li1+xFePO4 (x=0-0.5) production from Fe3+ sources by glass-ceramic technique with different carbon sources and investigation of structural, thermal and electrochemical performance [J].
Altin, E. ;
Altundag, S. ;
Gultek, E. ;
Altin, S. .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2022, 586
[3]   Fabrication and electrochemical performance of Ho-substituted C/LiFePO4: Improved battery performance [J].
Altin, Serdar ;
Yolun, Abdurrahman .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2021, 32 (16) :21568-21578
[4]   Ionic and electronic transport in single crystalline LiFePO4 grown by optical floating zone technique [J].
Amin, R. ;
Maier, J. ;
Balaya, P. ;
Chen, D. P. ;
Lin, C. T. .
SOLID STATE IONICS, 2008, 179 (27-32) :1683-1687
[5]   Electronically conductive phospho-olivines as lithium storage electrodes [J].
Chung, SY ;
Bloking, JT ;
Chiang, YM .
NATURE MATERIALS, 2002, 1 (02) :123-128
[6]   Lithium deintercalation in LiFePO4 nanoparticles via a domino-cascade model [J].
Delmas, C. ;
Maccario, M. ;
Croguennec, L. ;
Le Cras, F. ;
Weill, F. .
NATURE MATERIALS, 2008, 7 (08) :665-671
[7]   Impact of carbon structure and morphology on the electrochemical performance of LiFePO4/C composites [J].
Doeff, Marca M. ;
Wilcox, James D. ;
Yu, Rong ;
Aumentado, Albert ;
Marcinek, Marek ;
Kostecki, Robert .
JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2008, 12 (7-8) :995-1001
[8]   Pressure Evolution of Glass Transition Temperature in LiFePO4 [J].
Drozd-Rzoska, Aleksandra ;
Starzonek, Szymon ;
Rzoska, Sylwester J. ;
Bockowski, Michal ;
Garbarczyk, Jerzy E. .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2022, 13 (31) :7269-7272
[9]   Electrochemical Properties of Pristine and Vanadium Doped LiFePO4 Nanocrystallized Glasses [J].
Frackiewicz, Justyna E. ;
Pietrzak, Tomasz K. ;
Boczar, Maciej ;
Buchberger, Dominika A. ;
Wasiucionek, Marek ;
Czerwinski, Andrzej ;
Garbarczyk, Jerzy E. .
ENERGIES, 2021, 14 (23)
[10]   High electronic conductivity in nanostructured materials based on lithium-iron-vanadate-phosphate glasses [J].
Garbarczyk, Jerzy E. ;
Pietrzak, Tomasz K. ;
Wasiucionek, Marek ;
Kaleta, Anna ;
Dorau, Agata ;
Nowinski, Jan L. .
SOLID STATE IONICS, 2015, 272 :53-59