text: Yo, check it out, I got something to say,
  About electroreduction of CO2 in a new way.
  Metal-free carbon catalysts, they got the potential,
  But the challenge remains, the results ain't sequential.
  
  The activity's unsatisfactory, the selectivity's weak,
  But hold up, listen close, 'cause I got a technique.
  We found a solution, a successful case,
  To boost CO2-to-CO conversion at a remarkable pace.
  
  Carbon black and nitrogen-doped, that's what we began,
  But we took it further, introduced some fluorine, goddamn!
  The faradaic efficiency of CO shot through the ceiling,
  From 12.8% to 93.1%, we got that feeling.
  
  N-CB and CB, they couldn't compete,
  But the nitrogen and fluorine co-doped, they couldn't be beat.
  At -0.7 V, we saw the magic unfold,
  With a durable current density that wouldn't fold.
  
  For 23 hours straight, it kept going strong,
  With a partial current density that couldn't go wrong.
  N,F-CB had the edge, we knew it was the best,
  With catalytic areas and N active sites, we passed the test.
  
  Fluorine doping inspired, made the difference clear,
  Polyvinylidene fluoride, our nitrogen fixator, my dear.
  It protected the catalyst, no nitrogen escaped,
  And the number of nitrogen sites, it skyrocketed, no debate.
  
  4.4 times higher than N-CB, it's a massive gain,
  And with PVDF as the area extender, we broke the chain.
  The catalytic area improved, the surface expanded,
  8.7 and 6.9 times higher, it's just as we planned it.
  
  So remember this lesson, my friend, it's crucial to note,
  Heteroatoms can manipulate, catalytic activity they promote.
  More active sites, larger catalytic area, that's the key,
  And carbon materials hold the power, that's what we see.
  
  This work, it's groundbreaking, an insight profound,
  With rap and science combined, we're breaking new ground.
  Electroreduction of CO2, we're moving ahead,
  Thanks to metal-free carbon catalysts, we're making progress, it's said.