Heterogeneous Spin States in Ultrathin Nanosheets Induce Subtle Lattice Distortion to Trigger Efficient Hydrogen Evolution Y. Liu, X. Hua, C. Xiao, T. Zhou, P. Huang, Z. Guo, B. Pan, Y. Xie J. Am. Chem. Soc. DOI: 10.1021/jacs.6b00858 Mn掺杂CoSe2纳米片,使晶格发生畸变,产生更多的边沿活性位,对氢析出反应(HER)表现高的催化活性,交换电流密度为68.3 μA•cm-2.