42. K. H., X.F. Xiao, P. Du, H.B. Yang, Z.H. Shen, G.B. Jin, F.Z. Wang, F. Pan, Q.H. Zhao*, Z.R. Lou*. Facile fabrication of Mn-N doped porous carbon nanocages with enhanced oxygen reduction reaction activity, J. Alloys and Compd., 967(2023), 171819.