High safety separators for rechargeable lithium batteries

Su, Miaomiao; Huang, Guang Sheng; Wang, Haihui; Wang, Yanjie

doi:10.1007/s11426-021-1011-9

Cited by 48 publications

(17 citation statements)

References 187 publications

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“…Thus, substituting high melting-point polymers for traditional binders, such as PI and polydopamine (PDA), is an effective strategy to improve the thermal stability of separators. 185…”

Section: Implementation Of High-temperature Batteriesmentioning

confidence: 99%

“…Thus, substituting high melting-point polymers for traditional binders, such as PI and polydopamine (PDA), is an effective strategy to improve the thermal stability of separators. 185 Moreover, separators with a high heat resistant skeleton have also been designed based on high melting-point polymers. 186 For example, a flexible SiC fibre network skeleton-supported aluminium oxide separator with improved flexibility and thermal stability was reported.…”

Section: Energy and Environmental Science Reviewmentioning

confidence: 99%

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Challenges and advances in wide-temperature rechargeable lithium batteries

Zhang

Yang

Zhou

et al. 2022

Energy Environ. Sci.

236

153

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“…Thus, substituting high melting-point polymers for traditional binders, such as PI and polydopamine (PDA), is an effective strategy to improve the thermal stability of separators. 185…”

Section: Implementation Of High-temperature Batteriesmentioning

confidence: 99%

Section: Energy and Environmental Science Reviewmentioning

confidence: 99%

Challenges and advances in wide-temperature rechargeable lithium batteries

Zhang

Yang

Zhou

et al. 2022

Energy Environ. Sci.

236

153

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“…Since the above characterization results indicate that the PNCS/NG with high electrical conductivity facilitates the polysulfide conversion kinetics when being used as the S host. Also, many previously studies show that the separator interfacial engineering is one of the effective strategies to solve the shuttle of polysulfides. , To obtain enhanced suppression effect toward the polysulfide shuttle, Li–S coin cells using PNCS/NG as both the S host and the construction component for the interlayer were assembled, and the cells are denoted as PNCS/NG-CI. For comparison, the Li–S cells with PNCS or NG as both S host and interlayer material were assembled, which are named as PNCS-CI and NG-CI, respectively.…”

Section: Resultsmentioning

confidence: 99%

Solid Carbon Spheres with Interconnected Open Pore Channels Enabling High-Efficient Polysulfide Conversion for High-Rate Lithium–Sulfur Batteries

Song

Liu

Luo

et al. 2022

ACS Appl. Mater. Interfaces

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Hollow carbon spheres or core–sheath porous carbon spheres have been widely used in the S cathode of lithium–sulfur batteries. However, the sphere shells or the pore walls may block the free transport of active species to a certain extent and may have a negative influence on the effective accommodation of elemental sulfur. Herein, solid but porous carbon spheres (PNCS) with large porosity and high specific surface area are developed, which enable high sulfur loading and ample cathode/electrolyte contact area, and the interconnected open pore channels significantly shorten the ion/electron transport pathways. Together with high-conducting nitrogen-doped graphene (NG), facilitated polysulfide conversion kinetics is realized in the as-assembled Li–S batteries, which deliver a high initial discharge capacity of 1445 mAh g–1 at 0.2 C, excellent rate capability of 872 mAh g–1 at 4 C, and low capacity decay of 0.047% per cycle for 500 cycles at 1 C. Even under high sulfur loading of 5.5 mg cm–2 and low electrolyte/sulfur (E/S) ratio of 5 μL mg–1, the Li–S batteries still display high specific capacities of 896 mAh g–1 and 4.96 mAh cm–2. The real application of PNCS/NG is also demonstrated by the corresponding Li–S pouch cells showing high discharging capacity and stable open circuit voltage. This work exhibits the promising application of the solid carbon spheres as the S host for effectively addressing the polysulfide shuttle and propelling the development of high-performance Li–S batteries.

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“…wileyonlinelibrary.com/journal/nano 947 of the adjacent battery, and finally causing the fire and explosion accidents of the whole battery system. [9][10][11] One of the safety problems of LiBs is that the separator will shrink or melt at high temperature, leading to the internal short circuit of LiBs, which will release a lot of heat instantaneously, resulted in LiBs fire or explosion. [12][13][14] The common strategy is to modify the surface of the separator with inorganic particles, such as ceramics [15,16] and titanium oxide, [17,18] which are highly thermal stabile in order to improve the thermal resistance of the separator.…”

Section: Introductionmentioning

confidence: 99%

“…[ 5–8 ] The factors of thermal runaway of LiBs can be divided into two categories: internal factors and external factors, the squeeze and overcharge of the LiBs in the battery module will lead to the short circuit of LiBs and a large amount of heat will be generated inside, resulting in the decomposition of the electrolyte and the positive electrode, and then LiBs will explode, causing the rapid rise of the surface temperature of the adjacent battery, and finally causing the fire and explosion accidents of the whole battery system. [ 9–11 ]…”

Section: Introductionmentioning

confidence: 99%

Fabrication of fire‐response functional separators with microcapsule fire extinguishing agent for lithium‐ion battery safety

Lou¹,

Zhang

Han

et al. 2021

Nano Select

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Fire safety issues hinder the large‐scale application of lithium‐ion batteries (LiBs). Here, a new type of fire‐response separators is prepared by loading the microcapsule fire extinguishing agent on the surface of the separator. The shell of the microcapsule will break automatically at a certain temperature and release the fire extinguishing agent when thermal runaway of LiBs occurs, which can quickly absorb heat through endothermic reaction and ensure LiBs will not burn or explode. The porosity of fire‐response separator is 53.6%, the electrolyte uptake is 132% and the ionic conductivity is 1.00 mS cm‐1. The initial specific capacity is 2643 mAh g‐1 at 4°C and the capacity retention rate is 93% after 200 cycles for NCM523 battery based fire‐response separator. The temperature of LiBs based on the fire‐response separator can automatically drop to room temperature in 20 seconds, which ensures the safety of other adjacent LiBs. This work proposes a new active protection concept to solve the safety problem of LiBs.

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High safety separators for rechargeable lithium batteries

Cited by 48 publications

References 187 publications

Challenges and advances in wide-temperature rechargeable lithium batteries

Challenges and advances in wide-temperature rechargeable lithium batteries

Solid Carbon Spheres with Interconnected Open Pore Channels Enabling High-Efficient Polysulfide Conversion for High-Rate Lithium–Sulfur Batteries

Fabrication of fire‐response functional separators with microcapsule fire extinguishing agent for lithium‐ion battery safety

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