Developing cost-effective platinum group materials (PGM)-free cathode catalysts for the oxygen reduction reaction (ORR) to replace the state-of-the-art noble metal is essential for the commercialization of microbial fuel cells (MFCs). Fe-N-C catalysts are regarded as one of promising candidates...

Let \equiv(N,v) be a cooperative game with the player set N and characteristic function v: 2N -R. An imputation of the game is in the core if no subset of players could gain advantage by splitting from the grand coalition of all players. It is well known that, for the flow game (and...