Figure 5

The distribution of CNT diameter size by count is compared between the CNT product formed om lithium carbonate electrolyte, either containing 0.67 m Li₂O (top), or 0.67 m CaO·B₂O₃ (bottom). After the same electrolysis, but in a pure Li₂CO₃ electrolyte (without additives), the average CNT diameter after a 4 h electrolysis is ~ 130 to 160 nm.