Experimental study on flame stability limits of lithium ion battery electrolyte solvents with organophosphorus compounds addition using a candle-like wick combustion system

Guo, Feng; Ozaki, Yu; Nishimura, Kinya; Hashimoto, Nozomu; Fujita, Osamu

doi:10.1016/j.combustflame.2019.05.019

Cited by 12 publications

(13 citation statements)

References 32 publications

(42 reference statements)

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“…The EHoC is obtained by dividing the total heat released by the total mass loss (Babrauskas and Peacock 1992), also presented in Table 2. The residual mass, predominantly LiPF6, is 0.2 g. The average effective heat of combustion of electrolyte (1.0 M LiPF6 in EC/DEC=50/50 v/v) is measured as 15.6 kJ/g which is in good agreement with the calculated value of 16.6 kJ/g based on the effective heat of combustion of EC and DEC measured by Guo et.al (Guo et al 2019) as 12.15 and 21.06 kJ/g, respectively.…”

Section: Gas Burnersupporting

confidence: 87%

Lithium-Ion Battery Fire Suppression Using Water Mist Systems

Ghiji¹,

Burch²,

Gamble³

et al. 2021

Frontiers in Heat and Mass Transfer

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Lithium-ion batteries (LiBs) have superior energy density and lifetime compared to battery technologies such as lead acid. Despite the widespread application of LiBs in energy storage systems, electronic devices, aerospace and the automotive industry, they present a fire risk. In this study, experiments were conducted to characterize the thermal behavior of the electrolyte (as the main contributor to LiB fires) using a cone calorimeter; investigate the interactions of water mist and a Bunsen burner, as a precursor to examining the effectiveness of a water mist suppression system in extinguishing a LiB fire. In the present work, we have endeavored to systematically study the fire suppression efficacy of water mist by adopting to some novel approaches. This involved carefully planned laboratory scale explorations that involved a propane gas fueled flame, and subsequently by using bespoke set up that mimicked fire owing to fuel surge from typical Li-ion cell (18650 cells). In the latter set of fire suppression tests, water droplets were produced by a fan nozzle and sprayed horizontally toward the jet flame of replica 18560 battery containing only the electrolyte. The results showed that both fire types (Bunsen burner and LiB) are suppressed rapidly on activation of the water mist fire suppression system for geometries that enable the water mist direct access to the lift-off zone, between the gas source and base of the flame.

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Section: Gas Burnersupporting

confidence: 87%

Lithium-Ion Battery Fire Suppression Using Water Mist Systems

Ghiji¹,

Burch²,

Gamble³

et al. 2021

Frontiers in Heat and Mass Transfer

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“…39 The use of flame-retarding chemicals can improve the fire properties of electrolytes by reducing the flammability of the electrolytes. [40][41][42][43][44] Organophosphorus compounds 45,46 , fluorinated ethers 47 or esters 48 , fluorinated sulfones 49 , and ionic liquids 50,51 have all been studied to improve fire properties of electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Physical and electrochemical properties of new structurally flexible imidazolium phosphate ionic liquids

Bhowmick

Filippov

Khan

et al. 2022

Phys. Chem. Chem. Phys.

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“…The combustion experiments on electrolytes were carried out by the means of the wick-LOC method which was modified from LOI method in our previous work [31,32]. The limiting oxygen concentration (LOC) to sustain the flame can be determined by precise adjustment of oxygen.…”

Section: Methodsmentioning

confidence: 99%

“…The experimental procedure of wick-LOC method followed the LOI method (ISO4589-2) in principle. Due to the unique fueling system and wick flame configuration, following detailed procedures were specified as developed in the previous work [31,32].…”

Section: Methodsmentioning

confidence: 99%

“…In this paper, a wick combustion apparatus in conjunction with limiting oxygen concentration (LOC) method was utilized to investigate the combustion characteristics and flammability of electrolytes, called wick-LOC method [31,32]. Three typical lithium salts, LiPF 6 , LiBF 4 and LiTFSI, were dissolved in dimethyl carbonate (DMC) solvent as 1 mole per liter (1M) addition to compare the influence of salts on combustion characteristics of DMC based electrolytes.…”

Section: Introductionmentioning

confidence: 99%

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