Effect of fluoroethylene carbonate on high temperature capacity retention of LiMn2O4/graphite Li-ion cells

Ryou, Myung‐Hyun; Han, Gui Young; Lee, Yong Min; Lee, Je-Nam; Lee, Dong Jin; Yoon, Yeo Ok; Park, Jung-Ki

doi:10.1016/j.electacta.2009.11.036

Cited by 161 publications

(135 citation statements)

References 24 publications

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“…These features, especially, along with their low cost and environmental benignity, render them an attractive substitute for lead-acid batteries in battery-operated motor or EV. However, LiMn 2 O 4 based battery suffers from poor cyclic capability, especially at elevated temperatures (above 55 • C) [1][2][3][4][5][6][7][8][9][10]. This drawback is mainly related to continuous growth of cell impedance and Mn dissolution caused by the harmful components (LiF and HF) from the decomposing reaction of the LiPF 6 salt at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Spinel-type lithium manganese oxide (LiMn 2 O 4 ) is one of the most promising cathode materials for large-format lithium ion batteries for electric vehicles (EV) due to its cost-effectiveness, facile production, high discharge voltage plateau (∼4.0 V vs. Li/Li + ) and environmental benignity compared to other cathode materials [1][2][3]. Moreover, the LiMn 2 O 4 battery can deliver much higher energy density more than 200Wh/kg in order to meet the requirement of EV long driving ranges when compared to the corresponding lithium ion batteries (150Wh/kg).…”

Section: Introductionmentioning

confidence: 99%

“…A variety of strategies have been taken to improve cycling capability of LiMn 2 O 4 based electrodes such as doping [4][5][6][7], surface coating [8][9][10][11][12][13] and functional additives in the electrolyte [1,[14][15][16][17][18][19] at elevated temperatures [20,21]. Ionic liquid-based electrolyte and single-ion-conducting nanocomposite polymer electrolytes are also very promising candidates to solve the LiMn 2 O 4 cycling problems [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A single-ion gel polymer electrolyte system for improving cycle performance of LiMn2O4 battery at elevated temperatures

Qin

Liu

Ding

et al. 2014

Electrochimica Acta

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a b s t r a c tThe LiMn 2 O 4 based lithium batteries using commercially available electrolytes suffer from poor cycling performance at elevated temperatures (above 55• C). This is mainly caused by the Mn dissolution generated from HF thermally decomposed from the LiPF 6 salt at elevated temperatures. In this paper, a single-ion gel polymer electrolyte (polymeric lithium tartaric acid borate @ poly(vinylidene fluoride-cohexafluoropropylene) was explored for improving the cycling performance of the LiMn 2 O 4 based lithium battery at elevated temperatures owing to superior thermal stability and comparable ionic conductivity. It was manifested that the Li/LiMn 2 O 4 cells using this single-ion gel polymer electrolyte showed stable charge/discharge voltage profiles, preferable rate capability and excellent cycling performance both at room temperature and elevated temperature of 55• C. The dissolution of metallic Mn in this electrolyte is significantly suppressed than that of LiPF 6 electrolyte. These superior performances could endow this single-ion gel polymer electrolyte a promising alternative to the conventional liquid electrolyte system in the LiMn 2 O 4 battery at elevated temperatures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A single-ion gel polymer electrolyte system for improving cycle performance of LiMn2O4 battery at elevated temperatures

Qin

Liu

Ding

et al. 2014

Electrochimica Acta

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“…However, the effect of FEC on the cathode performance has been less investigated. Ryou et al [7] demonstrated that addition of FEC improve the capacity retention of LiMn 2 O 4 /graphite cell at 60 °C. This positive effect is originated from the SEI film formed on the graphite surface.…”

Section: Introductionmentioning

confidence: 99%

Enhanced electrochemical performance of high voltage spinel cathode by using fluoroethylene carbonate as an electrolyte additive

Chen¹,

Zhang²,

Li³

2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

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Keywords: Lithium ion battery, electrolyte additive, fluoroethylene carbonate, spinel cathode. Abstract. Spinel LiNi 0.5 Mn 1.5 O 4 cathode has attracted considerable attention because of its high energy density and operating potential. However, current carbonate electrolytes cannot meet the demand of this high voltage cathode. Here, we demonstrate that fluoroethylene carbonate (FEC) substantially improve the electrochemical performance of LiNi 0.5 Mn 1.5 O 4 cathode. In presence of 2 wt % FEC, Li/LiNi 0.5 Mn 1.5 O 4 cell exhibits an improved discharge capacity retention of 90.3% after 200 cycles at room temperature. When cycled at 55 °C, the cell with FEC achieves discharge capacity retention of 92.8% after 100 cycles comparing of 72.7% of the cell without FEC. Our investigation reveals that FEC alleviates the electrolyte decomposition under high voltage and temperature conditions and forms a less resistive film on the cathode surface.

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“…Here we try to investigate the addition effect of FEC into carbonate-based electrolytes which were contained against activated carbon electrodes. Fluoroethylene carbonate (FEC) has been studied as a SEI film-formation additive to improve cycle performance of lithium-ion battery at room temperature, [14][15][16][17] but almost no literatures were focused on the influence of FEC in electrochemical double-layer capacitors (EDLCs). In this paper, FEC was introduced as a modifier to improve ionic property of mixture electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Fluoroethylene Carbonate Addition Effect on Electrochemical Properties of Mixed Carbonate-based Organic Electrolyte Solution for a Capacitor

Kim¹,

Kim²,

Yang³

et al. 2014

Bulletin of the Korean Chemical Society

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In this paper, organic solvent electrolytes were prepared by a mixture of propylene carbonate (PC), dimethyl carbonate (DMC), tetraethylammonium tetrafluoroborate (TEABF 4 ) as a salt, and by containing a different content of fluoroethylene carbonate (FEC) as an additive agent. The aim of this paper is to evaluate the ionic properties of propylene carbonate (PC)/dimethyl carbonate (DMC) mixtures as solvents for a capacitor application, in view of improving the electrochemical performances. The bulk resistance and interfacial resistance of the mixture electrolytes were investigated using an AC impedance method. The morphology of carbon-based electrodes which were contained in different electrolytes was analyzed by scanning electron microscopy (SEM) method. From the experimental results, by increasing the FEC content, capacitance of electrodes was increased, and the interfacial resistance was decreased. In particular, by a content of 2 vol % FEC in 0.2 M TEABF 4 PC/DMC solvent, the electrolyte showed the superior capacitance. However, when FEC content exceeds 2 vol %, the capacitance was decreased and the interfacial resistance was increased.

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Effect of fluoroethylene carbonate on high temperature capacity retention of LiMn2O4/graphite Li-ion cells

Cited by 161 publications

References 24 publications

A single-ion gel polymer electrolyte system for improving cycle performance of LiMn2O4 battery at elevated temperatures

A single-ion gel polymer electrolyte system for improving cycle performance of LiMn2O4 battery at elevated temperatures

Enhanced electrochemical performance of high voltage spinel cathode by using fluoroethylene carbonate as an electrolyte additive

Fluoroethylene Carbonate Addition Effect on Electrochemical Properties of Mixed Carbonate-based Organic Electrolyte Solution for a Capacitor

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