A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries.

ABSTRACT: Ca metal anode rechargeable batteries are seen as a sustainable high-energy density and high-voltage alternative to the current Li-ion battery technology due to the low redox potential of Ca metal and abundance of Ca. Electrolytes are key enablers on the path towards next-generation battery systems. Within this work, we synthesize a new calcium tetrakis(hexafluoroisopropyloxy) aluminate salt, Ca[Al(hfip)₄]₂, and benchmark it versus the state-of-the-art boron analogue Ca[B(hfip)₄]₂. The newly developed aluminate-based electrolyte exhibits improved performance in terms of conductivity, Ca plating/stripping efficiency, and oxidative stability as well as Ca battery cell performance. A marked improvement of 0.5 V higher oxidative stability can

SUBMITTER: Pavcnik T 

PROVIDER: S-EPMC10335333 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature