进一步增加氟硼酸铵的量，F原子成功嵌入碳材料，而N原子含量减少，这是由

With further increase in the amount of ammonium fluoroborate, F atoms were successfully inserted into the carbon material, while the content of N atoms decreased. This is due to the fact that doped F atoms occupy some sites where N species will be formed, resulting in relatively few N sites.

Further increasing the amount of ammonium fluoroborate, the F-atom is successfully embedded in the carbon material, while the N-atom content is reduced because doped F-atoms occupy some of the bits that will form N species, resulting in a relatively small number of N-bits.

Further increasing the amount of ammonium fluoborate, F atoms are successfully embedded into the carbon materials, while the content of N atoms decreases. This is because the doped F atoms occupy some sites that can form n species, resulting in relatively few N sites.<br>