Liu, F., Chen, Z., Fang, G., Wang, Z., Cai, Y., Tang, B., Zhou, J. and Liang, S. (2019) “V2O5 Nanospheres with Mixed Vanadium Valences as High Electrochemically Active Aqueous Zinc-Ion Battery Cathode”, Nano-Micro Letters, 11, p. 25. doi: 10.1007/s40820-019-0256-2.