BROWSE

Related Researcher

Author's Photo

Jung, Yoon Seok
Electrochemical Solid-State Energy Storage Lab
Research Interests
  • Batteries, All-solid-state batteries, solid electrolytes, electrodes, atomic layer deposition,energy storage devices

ITEM VIEW & DOWNLOAD

High lithium ion conducting Li2S-GeS2-P2S5 glass-ceramic solid electrolyte with sulfur additive for all solid-state lithium secondary batteries

Cited 17 times inthomson ciCited 17 times inthomson ci
Title
High lithium ion conducting Li2S-GeS2-P2S5 glass-ceramic solid electrolyte with sulfur additive for all solid-state lithium secondary batteries
Author
Trevey, James E.Jung, Yoon SeokLee, Se-Hee
Keywords
Lithium battery; Solid-state battery; Solid-state electrolyte; Sulfide; Lithium cobalt oxide
Issue Date
2011-04
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ELECTROCHIMICA ACTA, v.56, no.11, pp.4243 - 4247
Abstract
Glass-ceramic Li2S-GeS2-P2S5 electrolytes were prepared by a single step ball milling (SSBM) process. Various compositions of Li4-xGe1-xPxS4 from x = 0.70 to x =1.00 were systematically investigated. Structural analysis by X-ray diffraction (XRD) showed gradual increase of the lattice constant followed by significant phase change with increasing GeS2. All-solid-state LiCoO2/Li cells were tested by constant-current constant-voltage (CCCV) charge-discharge cycling at a current density of 50 mu A cm(-2) between 2.5 and 4.3V (vs. Li/Li+). In spite of the high conductivity of the solid-state electrolyte (SSE), LiCoO2/Li cells showed a large irreversible reaction especially during the first charging cycle. Limitation of instability of Li2S-GeS2-P2S5 in contact with Li was solved by using double layer electrolyte configuration: Li/(Li2S-P2S5/Li2S-GeS2-P2S5)/LiCoO2. LiCoO2 with SSEs heat-treated with elemental sulfur at elevated temperature exhibited a discharge capacity of 129 mAhg(-1) at the second cycle and considerably improved cycling stability. (C) 2011 Elsevier Ltd. All rights reserved.
URI
Go to Link
DOI
10.1016/j.electacta.2011.01.086
ISSN
0013-4686
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
1-s2.0-S0013468611001472-main.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU