Electrochemical synthesis of lithium fullerides

Chem. Met. Alloys 6 (2013) 40-42

https://doi.org/10.30970/cma6.0238

A.O. ZUL’FIGAROV, V.A. POTASKALOV, A.P. POMYTKIN, A.A. ANDRIIKO, D.V. SHCHUR, O.A. KRIUKOVA, V.G. KHOMENKO

The electrochemical reaction of Li with fullerene in an aprotic electrolyte was studied. It was found that a lithium-rich fulleride with approximate formula Li₁₀C₆₀ can be obtained in the presence of a catalyst. This amount of Li is irreversibly incorporated into the structure. Additionally, 4-5 atoms can be introduced reversibly, thus allowing cycling the material with an initial reversible capacity of about 180 mAh·g^-1. The pyrolysis product of a heterometal complex with monoaminoethanol ligands is shown to be a good catalyst for this process.

Galvanostatic curves of Li⁺ reduction on fullerene C₆₀ at a specific current of 40 mA·g^-1.

1 – initial sample; 2 – fullerene with grafted 2Co-Ni complex with monoethanol amine;

3 – the same with the complex pyrolized in argon at 500°C

Keywords

Fullerene / Lithium fulleride / Electrochemical synthesis