Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-Annealing

Lithium argyrodite Li6PS5Cl powders are synthesized from Li2S, P2S5, and LiCl via wet milling and post-annealing at 500°C for 4 h. Organic solvents such as hexane, heptane, toluene, and xylene are used during the wet milling process. The phase evolution, powder morphology, and electrochemical proper...

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Main Authors: Jae Min Lee, Young Seon Park, Ji-Woong Moon, Haejin Hwang
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-12-01
Series:Frontiers in Chemistry
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fchem.2021.778057/full
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author Jae Min Lee
Young Seon Park
Ji-Woong Moon
Haejin Hwang
author_facet Jae Min Lee
Young Seon Park
Ji-Woong Moon
Haejin Hwang
author_sort Jae Min Lee
collection DOAJ
description Lithium argyrodite Li6PS5Cl powders are synthesized from Li2S, P2S5, and LiCl via wet milling and post-annealing at 500°C for 4 h. Organic solvents such as hexane, heptane, toluene, and xylene are used during the wet milling process. The phase evolution, powder morphology, and electrochemical properties of the wet-milled Li6PS5Cl powders and electrolytes are studied. Compared to dry milling, the processing time is significantly reduced via wet milling. The nature of the solvent does not affect the ionic conductivity significantly; however, the electronic conductivity changes noticeably. The study indicates that xylene and toluene can be used for the wet milling to synthesize Li6PS5Cl electrolyte powder with low electronic and comparable ionic conductivities. The all-solid-state cell with the xylene-processed Li6PS5Cl electrolyte exhibits the highest discharge capacity of 192.4 mAh·g−1 and a Coulombic efficiency of 81.3% for the first discharge cycle.
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spelling doaj.art-6c2a4be5b3eb402a96b44dd5a5dc24e72022-12-21T19:23:10ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462021-12-01910.3389/fchem.2021.778057778057Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-AnnealingJae Min Lee0Young Seon Park1Ji-Woong Moon2Haejin Hwang3Department of Materials Science and Engineering, Inha University, Incheon, South KoreaDepartment of Materials Science and Engineering, Inha University, Incheon, South KoreaBattery Materials Research Center, Research Institute of Industrial Science and Technology, Pohang, South KoreaDepartment of Materials Science and Engineering, Inha University, Incheon, South KoreaLithium argyrodite Li6PS5Cl powders are synthesized from Li2S, P2S5, and LiCl via wet milling and post-annealing at 500°C for 4 h. Organic solvents such as hexane, heptane, toluene, and xylene are used during the wet milling process. The phase evolution, powder morphology, and electrochemical properties of the wet-milled Li6PS5Cl powders and electrolytes are studied. Compared to dry milling, the processing time is significantly reduced via wet milling. The nature of the solvent does not affect the ionic conductivity significantly; however, the electronic conductivity changes noticeably. The study indicates that xylene and toluene can be used for the wet milling to synthesize Li6PS5Cl electrolyte powder with low electronic and comparable ionic conductivities. The all-solid-state cell with the xylene-processed Li6PS5Cl electrolyte exhibits the highest discharge capacity of 192.4 mAh·g−1 and a Coulombic efficiency of 81.3% for the first discharge cycle.https://www.frontiersin.org/articles/10.3389/fchem.2021.778057/fullall-solid-state batterylithium argyroditemillingconductivitydischarge capacity
spellingShingle Jae Min Lee
Young Seon Park
Ji-Woong Moon
Haejin Hwang
Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-Annealing
Frontiers in Chemistry
all-solid-state battery
lithium argyrodite
milling
conductivity
discharge capacity
title Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-Annealing
title_full Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-Annealing
title_fullStr Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-Annealing
title_full_unstemmed Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-Annealing
title_short Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-Annealing
title_sort ionic and electronic conductivities of lithium argyrodite li6ps5cl electrolytes prepared via wet milling and post annealing
topic all-solid-state battery
lithium argyrodite
milling
conductivity
discharge capacity
url https://www.frontiersin.org/articles/10.3389/fchem.2021.778057/full
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AT jiwoongmoon ionicandelectronicconductivitiesoflithiumargyroditeli6ps5clelectrolytespreparedviawetmillingandpostannealing
AT haejinhwang ionicandelectronicconductivitiesoflithiumargyroditeli6ps5clelectrolytespreparedviawetmillingandpostannealing