Hao Tan, Qianqian Ji, Chao Wang, Hengli Duan, Yuan Kong, Yao Wang, Sihua Feng, Liyang Lv, Fengchun Hu, Wenhua Zhang, Wangsheng Chu, Zhihu Sun, Wensheng Yan. Asymmetrical π back-donation of hetero-dicationic Mo4+–Mo6+ pairs for enhanced electrochemical nitrogen reduction [J]. Nano Research, 2022, 15 (4): 3010-3016. 10.1007/s12274-021-3934-6.