Recently, the School of Physics of Zhengzhou University and the Zhongyuan Light Laboratory have made new progress in the field of two-dimensional electronic compounds. The research results were published in the top international journal "Journal of the American Chemical Society" under the title "BaCu, a Two-dimensional Electride with Cu Anions". Professor Wan Biao of Zhengzhou University is the first author and corresponding author of the paper, researcher Gu Huiyang of Beijing High Voltage Science Research Center is the co-corresponding author, and the School of Physics of Zhengzhou University is the first completion unit of the paper.