A particulate carbon catalyst in which particles having a particle diameter of 20 nm-1 µm account for a volume fraction of at least 45%, and the content of nitrogen atoms is 0.1-10 atomic% relative to the amount of carbon atoms.
A particulate carbon catalyst in which particles having a particle diameter of 20 nm-1 µm account for a volume fraction of at least 45%, and the content of nitrogen atoms is 0.1-10 atomic% relative to the amount of carbon atoms.