期刊
JOURNAL OF POWER SOURCES
卷 303, 期 -, 页码 65-72出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2015.10.101
关键词
All-solid-state battery; Aerosol deposition; Surface coating; Oxide; Interface; Composite
资金
- JST-ALCA
We prepared up to 20 gm-thick LiNi1/3Co1/3Mn1/3O2 (NMC)-Li+ conductive glass-ceramic solid electrolyte (LATP: sigma(+)(Li) similar to 10(-3) S cm(-2) at 298 K) composite cathode films on Li7La3Zr2O12 (LIZ) substrates by aerosol deposition (AD) and investigated their electrochemical properties as all-solid-state batteries. The resultant NMC/LATP interface in the composite film had a thin mutual diffusion layer (similar to 5 nm) and a film had a porosity of ca. 0.15% in volume. The composite films were well adhered to the LIZ substrates even though the films were prepared at room temperature. All-solid-state batteries, consisting of Li/LLZ/NMC-LATP composite film (20 mu m), repeated charge-discharge reactions for 90 cycles at 100 degrees C at a 1/10 C rate (capacity retention: 99.97%/cycle). Rate capability of this battery was improved by modifying both the LATP and electron conductive source amount in the composite film, and a battery with 16 gm-thick composite electrode delivered 60 mAh g(-1) at 1 mA cm(-2). (C) 2015 Elsevier B.V. All rights reserved.
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