Tetramethylpyrazine: an electrolyte additive for high capacity and energy efficiency lithium-oxygen batteries.

ABSTRACT: Lithium-oxygen batteries have attracted great attention in recent years owing to their extremely high theoretical energy density, however, factors such as low actual capacity and poor rate performance hinder the practical application of lithium-oxygen batteries. In this work, a novel electrolyte additive, tetramethylpyrazine (TMP), is introduced into an electrolyte system to enhance the electrochemical performance of the lithium-oxygen batteries. TMP does not undergo its own redox reaction within the charge-discharge voltage range, which will not affect the electrochemical stability of the electrolyte. The results show that the addition of TMP can increase the reduction current of oxygen, which will promote the ORR process, and with an optimal TMP content (50 mM), the cell shows a high dis

SUBMITTER: Song M 

PROVIDER: S-EPMC9036872 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature