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Abstract
Calcium’s high reactivity typically causes surface passivation, limiting its applicability in electrochemical devices, such as batteries. Here we harness this very reactivity to form an electrolyte in situ from a Ca-free borate–amine precursor. The resulting electrolyte enables reversible Ca plating and stripping in various cells and under difficult conditions, advancing calcium battery development.
Supplementary materials
Title
Supplementary information
Description
Detailed materials and methods, precursor design rationale, electrochemical protocols and cycling procedures. Supplementary SEM/EDX analyses and electrochemical data.
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