Facile fabrication of solution-processed solid-electrolytes for high-energy-density all-solid-state-batteries by enhanced interfacial contact.

Scientific Reports
Min-Ju KimKang-Jun Baeg

Abstract

Instead of commercial lithium-ion batteries (LIBs) using organic liquid electrolytes, all-solid-state lithium-ion batteries (ASSBs) employing solid electrolytes (SEs) are promising for applications in high-energy-density power applications and electric vehicles due to their potential for improving safety and achieving high capacity. Although remarkable progress in SEs has been achieved and has resulted in high ionic conductivity, which now reaches values comparable to those of liquid electrolytes, the typical use of a slurry process for the fabrication of conventional ASSBs inevitably causes harmful reactions between sulfide materials and polar solvents. Here, we studied the efficient infiltration process of SE slurry into conventional composite LIB electrodes (NCM622) for achieving high-energy-density ASSBs via a scalable solution-based fabrication process. Two methods are proposed to ensure that SE materials are evenly distributed and sufficiently infiltrated into the porous structures of LIB electrodes. The LPSCl SE solutions were effectively infiltrated into the electrodes at higher processing temperatures and the temperature was subsequently optimized at above the boiling point of the ethanol solvent due to the dynamic mot...Continue Reading

References

Jan 27, 2005·Chemical Reviews·M Stanley Whittingham
Dec 29, 2007·Angewandte Chemie·Hans-Jörg DeiserothMarc Schlosser
Jun 23, 2010·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·J-M Tarascon
Aug 2, 2011·Nature Materials·Noriaki KamayaAkio Mitsui
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Mar 1, 2012·Angewandte Chemie·Akira Yoshino
Jan 12, 2013·Journal of the American Chemical Society·Zengcai LiuChengdu Liang

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Methods Mentioned

BETA
X-ray
thermal treatment
scanning

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