High-voltage ionic liquid-based flexible solid polymer electrolyte for high-performance Li-ion batteries

Kale, Rushikesh B.; More, Sahebrao S.; Khupse, Nageshwar D.; Kalubarme, Ramchandra S.; Kulkarni, Milind V.; Rane, Sunit B.; Kale, Bharat B.

doi:10.1039/d3se00417a

Cited by 5 publications

(5 citation statements)

References 59 publications

(73 reference statements)

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“…Although the precipitation and crystallization of the secondary phase from the heat generated by the Li-ion battery reaction using SAF2507 were feasible at 700 • C, it required more than 5 h, and the fraction of the secondary phase remained low. Hence, the application of SAF2507 as a case material for Li-ion batteries can enhance battery stability because of the inhibited crystallization and growth of the secondary phase [1,7,38].…”

Section: Discussionmentioning

confidence: 99%

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Crystallization of Secondary Phase on Super-Duplex Stainless Steel SAF2507: Advanced Li-Ion Battery Case Materials

Shin,

Kim,

Yoon

2024

Crystals

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The demand for Li-ion batteries has increased because of their extensive use in vehicles and portable electronic devices. This increasing demand implies greater interaction between batteries and humans, making safety a paramount concern. Although traditional batteries are fabricated using Al, recent efforts to enhance safety have led to the adoption of AISI304. The strength and corrosion resistance of AISI304 are greater than those of Al; however, issues such as stress-induced phase transformation and low high-temperature strength have been observed during processing. Duplex stainless steel SAF2507, which is characterized by a dual-phase structure consisting of austenite and ferrite, exhibits excellent strength and corrosion resistance. Although SAF2507 demonstrated outstanding high-temperature strength up to 700 °C, it precipitated a secondary phase. The precipitation of this secondary phase, believed to be caused by the precipitation of the carbides of Cr and Mo, has been extensively studied. Research on the precipitation of the secondary phase near 1000 °C has been conducted owing to the annealing temperature (1100 °C) of the SAF2507 solution. The secondary phase precipitates at approximately 1000 °C because of slow cooling rates. However, few studies have been conducted on the precipitation of the secondary phase at approximately 700 °C. This study analyzed the precipitation behavior of the secondary phase at 700 °C when SAF2507 was applied and assessed its safety during heat generation in Li-ion batteries. The precipitation behavior was analyzed using field emission scanning electron microscopy for morphology, energy-dispersive X-ray spectroscopy for composition, and X-ray diffraction for phase identification.

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Section: Discussionmentioning

confidence: 99%

“…However, fundamental safety issues at high temperatures remain unresolved. Recently, Li-ion battery casing materials have changed from Al to AISI304 (austenite stainless steel) owing to their higher strength and corrosion resistance [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Crystallization of Secondary Phase on Super-Duplex Stainless Steel SAF2507: Advanced Li-Ion Battery Case Materials

Shin,

Kim,

Yoon

2024

Crystals

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“…Lithium-ion batteries (Li-ion) are rechargeable power sources for electronic devices, having high energy densities, low self-discharge rates, rapid charging abilities, and long cycle lives [1][2][3]. These attributes have made Li-ion batteries the preferred choice for electric vehicles and devices, and demand has increased in recent years [4][5][6]. Considering the integration of Li-ion batteries into daily life, it is crucial to ensure their safety [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Park focused on enhancing cathode material performance by developing TiC 3 [10]. Khan studied the heating of Li-ion battery phase-change material substrates to achieve temperature control [11], and Kale explored flexible solid-state polymers as Li-ion battery electrolytes [6]. These research trends collectively aim to enhance the performance and safety of lithium-ion batteries, thereby enabling their application in diverse fields [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Li-ion batteries consist of a Li electrolyte between the cathode and the anode [1,6,7]. The cathode, which must have a high electrical conductivity, commonly utilises materials of the lithium oxide series, whereas the anode, which serves as the casing, must have high strength and corrosion resistance; thus, stainless steel is frequently used.…”

Section: Introductionmentioning

confidence: 99%

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Study of Electroless Nickel Plating on Super Duplex Stainless Steel for Lithium-Ion Battery Cases: Electrochemical Behaviour and Effects of Plating Time

Shin,

Park,

Kim

et al. 2024

Metals

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With increasing demand for Li-ion batteries, studies are focusing on enhancing battery performance and safety. However, studies on battery cases remain scarce. Herein, we propose the use of super duplex stainless steel SAF2507, which is a two-phase (austenite + ferrite) steel, for battery casings. Unlike conventional AISI304, SAF2507 maintains its corrosion resistance and strength at high temperatures and precipitates a secondary phase at approximately 975 °C. However, the effects of Ni plating on this secondary phase are not well documented. Therefore, the electroless Ni plating of SAF2507 after secondary-phase precipitation was studied. Briefly, heat treatment at 1000 °C was used to induce precipitation, and the electroless Ni plating behaviour over varying plating periods was analysed using open-circuit potential, potentiodynamic polarisation, and electrochemical impedance spectroscopy measurements. The plating state and corrosion behaviour were examined using scanning electron microscopy. Heat-treated SAF2507 steel with a secondary phase exhibited excellent electroless Ni plating behaviour, which enhances the safety and durability of Li-ion batteries. Furthermore, uniform plating and electrochemical behaviour were achieved after 180 s, suggesting that SAF2507 is superior to AISI304. These findings contribute to the development of safer and more efficient batteries and address the growing demand for Li-ion battery case materials.

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Ionic conductive membrane suitable for sodium metal batteries

Zhao,

Shen,

Che

et al. 2024

Journal of Membrane Science

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High-voltage ionic liquid-based flexible solid polymer electrolyte for high-performance Li-ion batteries

Abstract: Imidazolium-ionic liquid-based solid polymer electrolyte (SPE) membrane was developed for Li-ion batteries. The low viscous 1-ethyl-3methylimidazoilium bis(trifluoromethane sulfonyl)imide [EMIM][TFSI] ionic liquid is found to be more compatible with polymer matrix...

Cited by 5 publications

References 59 publications

Crystallization of Secondary Phase on Super-Duplex Stainless Steel SAF2507: Advanced Li-Ion Battery Case Materials

Crystallization of Secondary Phase on Super-Duplex Stainless Steel SAF2507: Advanced Li-Ion Battery Case Materials

Study of Electroless Nickel Plating on Super Duplex Stainless Steel for Lithium-Ion Battery Cases: Electrochemical Behaviour and Effects of Plating Time

Ionic conductive membrane suitable for sodium metal batteries

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