Redox-active zinc thiolates for low-cost aqueous rechargeable Zn-ion batteries.

ABSTRACT: Aqueous zinc-ion batteries (AZIBs) are promising candidates for large-scale electrical energy storage due to the inexpensive, safe, and non-toxic nature of zinc. One key area that requires further development is electrode materials that store Zn²⁺ ions with high reversibility and fast kinetics. To determine the viability of low-cost organosulfur compounds as OEMs for AZIBs, we investigate how structural modification affects electrochemical performance in Zn-thiolate complexes 1 and 2. Remarkably, modification of one thiolate in 1 to sulfide in 2 reduces the voltage hysteresis from 1.04 V to 0.15 V. While 1 exhibits negligible specific capacity due to the formation of insulating DMcT polymers, 2 delivers a capacity of 107 mA h g^-1 with a primary discharge plateau at 1.

SUBMITTER: Tuttle MR 

PROVIDER: S-EPMC8635210 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature