Coupling dual metal active sites and low-solvation architecture toward high-performance aqueous ammonium-ion batteries.

ABSTRACT: Aqueous rechargeable ammonium-ion batteries (AIBs) possess the characteristics of safety, low cost, environmental friendliness, and fast diffusion kinetics. However, their energy density is often limited due to the low specific capacity of cathode materials and narrow electrochemical stability windows of electrolytes. Herein, high-performance aqueous AIBs were designed by coupling Fe-substituted manganese-based Prussian blue analog (FeMnHCF) cathodes and highly concentrated NH₄CF₃SO₃ electrolytes. In FeMnHCF, Mn³⁺/Mn²⁺-N redox reaction at high potential was introduced, and two metal active redox species of Mn and Fe were achieved. To match such FeMnHCF cathodes, highly concentrated NH₄CF₃SO₃ electrolyte

SUBMITTER: Du L 

PROVIDER: S-EPMC9897483 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature