Electrochemical synthesis of lithium fullerides

 

Chem. Met. Alloys 6 (2013) 40-42

 

A.O. ZULFIGAROV, 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 mAhg-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 mAg-1.

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

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

 

Keywords

Fullerene / Lithium fulleride / Electrochemical synthesis