TY - JOUR
T1 - Toward High-Voltage Solid-State Li-Metal Batteries with Double-Layer Polymer Electrolytes
AU - Arrese-Igor, Mikel
AU - Martinez-Ibañez, María
AU - Pavlenko, Ekaterina
AU - Forsyth, Maria
AU - Zhu, Haijin
AU - Armand, Michel
AU - Aguesse, Frédéric
AU - López-Aranguren, Pedro
N1 - Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022/4/8
Y1 - 2022/4/8
N2 - Solid polymer electrolyte batteries with a Li-metal anode and high-voltage active materials hold promising prospects to increase the energy density and improve the safety of conventional Li-ion batteries. An adequate choice of the polymers used for the cathode (catholyte) and for the separator (electrolyte) to create a sufficient energy gap and improve the chemical compatibility at both the positive electrode and Li-metal anode is required. The present work highlights the advantages of the double-layer polymer electrolyte approach in cells with a LiNixMnyCozO2 active material, a poly(propylene carbonate) (PPC) catholyte, and a poly(ethylene oxide) (PEO) electrolyte. Replacing PEO in the catholyte with PPC results in a remarkably improved cycling performance. In addition, the higher lithium transference number of electrolytes with single lithium ion conductors leads to a smooth cycling of solid-state batteries. Cells with 1 mAh cm-2 deliver 160 mAh g-1, with a capacity retention above 80% over 80 cycles and a Coulombic efficiency close to 100%.
AB - Solid polymer electrolyte batteries with a Li-metal anode and high-voltage active materials hold promising prospects to increase the energy density and improve the safety of conventional Li-ion batteries. An adequate choice of the polymers used for the cathode (catholyte) and for the separator (electrolyte) to create a sufficient energy gap and improve the chemical compatibility at both the positive electrode and Li-metal anode is required. The present work highlights the advantages of the double-layer polymer electrolyte approach in cells with a LiNixMnyCozO2 active material, a poly(propylene carbonate) (PPC) catholyte, and a poly(ethylene oxide) (PEO) electrolyte. Replacing PEO in the catholyte with PPC results in a remarkably improved cycling performance. In addition, the higher lithium transference number of electrolytes with single lithium ion conductors leads to a smooth cycling of solid-state batteries. Cells with 1 mAh cm-2 deliver 160 mAh g-1, with a capacity retention above 80% over 80 cycles and a Coulombic efficiency close to 100%.
UR - http://www.scopus.com/inward/record.url?scp=85127575879&partnerID=8YFLogxK
U2 - 10.1021/acsenergylett.2c00488
DO - 10.1021/acsenergylett.2c00488
M3 - 文章
AN - SCOPUS:85127575879
SN - 2380-8195
VL - 7
SP - 1473
EP - 1480
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 4
ER -