Open AccessHigh Energy Density Single-Crystal NMC/Li6PS5Cl Cathodes for All-Solid-State Lithium-Metal Batteries
Author(s) -
Christopher Doerrer,
Isaac Capone,
Sudarshan Narayanan,
Junliang Liu,
C.R.M. Grovenor,
Mauro Pasta,
Patrick S. Grant
Publication year - 2021
Publication title -
acs applied materials and interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.535
H-Index - 228
eISSN - 1944-8252
pISSN - 1944-8244
DOI - 10.1021/acsami.1c07952
Subject(s) - materials science , cathode , faraday efficiency , anode , electrolyte , lithium (medication) , composite number , chemical engineering , composite material , electrode , electrical engineering , chemistry , medicine , endocrinology , engineering
To match the high capacity of metallic anodes, all-solid-state batteries require high energy density, long-lasting composite cathodes such as Ni-Mn-Co (NMC)-based lithium oxides mixed with a solid-state electrolyte (SSE). However in practice, cathode capacity typically fades due to NMC cracking and increasing NMC/SSE interface debonding because of NMC pulverization, which is only partially mitigated by the application of a high cell pressure during cycling. Using smart processing protocols, we report a single-crystal particulate LiNi 0.83 Mn 0.06 Co 0.11 O 2 and Li 6 PS 5 Cl SSE composite cathode with outstanding discharge capacity of 210 mA h g -1 at 30 °C. A first cycle coulombic efficiency of >85, and >99% thereafter, was achieved despite a 5.5% volume change during cycling. A near-practical discharge capacity at a high areal capacity of 8.7 mA h cm -2 was obtained using an asymmetric anode/cathode cycling pressure of only 2.5 MPa/0.2 MPa.