1 Electronic Supplementary Information for Multinary PtPdNiP truncated octahedral mesoporous nanocages for enhanced methanol oxidation electrocatalysis Hongjing Wang, Songliang Liu, Hugang Zhang, Shuli Yin, You Xu, Xiaonian Li, Ziqiang Wang,* and Liang Wang* State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China. Corresponding authors’ E-mails: zqwang@zjut.edu.cn; wangliang@zjut.edu.cn Electronic Supplementary Material (ESI) for New Journal of Chemistry. This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2020