Luan, Y., Hu, R., Fang, Y., Zhu, K., Cheng, K., Yan, J., Ye, K., Wang, G. and Cao, D. (2019) “Nitrogen and Phosphorus Dual-Doped Multilayer Graphene as Universal Anode for Full Carbon-Based Lithium and Potassium Ion Capacitors”, Nano-Micro Letters, 11, p. 30. doi: 10.1007/s40820-019-0260-6.