Effect of Flame Retardants and Electrolyte Variations on Li-Ion Batteries

被引：4

作者：

Fulik, Natalia ^{[1
]}

Hofmann, Andreas ^{[1
]}

Noetzel, Dorit ^{[1
]}

Mueller, Marcus ^{[1
]}

Reuter, Ingo ^{[1
,2
]}

Mueller, Freya ^{[1
]}

Smith, Anna ^{[1
]}

Hanemann, Thomas ^{[1
,2
]}

机构：

[1] Karlsruhe Inst Technol, Inst Appl Mat Hermann von Helmholtz, Pl 1, D-76344 Eggenstein leopoldshafen, Germany

[2] Univ Freiburg, Dept Microsyst Engn, Georges Kohler Allee 102, D-79110 Freiburg, Germany

来源：

BATTERIES-BASEL | 2023年 / 9卷 / 02期

关键词：

lithium-ion battery; flame retardant; gas release; anode; electrolyte; CERAMIC-COATED SEPARATORS; THERMAL-DECOMPOSITION; RHEOLOGICAL PROPERTIES; ETHYLENE CARBONATE; LITHIUM OXALATE; SAFETY; CATHODE; STABILITY; PERFORMANCE; ADDITIVES;

D O I：

10.3390/batteries9020082

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Lithium-ion batteries are being increasingly used and deployed commercially. Cell-level improvements that address flammability characteristics and thermal runaway are currently being intensively tested and explored. In this study, three additives-namely, lithium oxalate, sodium fumarate and sodium malonate-which exhibit fire-retardant properties are investigated with respect to their incorporation into graphite anodes and their electro/chemical interactions within the anode and the cell material studied. It has been shown that flame-retardant concentrations of up to approximately 20 wt.% within the anode coating do not cause significant capacity degradation but can provide a flame-retardant effect due to their inherent, fire-retardant release of CO2 gas. The flame-retardant-containing layers exhibit good adhesion to the current collector. Their suitability in lithium-ion cells was tested in pouch cells and, when compared to pure graphite anodes, showed almost no deterioration regarding cell capacity when used in moderate (<= 20 wt.%) concentrations.

引用

页数：27

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