Characteristics of local atomic configurations in ball‐milled fullerenes

Abstract

Structural changes occurring in C 60 fullerenes after ball-milling processing were studied. The quantitative characteristics of the local atomic configurations were reconstructed by the reverse Monte Carlo method in the structure of pristine and ball-milled fullerenes C 60 , respectively. It is shown that 3-fold atomic rings, indicating complete amorphization of crystalline fullerenes, are dominant in the structure of material after 14 h treatment. The behavior of the distribution of the sphericity coefficient of Voronoi polyhedra validates a gradual structural disordering of molecular crystal of C 60 and, respectively, the formation of amorphous carbon with randomly arranged closepacked structure after continuous ball-milling treatment.

Abnormally High‐Lithium Storage in Pure Crystalline C60 Nanoparticles

“…The large size of pure C 60 products (several micrometers or larger) [22,23] limits their performance; thus, nanosized solid C 60 could be effective in observing the unambiguous redox reaction and investigating the structural evolution during the initial experimental stage. However, producing a sufficient amount of high-purity C 60 nanoparticles (NPs) with a relatively uniform size using previously reported methods, such as handgrinding, [24,25] rubbing, [26] and ball milling [27] of solid C 60 and chemical synthesis [28,29] (Table S1, Supporting Information), is difficult. Therefore, to evaluate the electrochemical reaction mechanism of pure fcc C 60 in LIBs, it is crucial to develop a synthesis method for the mass production of solid pure C 60 NPs.…”