Journal
SOLID STATE IONICS
Volume 285, Issue -, Pages 136-142Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2015.05.007
Keywords
Lithium battery; All-solid-state battery; Sulfide electrolyte; Lithium cobalt oxide; Surface coating
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Composite positive electrodes composed of a LiNbO3-coated LiCoO2 active material and a Li10GeP2S12 solid electrolyte were fabricated using a mill pot rotator, applying varying rotation rates, mixing durations and mill ball sizes. Mild grinding with a low rotation rate prevented significant aggregation of Li10GeP2S12 particles during the mixing process, leading to a well-dispersed composite with a large contact area between the LiCoO2 and Li10GeP2S12. An all-solid-state battery using the optimized composite cathode with the Li10GeP2S12 electrolyte and an In-Li anode delivered a first discharge capacity of 124 mAh g(-1), which is equal to the theoretical value for LiCoO2. (C) 2015 Elsevier B.V. All rights reserved.
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