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Pseudo-binary electrolyte, LiBH4-LiCl, for bulk-type all-solid-state lithium-sulfur battery.
Nanotechnology 2015; 26(25):254001N

Abstract

The ionic conduction and electrochemical and thermal stabilities of the LiBH4-LiCl solid-state electrolyte were investigated for use in bulk-type all-solid-state lithium-sulfur batteries. The LiBH4-LiCl solid-state electrolyte exhibiting a lithium ionic conductivity of [Formula: see text] at 373 K, forms a reversible interface with a lithium metal electrode and has a wide electrochemical potential window up to 5 V. By means of the high-energy mechanical ball-milling technique, we prepared a composite powder consisting of elemental sulfur and mixed conductive additive, i.e., Ketjen black and Maxsorb. In that composite powder, homogeneous dispersion of the materials is achieved on a nanometer scale, and thereby a high concentration of the interface among them is induced. Such nanometer-scale dispersals of both elemental sulfur and carbon materials play an important role in enhancing the electrochemical reaction of elemental sulfur. The highly deformable LiBH4-LiCl electrolyte assists in the formation of a high concentration of tight interfaces with the sulfur-carbon composite powder. The LiBH4-LiCl electrolyte also allows the formation of the interface between the positive electrode and the electrolyte layers, and thus the Li-ion transport paths are established at that interface. As a result, our battery exhibits high discharge capacities of 1377, 856, and 636 mAh g(-1) for the 1st, 2nd, and 5th discharges, respectively, at 373 K. These results imply that complex hydride-based solid-state electrolytes that contain Cl-ions in the crystal would be integrated into rechargeable batteries.

Authors+Show Affiliations

WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26041380

Citation

Unemoto, Atsushi, et al. "Pseudo-binary Electrolyte, LiBH4-LiCl, for Bulk-type All-solid-state Lithium-sulfur Battery." Nanotechnology, vol. 26, no. 25, 2015, p. 254001.
Unemoto A, Chen C, Wang Z, et al. Pseudo-binary electrolyte, LiBH4-LiCl, for bulk-type all-solid-state lithium-sulfur battery. Nanotechnology. 2015;26(25):254001.
Unemoto, A., Chen, C., Wang, Z., Matsuo, M., Ikeshoji, T., & Orimo, S. (2015). Pseudo-binary electrolyte, LiBH4-LiCl, for bulk-type all-solid-state lithium-sulfur battery. Nanotechnology, 26(25), p. 254001. doi:10.1088/0957-4484/26/25/254001.
Unemoto A, et al. Pseudo-binary Electrolyte, LiBH4-LiCl, for Bulk-type All-solid-state Lithium-sulfur Battery. Nanotechnology. 2015 Jan 26;26(25):254001. PubMed PMID: 26041380.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Pseudo-binary electrolyte, LiBH4-LiCl, for bulk-type all-solid-state lithium-sulfur battery. AU - Unemoto,Atsushi, AU - Chen,ChunLin, AU - Wang,Zhongchang, AU - Matsuo,Motoaki, AU - Ikeshoji,Tamio, AU - Orimo,Shin-Ichi, Y1 - 2015/06/04/ PY - 2015/6/5/entrez PY - 2015/6/5/pubmed PY - 2015/6/5/medline SP - 254001 EP - 254001 JF - Nanotechnology JO - Nanotechnology VL - 26 IS - 25 N2 - The ionic conduction and electrochemical and thermal stabilities of the LiBH4-LiCl solid-state electrolyte were investigated for use in bulk-type all-solid-state lithium-sulfur batteries. The LiBH4-LiCl solid-state electrolyte exhibiting a lithium ionic conductivity of [Formula: see text] at 373 K, forms a reversible interface with a lithium metal electrode and has a wide electrochemical potential window up to 5 V. By means of the high-energy mechanical ball-milling technique, we prepared a composite powder consisting of elemental sulfur and mixed conductive additive, i.e., Ketjen black and Maxsorb. In that composite powder, homogeneous dispersion of the materials is achieved on a nanometer scale, and thereby a high concentration of the interface among them is induced. Such nanometer-scale dispersals of both elemental sulfur and carbon materials play an important role in enhancing the electrochemical reaction of elemental sulfur. The highly deformable LiBH4-LiCl electrolyte assists in the formation of a high concentration of tight interfaces with the sulfur-carbon composite powder. The LiBH4-LiCl electrolyte also allows the formation of the interface between the positive electrode and the electrolyte layers, and thus the Li-ion transport paths are established at that interface. As a result, our battery exhibits high discharge capacities of 1377, 856, and 636 mAh g(-1) for the 1st, 2nd, and 5th discharges, respectively, at 373 K. These results imply that complex hydride-based solid-state electrolytes that contain Cl-ions in the crystal would be integrated into rechargeable batteries. SN - 1361-6528 UR - https://www.unboundmedicine.com/medline/citation/26041380/Pseudo_binary_electrolyte_LiBH4_LiCl_for_bulk_type_all_solid_state_lithium_sulfur_battery_ L2 - https://doi.org/10.1088/0957-4484/26/25/254001 DB - PRIME DP - Unbound Medicine ER -