Superior ion-conducting hybrid solid electrolyte for all-solid-state batteries.
Herein, we developed a high-performance lithium ion conducting hybrid solid electrolyte, consisted of LiTFSI salt, Py14 TFSI ionic liquid, and TiO2 nanoparticles. The hybrid solid electrolyte prepared by a facile method had high room temperature ionic conductivity, excellent thermal stability and low interface resistance with good contact. In addition, the lithium transference number was highly increased by the scavenger effect of TiO2 nanoparticles. With the hybrid solid electrolyte, the pouch-type solid-state battery exhibited high initial discharge capacity of 150 mA h g(-1) at room temperature, and even at 1 C, the reversible capacity was as high as 106 mA h g(-1) .
School of Energy&Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 689-798 Ulsan (Republic of Korea); Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg (Sweden). jaekwang@unist.ac.kr.
Jae-Kwang
JK
Kim
Johan
J
Scheers
Tae Joo
TJ
Park
Youngsik
Y
Kim
D011211:Electric Power Supplies; D004573:Electrolytes; D006845:Hydrocarbons, Fluorinated / Q000737:chemistry*; D007094:Imides / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
D004573:Electrolytes; D006845:Hydrocarbons, Fluorinated; D007094:Imides; D052578:Ionic Liquids; C009495:titanium dioxide; D008094:Lithium; D014025:Titanium
anions; electrochemistry; energy storage; ion pairs; nanoparticles