Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries
Abstract Lithium-ion batteries are widely used as a power source for portable equipment. However, the use of highly flammable organic solvents in the liquid electrolyte component in these batteries presents a serious safety concern. In this study, the thermal stability of battery cathodes comprising...
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Nature Portfolio
2018
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oai:doaj.org-article:814657357c484e6bb6de35afaf5495cb2021-12-02T11:41:02ZThermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries10.1038/s41598-018-34017-22045-2322https://doaj.org/article/814657357c484e6bb6de35afaf5495cb2018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-34017-2https://doaj.org/toc/2045-2322Abstract Lithium-ion batteries are widely used as a power source for portable equipment. However, the use of highly flammable organic solvents in the liquid electrolyte component in these batteries presents a serious safety concern. In this study, the thermal stability of battery cathodes comprising LiNi1/3Mn1/3Co1/3O2 (NMC) and LiPF6-based electrolyte solutions have been investigated using transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) methods. Ex situ TEM measurements revealed that significant structural change occurred in the charged NMC composite after heating at a temperature above the exothermal peaks. It was found that LiF nanocrystallites precipitated in LiPF6 and that a number of nanoscale stacking faults developed in the $$R\bar{3}m$$ R3¯m layered structure of NMC. The results suggested that the decomposition reaction of LiPF6 and the structural change of NMC were directly associated with the exothermic reaction in the liquid electrolyte-based NMC electrode composite.Hirofumi TsukasakiWataru FukudaHideyuki MorimotoToshihiro AraiShigeo MoriAkitoshi HayashiMasahiro TatsumisagoNature PortfolioarticleStacking FaultExothermic ReactionExothermic PeakEthyl Methyl CarbonateLithium Iron Phosphate LiFePOMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018) |
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DOAJ |
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DOAJ |
| language |
EN |
| topic |
Stacking Fault Exothermic Reaction Exothermic Peak Ethyl Methyl Carbonate Lithium Iron Phosphate LiFePO Medicine R Science Q |
| spellingShingle |
Stacking Fault Exothermic Reaction Exothermic Peak Ethyl Methyl Carbonate Lithium Iron Phosphate LiFePO Medicine R Science Q Hirofumi Tsukasaki Wataru Fukuda Hideyuki Morimoto Toshihiro Arai Shigeo Mori Akitoshi Hayashi Masahiro Tatsumisago Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries |
| description |
Abstract Lithium-ion batteries are widely used as a power source for portable equipment. However, the use of highly flammable organic solvents in the liquid electrolyte component in these batteries presents a serious safety concern. In this study, the thermal stability of battery cathodes comprising LiNi1/3Mn1/3Co1/3O2 (NMC) and LiPF6-based electrolyte solutions have been investigated using transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) methods. Ex situ TEM measurements revealed that significant structural change occurred in the charged NMC composite after heating at a temperature above the exothermal peaks. It was found that LiF nanocrystallites precipitated in LiPF6 and that a number of nanoscale stacking faults developed in the $$R\bar{3}m$$ R3¯m layered structure of NMC. The results suggested that the decomposition reaction of LiPF6 and the structural change of NMC were directly associated with the exothermic reaction in the liquid electrolyte-based NMC electrode composite. |
| format |
article |
| author |
Hirofumi Tsukasaki Wataru Fukuda Hideyuki Morimoto Toshihiro Arai Shigeo Mori Akitoshi Hayashi Masahiro Tatsumisago |
| author_facet |
Hirofumi Tsukasaki Wataru Fukuda Hideyuki Morimoto Toshihiro Arai Shigeo Mori Akitoshi Hayashi Masahiro Tatsumisago |
| author_sort |
Hirofumi Tsukasaki |
| title |
Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries |
| title_short |
Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries |
| title_full |
Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries |
| title_fullStr |
Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries |
| title_full_unstemmed |
Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries |
| title_sort |
thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries |
| publisher |
Nature Portfolio |
| publishDate |
2018 |
| url |
https://doaj.org/article/814657357c484e6bb6de35afaf5495cb |
| work_keys_str_mv |
AT hirofumitsukasaki thermalbehaviorandmicrostructuresofcathodesforliquidelectrolytebasedlithiumbatteries AT watarufukuda thermalbehaviorandmicrostructuresofcathodesforliquidelectrolytebasedlithiumbatteries AT hideyukimorimoto thermalbehaviorandmicrostructuresofcathodesforliquidelectrolytebasedlithiumbatteries AT toshihiroarai thermalbehaviorandmicrostructuresofcathodesforliquidelectrolytebasedlithiumbatteries AT shigeomori thermalbehaviorandmicrostructuresofcathodesforliquidelectrolytebasedlithiumbatteries AT akitoshihayashi thermalbehaviorandmicrostructuresofcathodesforliquidelectrolytebasedlithiumbatteries AT masahirotatsumisago thermalbehaviorandmicrostructuresofcathodesforliquidelectrolytebasedlithiumbatteries |
| _version_ |
1718395469616381952 |