A review of safety-focused mechanical modeling of commercial lithium-ion batteries

Zhu, Juner; Wierzbicki, Tomasz; Li, Wei

doi:10.1016/j.jpowsour.2017.12.034

Cited by 338 publications

(150 citation statements)

References 121 publications

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“…[5,6] In fact, the electrolyte salt used in commercial LIBs, lithium hexafluorophosphate (LiPF 6 ), demonstrates thermal decomposition at above 60 °C and reaction with water (even when the content of H 2 O is only above 10 ppm). This is due to the transference number of PF 6 − being higher than that of Li + , which ultimately limits power delivery and favor lithium metal dendritic growth, this latter leading to severe safety issues. Although a few other lithium salts (e.g., lithium tetrafluoroborate (LiBF 4 ), [8] lithium bis(oxalato)borate (LiBOB), [9] and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) [10,11] ) have been widely investigated, none of them has been demonstrated as a viable replacement to LiPF 6 , yet.…”

Section: Introductionmentioning

confidence: 99%

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

Qin

Zhang

et al. 2019

Advanced Energy Materials

121

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Herein, a novel electrospun single‐ion conducting polymer electrolyte (SIPE) composed of nanoscale mixed poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) and lithium poly(4,4′‐diaminodiphenylsulfone, bis(4‐carbonyl benzene sulfonyl)imide) (LiPSI) is reported, which simultaneously overcomes the drawbacks of the polyolefin‐based separator (low porosity and poor electrolyte wettability and thermal dimensional stability) and the LiPF6 salt (poor thermal stability and moisture sensitivity). The electrospun nanofiber membrane (es‐PVPSI) has high porosity and appropriate mechanical strength. The fully aromatic polyamide backbone enables high thermal dimensional stability of es‐PVPSI membrane even at 300 °C, while the high polarity and high porosity ensures fast electrolyte wetting. Impregnation of the membrane with the ethylene carbonate (EC)/dimethyl carbonate (DMC) (v:v = 1:1) solvent mixture yields a SIPE offering wide electrochemical stability, good ionic conductivity, and high lithium‐ion transference number. Based on the above‐mentioned merits, Li/LiFePO4 cells using such a SIPE exhibit excellent rate capacity and outstanding electrochemical stability for 1000 cycles at least, indicating that such an electrolyte can replace the conventional liquid electrolyte–polyolefin combination in lithium ion batteries (LIBs). In addition, the long‐term stripping–plating cycling test coupled with scanning electron microscope (SEM) images of lithium foil clearly confirms that the es‐PVPSI membrane is capable of suppressing lithium dendrite growth, which is fundamental for its use in high‐energy Li metal batteries.

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Section: Introductionmentioning

confidence: 99%

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

Qin

Zhang

et al. 2019

Advanced Energy Materials

121

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“…These electrolytes also tend to react with active materials causing capacity loss [1,8,9] and have a transference number between 0.2 and 0.5. [14][15][16] To address these issues, solid-state electrolytes (SSEs) such as ion-conducting inorganic ceramics, [17,18] organic polymers, [4,19] and ceramic-composites [5,20,21] have been investigated as alternatives to liquid electrolytes. [14][15][16] To address these issues, solid-state electrolytes (SSEs) such as ion-conducting inorganic ceramics, [17,18] organic polymers, [4,19] and ceramic-composites [5,20,21] have been investigated as alternatives to liquid electrolytes.…”

Section: Introductionmentioning

confidence: 99%

A Ceramic‐PVDF Composite Membrane with Modified Interfaces as an Ion‐Conducting Electrolyte for Solid‐State Lithium‐Ion Batteries Operating at Room Temperature

Kwok

et al. 2018

ChemElectroChem

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Solid-state batteries hold great promise because of their safety and high projected energy density. However, the sizeable interfacial resistance between the electrodes and the electrolyte of such batteries is a significant bottleneck in the development of this technology. In this work, we develop a Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) and polyvinylidene fluoride (PVDF) solid-state composite membrane characterized by high conductivity, tensile strength, and flexibility as well as low impedance if interfacially modified by a minute amount of liquid electrolyte. A solid-state lithium-ion battery using this electrolyte with LiFePO 4 and Li as electrodes delivers excellent rate capability and cycling stability at room temperature. In particular, the battery shows an initial discharge capacity of 155 mAh g À1 and, after 100 cycles at 1C, of 145 mAh g À1 . Even at 4C, the discharge capacity is 96 mAh g À1 . Our study suggests that the interfacially modified LLZTO-PVDF membrane is a promising electrolyte for solid-state lithium-ion batteries.

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“…In practical applications, there are three typical abuse conditions that can cause the failure of a LIB, including mechanical damage (crushing, collision, nail penetration, etc. ), thermal abuse (heating), and electrical abuse (overcharge/discharge and short‐circuits) . Usually, these types of abuse behavior occur together.…”

Section: Conventional Solutions For Lib Safety Concernsmentioning

confidence: 99%

Smart Materials and Design toward Safe and Durable Lithium Ion Batteries

et al. 2019

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Smart electrochemical energy storage devices are devices that can operate autonomously to some extent. Although the conventional electrochemical energy storage devices, e.g., the commonly used lithium‐ion batteries (LIBs), may be externally monitored in terms of their voltage and current output to reflect the state of health for the devices, it is extremely important to exploit materials and devices that are intrinsically smart enough to be capable of rapidly self‐detecting and responding to faults, such as interior short circuits, overheating, abnormal capacity drop, and other types of mechanical/chemical damage. These “smart” features could significantly enhance the safety characteristics and durability of LIBs, which is essential for future usage. Therefore, recent achievements toward smart materials and design strategies for safer and more durable LIBs are summarized. The main categories are as follows: 1) New materials: This category mainly includes smart electrode materials with thermal/electrical/mechanical self‐response functions, and self‐response separators to suppress thermal runaway/lithium dendrite growth; 2) New chemistries: This category mainly includes electrolytes with reversible self‐protecting functions; and 3) New architectures with novel functions, such as shape‐recovery, self‐heating, and self‐monitoring. Besides the working mechanisms, the challenges that must be overcome for smart LIBs to be adopted in practical applications are also discussed.

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A review of safety-focused mechanical modeling of commercial lithium-ion batteries

Cited by 338 publications

References 121 publications

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

A Ceramic‐PVDF Composite Membrane with Modified Interfaces as an Ion‐Conducting Electrolyte for Solid‐State Lithium‐Ion Batteries Operating at Room Temperature

Smart Materials and Design toward Safe and Durable Lithium Ion Batteries

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