Thermal-triggered fire-extinguishing separators by phase change materials for high-safety lithium-ion batteries

Liu, Zhifang; Peng, Yitong; Tao, Meng; Yu, Le; Wang, Sen; Hu, Xianluo

doi:10.1016/j.ensm.2022.02.020

Cited by 50 publications

(24 citation statements)

References 54 publications

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“…The endothermic effect of PCMs for preventing thermal runaway is discussed in detail in the section ''Phase-change polymers.'' Recently, Hu et al 130 encapsulated a PCM (stearic acid) alongside flame-retardant TEP as a core material in hollow SiO 2 microspheres to combine the endothermic properties of PCMs with the self-extinguishing properties of TEP, thus maximizing the thermal runaway management effect. Before the solid-liquid phase transition of the PCM, the flameretardant TEP was locked in the solid PCM.…”

Section: Microcapsules or Nanofibers With Encapsulated Flame Retardantsmentioning

confidence: 99%

Thermally responsive polymers for overcoming thermal runaway in high-safety electrochemical storage devices

Chen

Liu

Feng

et al. 2023

Mater. Chem. Front.

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Section: Microcapsules or Nanofibers With Encapsulated Flame Retardantsmentioning

confidence: 99%

Thermally responsive polymers for overcoming thermal runaway in high-safety electrochemical storage devices

Chen

Liu

Feng

et al. 2023

Mater. Chem. Front.

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“…Over 180 °C, short circuit occurs and the battery eventually explode if the separators shrink or melt during this process. [ 20–22 ]…”

Section: Introductionmentioning

confidence: 99%

“…Over 180 °C, short circuit occurs and the battery eventually explode if the separators shrink or melt during this process. [20][21][22] Thermal runaway is a function of various undesirable phenomena inside the battery including internal pressure, gas, and heat to a certain amount. Therefore, real-time detection of pressure, heat, and gas changes is the fundamental to prevent the development of TR.…”

mentioning

confidence: 99%

Intelligent Monitoring for Safety‐Enhanced Lithium‐Ion/Sodium‐Ion Batteries

Guo

et al. 2023

Advanced Energy Materials

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Lithium‐ion/sodium‐ion batteries are the most advanced energy storage devices, but the structural evolution of electrode materials, electrolyte decomposition, the growth of Li/Na dendrites and the generation of heat and gas inside batteries represent serious safety issues. Therefore, it is necessary to real time monitor the parameter changes inside these devices. Herein, the recent important progress in a variety of advanced intelligent detection techniques based on the detection of heat, gas, and strain is introduced and discussed. The perfect combination of electrochemical parameters and these advanced intelligent sensing techniques allows the monitoring of the dynamic chemical and thermal evolution during a cell's operation without any impact, which is crucial to making meaningful advancements in energy storage devices. This work provide access to advanced diagnostic tools to guide the rational design of high‐safety batteries.

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“…Encapsulating PCMs inside three-dimensional networks of porous materials, such as expanded graphite, − carbon foam, − mesoporous silica, − aerogel, − and metal–organic framework, , has been demonstrated to be an accessible and attractive strategy to fabricate form-stable PCM composites. Among various porous materials, natural wood is considered the most promising candidate for a supporting material for PCM encapsulation due to its favorable characteristics, such as a distinctive anisotropic porous structure, admirable mechanical strength, excellent renewability and recyclability, and low cost .…”

Section: Introductionmentioning

confidence: 99%

“…The delignified wood can well support solid–liquid PCMs and avoid their liquid leakage during phase transition because of the high surface tension and strong capillary effect . Nevertheless, the chemical constitutions of both organic PCMs and natural wood are highly flammable, thereby severely restricting their large-scale application in building construction. ,, It was reported that the combustion of smoke and gas caused most of the deaths during building fires . Therefore, it is urgently necessary to enhance the flame retardancy of the wood-based form-stable PCM composites.…”

Section: Introductionmentioning

confidence: 99%

Flame-Retardant and Form-Stable Delignified Wood-Based Phase Change Composites with Superior Energy Storage Density and Reversible Thermochromic Properties for Visual Thermoregulation

Wang

Yue

et al. 2023

ACS Sustainable Chem. Eng.

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The development of form-stable phase change materials (PCMs) with flame retardancy and the visual thermal storage process is crucial for their application in building energy conservation. Herein, an active phosphorus/ammonium-containing non-formaldehyde flame retardant (APA) was synthesized based on the natural compound phytic acid. Then, wood-based form-stable PCM composites (PTPCMs) with high energy storage density, excellent flame retardancy, and real-time and visual reversible thermochromic properties were successfully fabricated by impregnating the thermochromic compound into the APA-grafted delignified wood. The delignified wood well supports the solid–liquid PCMs and avoids their liquid leakage during phase transition due to the high surface tension and strong capillary effect. The differential scanning calorimetry (DSC) results showed that the PTPCMs possessed high thermal energy storage density (165.3–198.6 J/g) and reliable thermal stability. With the concentration of the flame-retardant APA increased, the peak heat release rate (pHRR) and total heat release (THR) of PTPCMs reduced noticeably, demonstrating the enhanced flame retardancy of PTPCMs. Moreover, PTPCM composites had good thermoregulation properties and the visualization of the phase transition process was made possible by the reversible thermochromic properties. In summary, the novel PTPCMs show tremendous application potential for efficient building energy conservation.

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Thermal-triggered fire-extinguishing separators by phase change materials for high-safety lithium-ion batteries

Cited by 50 publications

References 54 publications

Thermally responsive polymers for overcoming thermal runaway in high-safety electrochemical storage devices

Thermally responsive polymers for overcoming thermal runaway in high-safety electrochemical storage devices

Intelligent Monitoring for Safety‐Enhanced Lithium‐Ion/Sodium‐Ion Batteries

Flame-Retardant and Form-Stable Delignified Wood-Based Phase Change Composites with Superior Energy Storage Density and Reversible Thermochromic Properties for Visual Thermoregulation

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