Tailoring of the electrochemical stability and dielectric behaviour of inorganic matrix-based ionogels

Gupta, Sarvesh Kumar; Gupta, Abhishek Kumar; Yadav, Rajesh K.; Badatya, Simadri; Gupta, Manoj

doi:10.1088/1402-4896/ac6d20

Cited by 4 publications

(2 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…32 It has been achieved good success in understanding the electrochemical stability of the system by HOMO and LUMO. 39,40,62 With the aim of gaining insights into the redox properties of electrolytes, the HOMO and LUMO, and the spin densities of redox states are analyzed.…”

Section: Resultsmentioning

confidence: 99%

Theoretical Study of the Electrochemical Properties for Solid Electrolytes Containing Ethoxy and Carbonate Groups

Zhao¹,

Wang²,

Zhao³

et al. 2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

Density functional theory calculations are performed to investigate the redox properties of dual functional groups polymer (polycarbonate possessing ethoxy side groups (PEtGEC), poly(diethylene glycol carbonate) (PDEC), poly(triethylene glycol carbonate) (PTEC)) electrolytes containing carbonate and ethoxy groups, and coordination structures and interactions of Li+ ions with polymers. The oxidation and reduction processes of dual functional groups polymers occur on the ethoxy and carbonate groups, respectively. The electrochemical windows of PEtGEC (4.08 V) and PDEC (4.42 V) electrolytes are predicted by calculations. The oxidation potentials of electrolytes are defined by the polymers, and the electrolytes without branched chains have better oxidation stability. The reduction potentials are controlled by the salt anion, and the structure of lithium salt changes during the reduction process. The simulated infrared spectra show that Li+ ions interact with the carbonyl and ether oxygen atoms of polymers. The number of oxygen atoms that coordinate with the Li+ ion in these electrolytes is 4-5. The PEtGEC electrolyte has favorable transport ability due to its loose coordination environment and easy formation, the transformation between configurations, the dual-path of Li+ ions transport and good long range transport ability. These findings provide theoretical guidance for designing solid electrolytes in the future.

show abstract

Section: Resultsmentioning

confidence: 99%

Theoretical Study of the Electrochemical Properties for Solid Electrolytes Containing Ethoxy and Carbonate Groups

Zhao¹,

Wang²,

Zhao³

et al. 2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…In terms of the inorganic matrix, most current studies focus on SiO 2 , TiO 2 , ZrO 2 , Al 2 O 3 , etc., while there are relatively few reports about other inorganic materials. [227] As to polymer matrix, PIL is suitable for ionogel matrix due to its good machinability and excellent performance of ILs. Moreover, MOFs have also attracted much attention recently because of their excellent insulation and porosity, which can be used as host materials for gel electrolytes, providing new approaches for developing ionogel electrolytes.…”

Section: Common Problems and Prospectsmentioning

confidence: 99%

Hybrid Ionogel Electrolytes for Advanced Lithium Secondary Batteries: Developments and Challenges

Tao

et al. 2022

Chemistry An Asian Journal

View full text Add to dashboard Cite

Incidents in the use of lithium-ion batteries are usually caused by the malfunction of flammable organic liquid electrolytes with poor thermal stability. Therefore, the development of noncombustible electrolytes is regarded as one of the most effective means to prevent the safety hazards of lithium-ion batteries. Ionic liquids have attracted much interest recently, mainly due to their high ionic conductivity, low volatility, and incombustibility. The application of ionic liquids to the preparation of quasi-solid-state gel electrolytes combines the advantages of ionic liquids and avoids the risks of organic liquid electrolytes. Therefore, the solid-state ionogels have been considered as a promising alternative electrolyte system, especially for the much-desired energy storage devices with higher energy density and flexibility. This review focuses on the recent progress of ionogel electrolytes for lithium-ion batteries. The preparation strategies for ionogel electrolytes based on different frameworks, namely inorganic matrix, organic matrix, and organicinorganic hybrid matrix, are discussed. Subsequently, efforts to improve the properties of the ionogel electrolytes, including the ionic conductivity, mechanical properties, and lithium-ion transfer number, are summarized. Besides, the applications of ionogel electrolytes in high-voltage lithiumion batteries and lithium metal batteries as well as the batteries under extreme environments are outlined. Finally, the perspectives on studying and improving the performances of ionogel electrolytes for advanced lithium-ion batteries are provided.

show abstract

Theoretical Study on the Electronic Structure of Polymer-in-Salt/Ionic Liquid-Based Biodegradable Gel Polymer Electrolyte

Arya,

Gupta

2024

Braz J Phys

View full text Add to dashboard Cite

Tailoring of the electrochemical stability and dielectric behaviour of inorganic matrix-based ionogels

Cited by 4 publications

References 76 publications

Theoretical Study of the Electrochemical Properties for Solid Electrolytes Containing Ethoxy and Carbonate Groups

Theoretical Study of the Electrochemical Properties for Solid Electrolytes Containing Ethoxy and Carbonate Groups

Hybrid Ionogel Electrolytes for Advanced Lithium Secondary Batteries: Developments and Challenges

Theoretical Study on the Electronic Structure of Polymer-in-Salt/Ionic Liquid-Based Biodegradable Gel Polymer Electrolyte

Contact Info

Product

Resources

About