Characterization on the exothermic behaviors of cathode materials reacted with ethylene carbonate in lithium-ion battery studied by differential scanning calorimeter (DSC)

Duh, Yih-Shing; Lee, Chih-Yi; Chen, Yuling; Kao, Chen-Shan

doi:10.1016/j.tca.2016.09.007

Cited by 17 publications

(8 citation statements)

References 29 publications

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“…3 that strongly suggest production of Co metal via Reaction 8 (green crosses). 7,16,[20][21][22][23] This is confirmed in one of the source studies 7 and elsewhere 3 using XRD after the end of the ARC or DSC measurement. Reaction 8 may not happen for commercial cells under most conditions because they are designed to vent when pressurized, which drastically reduces the availability of CO 2 as a reactant.…”

Section: Comparisons To Published Calorimetry Datasupporting

confidence: 59%

“…The multistep data represented by the orange open squares in Fig. 3 is close to either Reaction 1 or Reaction 2 (with products of CoO or Co 3 O 4 , respectively) 3,7,11,16,[19][20][21][22][23] because the conversion from Co 3 O 4 to CoO with solvent oxidation has a very minor thermal effect (e.g., Reaction 3 accounts for 5% of total Reaction 1 heat release). CoO has been identified more often from XRD measurements compared to than Co 3 O 4 , 3,7,9,16,24,25 so it appears that the second major step of LCO decomposition for x ⩾ 0.5 can be adequately represented by Reaction 6.…”

Section: Comparisons To Published Calorimetry Datamentioning

confidence: 76%

“…6 are consistent with this proposed sequence; the choice to plot Reaction 10 rather than Reaction 9 improves agreement with data at low degrees of lithiation. Discrepancies between the data and calculated lines are considered in Appendix C. S-2) 19,23,[27][28][29][30][32][33][34][35]36 compared to ideal phase changes with EMC oxidation (filled symbols are from studies with widely varying state of charge). 30,32 An aspect of the NCA data in Fig.…”

Section: Comparisons To Published Calorimetry Datamentioning

confidence: 99%

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A Thermodynamic Reassessment of Lithium-Ion Battery Cathode Calorimetry

Shurtz

2020

J. Electrochem. Soc.

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This work demonstrates how staged heat release from layered metal oxide cathodes in the presence of organic electrolytes can be predicted from basic thermodynamic properties. These prediction methods for heat release are an advancement compared to typical modeling approaches for thermal runaway in lithium-ion batteries, which tend to rely exclusively on calorimetry measurements of battery components. These calculations generate useful new insights when compared to calorimetry measurements for lithium cobalt oxide (LCO) as well as the most common varieties of nickel manganese cobalt oxide (NMC) and nickel cobalt aluminum oxide (NCA). Accurate trends in heat release with varying state of charge are predicted for all of these cathode materials. These results suggest that thermodynamic calculations utilizing a recently published database of properties are broadly applicable for predicting decomposition behavior of layered metal oxide cathodes. Aspects of literature calorimetry measurements relevant to thermal runaway modeling are identified and classified as thermodynamic or kinetic effects. The calorimetry measurements reviewed in this work will be useful for development of a new generation of thermal runaway models targeting applications where accurate maximum cell temperatures are required to predict cascading cell-to-cell propagation rates.

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Section: Comparisons To Published Calorimetry Datasupporting

confidence: 59%

Section: Comparisons To Published Calorimetry Datamentioning

confidence: 76%

Section: Comparisons To Published Calorimetry Datamentioning

confidence: 99%

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A Thermodynamic Reassessment of Lithium-Ion Battery Cathode Calorimetry

Shurtz

2020

J. Electrochem. Soc.

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“…Thermal behaviour of oleic acid, soy lecithin, and DOPEPEG2000 were analysed using DSC Q20 Difference Scanning Calorimetry (TA Instruments, USA) in the Department of Chemistry, University of Malaya. About 5 mg of the sample (Duh et al 2016;Menon et al 2015) was weighed carefully into the 40 µL Tzero aluminium pans, covered with the Tzero Hermetic Lid, and sealed carefully using a Tzero sample press. An empty 40 µL Tzero pans covered with Tzero Hermetic Lids and sealed in the same manner was used as reference pan.…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 99%

Pegylated Oleic Acid-Lecithin Liposomes (Poll) for Anticancer Drug Delivery

Suk¹,

Chung²,

Misran³

2020

JSM

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Cancer is a major health issue, conferring to more than 14.5 million deaths worldwide. Liposomes, self-assembly amphiphilic bilayer molecules, served as excellent alternative vehicles due to their ability to encapsulate both hydrophobic and hydrophilic anticancer drugs. Conventional liposomes, comprised mainly phospholipids are costineffective, unstable, and easily degraded by the external environment. In this study, we introduced PEGylated oleic acid-lecithin liposomes constructed by using C-18 monounsaturated fatty acids (oleic acid) and soy lecithin, in the presence of DOPEPEG2000 in pH7.4, above their glass transition temperature, T g , by employing the simple thin layer lipid hydration method. FTIR spectrum of oleic acid, soy lecithin, and DOPEPEG2000 was studied. The average particle size without further mechanical interference was 1102.3 nm while the zeta potential value was -18 mV, which is compatible with the zeta potential of the red blood cell. The polydispersity index (PDI) was reduced by 46.2% with the incorporation of the DOPEPEG2000. The morphological study using OPM showed the presence of spherical shape liposomes that exhibit the birefringence effect under the light field and Maltese cross under the dark field. Encapsulation of folinic acid, methotrexate, doxorubicin, or irinotecan resulted in greater than 75% encapsulation efficiency (EE). Half-maximal inhibitory concentration, IC 50 , was significantly reduced in POLL as compared to free anticancer drugs. Our data demonstrate POLL may be a promising alternative vehicle to deliver various anticancer drugs to targeted tumour sites. ABSTRAKBarah merupakan isu kesihatan utama yang menyebabkan lebih 14.5 juta kematian di seluruh dunia. Liposom, iaitu molekul swabentuk dwilapis merupakan penghantar alternatif terbaik berikutan kebolehannya untuk mengkapsulkan ubatan anti barah hidrofobik dan hidrofilik. Liposom yang lazimnya diperbuat daripada fosfolipid adalah tidak efektif daripada segi kos, tidak stabil dan mudah terurai oleh persekitaran luar. Dalam kajian ini, kami memperkenalkan liposom asid olik-lesitin berPEG yang terdiri daripada asid lemak tak tepu C-18 (asid olik) dan lesitin soya, dengan kehadiran DOPEPEG2000 dalam pH7.4, pada suhu lebih tinggi daripada suhu peralihan gelas T g , menggunakan metod hidrasi lapisan nipis lipid. Spektrum FTIR asid olik, lesitin soya, dan DOPEPEG2000 juga turut dikaji. Purata saiz partikel adalah 1102.3 nm manakala keupayaan zeta adalah -18 mV, sesuai dengan keupayaan zeta sel darah merah. Indeks polisebaran telah berkurang sebanyak 46.2% dengan penambahan DOPEPEG2000. Kajian morfologi menggunakan Mikroskop Optikal Pengutuban menunjukkan kewujudan liposom berbentuk sfera yang menghasilkan kesan dwibiasan pada medan cerah dan silang Maltese pada medan gelap. Pengkapsulan asid folinik, metotreksat, doksorubisin atau irinotecan menghasilkan lebih 75% kecekapan pengkapsulan. Kepekatan separa rencatan, IC 50 , telah berkurang dengan signifikan pada POLL berbanding ubatan anti barah. Data menunjukkan POLL mungkin ...

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“…Several investigations have been conducted on the energetics of failure of individual LIB cells and cell components. These investigations have employed techniques such as differential scanning calorimetry (DSC) ( 6 , 7 ), accelerating rate calorimetry (ARC) ( 8 , 9 ), and modified bomb calorimetry ( 10 ). Although helpful for characterizing failure energetics, these techniques have limitations as they relate to LIB research.…”

mentioning

confidence: 99%

Impact of State of Charge and Cell Arrangement on Thermal Runaway Propagation in Lithium Ion Battery Cell Arrays

Lee

Said

Stoliarov

2019

Transportation Research Record: Journal of the Transportation R

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Lithium ion batteries are increasingly used in electrical energy storage systems despite their thermal and chemical hazards on failure. These hazards are magnified when multiple cells are combined together in a pack because of the risk of cascading failure. An experimental setup was utilized to investigate the dynamics, gaseous emissions, and energetics associated with thermal failure of cylindrical 18650 form factor, 2600 mAh, lithium cobalt oxide cathode cell arrays in an inert atmosphere. Cell state of charge (SOC) and arrangement were altered to investigate mitigation strategies and provide recommendations for safer battery pack design, transportation, and storage. Complete failure propagation was not prevented in any test, but decreasing to 50% SOC did result in propagation speeds 8.5 times slower than at 100% SOC. Introducing a 5 mm gap between cell rows also slowed propagation somewhat, but to a lesser degree than lowering SOC. Maximum temperatures, hazardous gas yields, and chemical heat generation were all reduced for cells at 50% SOC compared with 100% SOC, but introducing 5 mm gaps had little impact on these quantities. Limiting cells to 50% SOC was by far the most effective mitigation strategy tested, but no strategy was able to eliminate the failure propagation risk. Installing battery packs in inert environments, limiting SOC, and instituting gaps between certain cells can all be effective strategies to lessen the severity of cascading failure, but none of these strategies are individually sufficient for safe transportation and storage of battery packs.

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Characterization on the exothermic behaviors of cathode materials reacted with ethylene carbonate in lithium-ion battery studied by differential scanning calorimeter (DSC)

Cited by 17 publications

References 29 publications

A Thermodynamic Reassessment of Lithium-Ion Battery Cathode Calorimetry

A Thermodynamic Reassessment of Lithium-Ion Battery Cathode Calorimetry

Pegylated Oleic Acid-Lecithin Liposomes (Poll) for Anticancer Drug Delivery

Impact of State of Charge and Cell Arrangement on Thermal Runaway Propagation in Lithium Ion Battery Cell Arrays

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