Reversible thixotropic gel electrolytes for safer and shape-versatile lithium-ion batteries

Kim, Ju Young; Shin, Dong Ok; Kim, Se Hee; Lee, Jun Ho; Kim, Kwang Man; Oh, Jae‐Eung; Lee, Myeong Ju; Yang, Yil Suk; Lee, Sang Young; Kim, Je Young; Lee, Young Gi

doi:10.1016/j.jpowsour.2018.08.098

Cited by 16 publications

(5 citation statements)

References 36 publications

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“…The prepared solid polymer electrolyte exhibited good thermal stability and electrochemical properties. A gel electrolyte consisting of a fluoropolymer/cellulose derivative matrix and liquid electrolyte was fabricated with reversible thixotropic transformation and abuse tolerance [47]. The electrolyte displayed high ionic conductivity and low crystallinity.…”

Section: Gel Polymer Electrolytesmentioning

confidence: 99%

Recent Advances in Non-Flammable Electrolytes for Safer Lithium-Ion Batteries

2019

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Lithium-ion batteries are the most commonly used source of power for modern electronic devices. However, their safety became a topic of concern after reports of the devices catching fire due to battery failure. Making safer batteries is of utmost importance, and several researchers are trying to modify various aspects in the battery to make it safer without affecting the performance of the battery. Electrolytes are one of the most important parts of the battery since they are responsible for the conduction of ions between the electrodes. In this paper, we discuss the different non-flammable electrolytes that were developed recently for safer lithium-ion battery applications.

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Section: Gel Polymer Electrolytesmentioning

confidence: 99%

Recent Advances in Non-Flammable Electrolytes for Safer Lithium-Ion Batteries

2019

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“…The simple ink preparation, user-friendly operation, and high production efficiency make screen printing a good tool to fabricate both electrodes and SSEs for batteries. [50][51][52]…”

Section: Major Printing Techniques For Solidstate Batteriesmentioning

confidence: 99%

Challenge-driven printing strategies toward high-performance solid-state lithium batteries

2022

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“…Recently, all-solid-state batteries (ASSBs) have emerged as a promising solution to meet the relentless pursuit of safe and high-energy storage systems and resolve critical safety issues. − Exploiting a mechanically robust and thermally stable solid electrolyte (SE) in place of the LE could enable the employment of Li metal (∼3860 mA h g –1 ) and prevent the possible thermal runaway mainly resulting from the flammable LE. Additionally, to accomplish ASSBs, the SE needs to be incorporated during the electrode manufacturing step to compensate for the absence of ionic connection flow provided by the LE.…”

Section: Introductionmentioning

confidence: 99%

Effect of Lithium Substitution Ratio of Polymeric Binders on Interfacial Conduction within All-Solid-State Battery Anodes

Shin

Kim

Choi

et al. 2023

ACS Appl. Mater. Interfaces

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Problematic issues with electrically inert binders have been less serious in the conventional lithium-ion batteries by virtue of permeable liquid electrolytes (LEs) for ionic connection and/or carbonaceous additives for electronic connection in the electrodes. Contrary to electron-conductive binders used to maximize an active loading level, the development of ion-conductive binders has been lacking owing to the LE-filled electrode configuration. Herein, we represent a tactical strategy for improving the interfacial Li+ conduction in all-solid-state electrolyte-free graphite (EFG) electrodes where the solid electrolytes are entirely excluded, using lithium-substitution-modulated (LSM) binders. Finely tuning a lithium substitution ratio, a conductive LSM–carboxymethyl cellulose (CMC) binder is prepared from a controlled direct Na+/Li+ exchange reaction without a hazardous acid involvement. The EFG electrode employing LSM with a maximum degree of substitution of lithium (DSLi) of ∼68% in our study shows a considerably higher rate capability of 1.05 mA h cm–2 at 1 C and a capacity retention of ∼61.9% after 200 cycles at 0.5 C than those using sodium-CMC (Na-CMC) (0.78 mA h cm–2, ∼49.5%) and LSM with ∼35% lithium substitution (0.93 mA h cm–2, ∼55.4%). More importantly, the correlation between the phase transition near the bottom region of the EFG electrode and the state of charge (SOC) is systematically investigated, clarifying that the improvement of the interfacial conduction is proportional to the DSLi of the CMC binders. Theoretical calculations combined with experimental results further verify that creating the continuous interface through abundant pathways for mobile ions using the Li+-conductive binder is the enhancement mechanism of the interfacial conduction in the EFG electrode, mitigating serious charge transfer resistance.

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Reversible thixotropic gel electrolytes for safer and shape-versatile lithium-ion batteries

Cited by 16 publications

References 36 publications

Recent Advances in Non-Flammable Electrolytes for Safer Lithium-Ion Batteries

Recent Advances in Non-Flammable Electrolytes for Safer Lithium-Ion Batteries

Challenge-driven printing strategies toward high-performance solid-state lithium batteries

Effect of Lithium Substitution Ratio of Polymeric Binders on Interfacial Conduction within All-Solid-State Battery Anodes

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