Substrate-independent three-dimensional polymer nanosheets induced by solution casting

Park, Cheol Hun; Go, Eun Min; Lee, Kyung Min; Lee, Chang‐Soo; Kwak, Sang Kyu; Kim, Jong Hak

doi:10.1039/d1sc03232a

Cited by 1 publication

(2 citation statements)

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“…25−28 Among them, the solution casting method is considered to be the simplest and most commonly used method for preparing ASSE. 11,29 The solution casting method is to obtain the ASSE film by removing the solvent from the precursor. However, due to the swelling effect of the polymer, it is difficult to remove all solvents even after a long time of vacuum drying, especially for the solvents with high boiling points such as N-methyl pyrrolidone (NMP) and N,N-dimethylformamide (DMF).…”

Section: ■ Introductionmentioning

confidence: 99%

“…Researchers have developed a variety of ASSE preparation methods, such as the solution casting method, in situ thermal polymerization method, and in situ curing method. − Among them, the solution casting method is considered to be the simplest and most commonly used method for preparing ASSE. , The solution casting method is to obtain the ASSE film by removing the solvent from the precursor. However, due to the swelling effect of the polymer, it is difficult to remove all solvents even after a long time of vacuum drying, especially for the solvents with high boiling points such as N-methyl pyrrolidone (NMP) and N , N -dimethylformamide (DMF). , The residual organic solvent exists in solid electrolytes more or less .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Residual Solvents on Properties of Composite Solid Electrolytes

Tian

Tang

Wang

et al. 2023

ACS Sustainable Chem. Eng.

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Solid-state electrolytes (SSEs) can stabilize lithium (Li) metal anodes and achieve high energy density. However, they often suffer from solvent residues during the preparation. The residual solvent will affect the performance of SSEs. In this paper, we take Li1.5Al0.5Ge1.5P3O12 (LAGP)/Poly(propylene carbonate) (PPC) composite solid electrolyte (CSE) as an example, the content of the solvent residue of CSE prepared by the solution casting method and its effect on performance are investigated. The result reveals that the solvent content decreases with the increase of drying time. It still contains more than 5 wt % solvent even after vacuum drying for 48 h. The presence of residual solvent promotes the binding of lithium ions (Li+) and carbonyls, which is conducive to the transfer of Li+. When the residual solvent content is high, SSE has high ionic conductivity, cycling capacity, and excellent cycling stability. When the solvent content decreases, the electrochemical window becomes wider. This result is of great significance for the future regulation of SSE solvent content.

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Section: ■ Introductionmentioning

confidence: 99%