<i>In situ</i> formed polymer gel electrolytes for lithium batteries with inherent thermal shutdown safety features

Zhou, Hongyao; Liu, Haodong; Li, Yejing; Yue, Xiujun; Wang, Xuefeng; Gonzalez, Matthew; Meng, Ying Shirley

doi:10.1039/c9ta02341k

Cited by 59 publications

(45 citation statements)

References 49 publications

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“…The initiator-free polymerization approach of VC to poly-VC in the presence of LiI is used as a tool for triggering the thermal shutdown of the LMPB cell by sensing any potential failure due to the thermal runaway (Figure 35a). 489 This work can be considered as an example of the in situ process for injecting smartness into the battery, where the separator assisted approach is employed. Here, LiI plays multiple roles as a catalyst for the ring-opening polymerization of VC and a Li + -ion source in the resulting GPE.…”

Section: Anionic Polymerizationmentioning

confidence: 99%

In situpolymerization process: an essential design tool for lithium polymer batteries

Vijayakumar

Anothumakkool

Kurungot

et al. 2021

Energy Environ. Sci.

218

121

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Section: Anionic Polymerizationmentioning

confidence: 99%

In situpolymerization process: an essential design tool for lithium polymer batteries

Vijayakumar

Anothumakkool

Kurungot

et al. 2021

Energy Environ. Sci.

218

121

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“…This has been demonstrated using lithium iodide and poly(vinylene carbonate), where the cell are automatically shut down (electrolyte crosslinked) at 80 °C, resulting in a few orders of magnitude of increase in cell impedance. [ 119 ] While this temperature is rather low, conceptually, a gel electrolyte could be synthesized with cross‐linking temperature tuned higher.…”

Section: Strategies For High Temperature Electrolyte Designmentioning

confidence: 99%

Electrolyte Design for Lithium Metal Anode‐Based Batteries Toward Extreme Temperature Application

et al. 2021

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Lithium anode-based batteries (LBs) are highly demanded in society owing to the high theoretical capacity and low reduction potential of metallic lithium. They are expected to see increasing deployment in performance critical areas including electric vehicles, grid storage, space, and sea vehicle operations. Unfortunately, competitive performance cannot be achieved when LBs operating under extreme temperature conditions where the lithium-ion chemistry fail to perform optimally. In this review, a brief overview of the challenges in developing LBs for low temperature (<0°C) and high temperature (>60°C) operation are provided followed by electrolyte design strategies involving Li salt modification, solvation structure optimization, additive introduction, and solid-state electrolyte utilization for LBs are introduced. Specifically, the prospects of using lithium metal batteries (LMBs), lithium sulfur (Li-S) batteries, and lithium oxygen (Li-O 2 ) batteries for performance under low and high temperature applications are evaluated. These three chemistries are presented as prototypical examples of how the conventional low temperature charge transfer resistances and high temperature side reactions can be overcome. This review also points out the research direction of extreme temperature electrolyte design toward practical applications.

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“…Hence, it is not easy to cause the TR. Therefore, for the lithium metal battery, it is essential to develop a dendrite‐free anode and separator 87‐92 …”

Section: Inducements Of Iscmentioning

confidence: 99%

A review of the internal short circuit mechanism in lithium‐ion batteries: Inducement, detection and prevention

Huang

Liu

et al. 2021

Int J Energy Res

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Summary Internal short circuit (ISC) of lithium‐ion battery is one of the most common reasons for thermal runaway, commonly caused by mechanical abuse, electrical abuse and thermal abuse. This study comprehensively summarizes the inducement, detection and prevention of the ISC. Firstly, the fault tree is utilized to analyze the ISC inducement, including the abuse conditions, improper manufacture and design defects. Secondly, the ISC substitute triggering methods (utilizing mechanical deformation from the outside or utilizing controllable components introduced inside) are summarized considering the randomness of ISC, which have high repeatability. Moreover, these methods can be used to investigate the evolution and the hazard boundary of ISC. The ISC severity is determined by the ISC type, ISC location, ISC area, battery state of charge, capacity, material and structure. There are four types of ISC mode, the danger extends ranking is aluminum‐anode > aluminum‐copper > cathode‐copper > cathode‐anode. The ISC evolution is presented based on the upper summary. Then, the ISC detection methods are reviewed: (1) comparing the measured data with the predicted value from the model; (2) detecting whether the battery has self‐discharge; (3) comparing based on the battery inconsistency and (4) other signals. Finally, the prevention strategies are summarized, which can be used to reduce the ISC risk by blocking electron or lithium‐ion channels in the battery cell.

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In situ formed polymer gel electrolytes for lithium batteries with inherent thermal shutdown safety features

Abstract: An in situ formed poly(vinylene carbonate)–lithium iodide gel electrolyte enables stable cycling of lithium metal and a thermal shutdown function.

Cited by 59 publications

References 49 publications

In situpolymerization process: an essential design tool for lithium polymer batteries

In situpolymerization process: an essential design tool for lithium polymer batteries

Electrolyte Design for Lithium Metal Anode‐Based Batteries Toward Extreme Temperature Application

A review of the internal short circuit mechanism in lithium‐ion batteries: Inducement, detection and prevention

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