Lei, C., W. Zhou, Q. Feng, Y. Lei, Y. Zhang, Y. Chen, and J. Qin. “Charge Engineering of Mo2C@Defect-Rich N-Doped Carbon Nanosheets for Efficient Electrocatalytic H2 Evolution”. Nano-Micro Letters, vol. 11, June 2019, p. 45, doi:10.1007/s40820-019-0279-8.