Investigation of the electrochemical intercalation of Ca2+ into graphite layer carbon nano filaments as a novel electrode material for calcium-ion batteries

Abstract

Article Highlights Marimo nano carbon, an aggregate of carbon nanofilaments, was shown to intercalate Ca2+ or solvated Ca2+. The graphite structure of carbon nanofilaments was developed via heat treatment. The strength of interaction with solvent molecules differed depending on the Ca salt. Marimo nano carbon exhibited higher charge/discharge capacity than natural graphite.

Keywords

• Calcium-ion battery
• Carbon nanofilament
• Electrochemical intercalation
• Heat treatment
• Marimo nano carbon