There is no proof whatsoever that Zoro used aCoC.
The lightning we see is coming from Lucci's wound, which is just an indicator for hakified attack.
This has nothing to do with aCoC as it is present in most CoA attacks.
It can be found on Luffy vs Katakuri or Luffy vs Ulti.
The only indicator of aCoC is trails behind the weapon and there are none.
When you realize that Zoro didn't need aCoC to scar Kaido who is far tougher than Lucci, you realize that Zoro doesn't need aCoC to fk up Lucci.