What changes will occur to the performance of the electrolyte in lithium-ion batteries at low temperatures?
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Wen/DazhuangEditor/DazhuangstayLow temperature environmentThe electrode reaction rate of lithium-ion batteries decreases, leading to a decrease in battery capacity. This is caused by factors such as the decrease in ion conductivity of electrolytes at low temperatures and the decrease in reactivity of electrode surface active substances
Wen/Dazhuang
Editor/Dazhuang
stayLow temperature environmentThe electrode reaction rate of lithium-ion batteries decreases, leading to a decrease in battery capacity. This is caused by factors such as the decrease in ion conductivity of electrolytes at low temperatures and the decrease in reactivity of electrode surface active substances.
Reduced diffusion rate of lithium ions: under low temperature conditions, the electrolyteIncreased viscosityIon diffusionSlow down the speedstay
Reduced activitystaystayReduced activityThis limits the storage and release capacity of active substances in batteries.
/Low temperature environmentSlow down the speedLithium metal dendritestayLithium metal dendrite
Low temperature environmentconductivityIncreased viscosityLow temperature environmentstaySlow down the speedReduced the conductivity of the electrolyte.
staystay
stayReduced the conductivity of the electrolyte.
stayLow temperature environmentmobilityIn order to reduce the electrolyte'sconductivity
stayLithium metal dendritestayconductivitystayUneven deposition
Slow down the speedstayLow temperature environmentSlow down the speedstayDendrite
stayLithium metal dendrite
add tosaltLithium metal dendriteadd tosaltstayLithium metal dendrite
Lithium metal dendriteSerious safety issues such as combustion and explosion
Lithium metal dendritestayLithium ion depletion
Lithium metal dendriteLithium metal dendriteTemperature rise
Lithium metal dendritestayDendrite
add toLithium metal dendriteadd tostayLow temperature environmentadd toDendriteDendriteadd to
add toLithium metal dendriteadd toadd toLiFLiBOBLi2SO4add toDendrite
Forming stableSolid electrolyte interfaceSEIadd tostayForming stableSolid electrolyte interfaceDendrite
add toDendrite
add toLithium metal dendriteadd toadd toPEOPANPAAadd to
add tostayDendriteDendrite
add toLithium metal dendrite
add toadd toLithium metal dendriteadd toadd toadd toadd to
add toadd toadd toSolid electrolyte interfaceadd toadd toLithium metal dendrite
add toadd toadd tostayLithium metal dendriteDendrite
conductivityOptimize the formula of the electrolytesalt
staymobilitysaltLiPF6LiFSIconductivity
conductivitystayLow temperature environmentmobilityDMEDEEconductivity
saltsaltconductivitysaltLiPF6LiBF4LiTFSIsaltconductivity
stayOptimize electrolyte formulaadd toadd toadd toconductivityadd toadd toadd toadd toadd toconductivity
saltconductivitysaltIncreased viscosityconductivity
Low temperature environmentmobilitystay
add toDendriteadd toLithium metal dendriteOptimize electrolyte formulaCan significantly improve the performance of the electrolyteconductivitystay
stayLow temperature environmentstaystay
Lithium metal dendriteadd toDendriteDendriteadd to
stayElectrode interface and solid electrolyte interfacestay
Optimize electrolyte formulastaySolid electrolyte with high ionic conductivity and good low-temperature stabilitystay
stayLow temperature environment
conclusion
stayLow temperature environmentconductivityLithium metal dendriteadd toDendriteadd toOptimize electrolyte formulaconductivity
add tostayLow temperature environment
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