Fast Lithium Ion Conduction in Lithium Phosphidoaluminates.

ABSTRACT: Solid electrolyte materials are crucial for the development of high-energy-density all-solid-state batteries (ASSB) using a nonflammable electrolyte. In order to retain a low lithium-ion transfer resistance, fast lithium ion conducting solid electrolytes are required. We report on the novel superionic conductor Li₉ AlP₄ which is easily synthesised from the elements via ball-milling and subsequent annealing at moderate temperatures and which is characterized by single-crystal and powder X-ray diffraction. This representative of the novel compound class of lithium phosphidoaluminates has, as an undoped material, a remarkable fast ionic conductivity of 3 mS cm^-1 and a low activation energy of 29 kJ mol^-1 as determined by impedance spectroscopy. Temp

SUBMITTER: Restle TMF 

PROVIDER: S-EPMC7154659 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature