Lu Chengyi, Tian Meng, Wei Chaohui, Zhou Junhua, Rümmeli Mark H, Yang Ruizhi
College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China.
College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China; Polish Academy of Sciences, Centre of Polymer and Carbon Materials, M. Curie-Sklodowskiej 34, Zabrze 41-819, Poland; VSB-Technical University of Ostrava, Institute of Environmental Technology, Listopadu 15, Ostrava 708 33, Czech Republic.
J Colloid Interface Sci. 2023 Feb 15;632(Pt A):1-10. doi: 10.1016/j.jcis.2022.11.022. Epub 2022 Nov 11.
Lithium metal is deemed a promising anode material for the next-generation batteries with high specific energy. Unfortunately, the growth of Li dendrites and infinite volume change during cycling, caused by the "hostless" feature of metallic Li, have posed a great challenge to the commercialization of Li metal anode. The introduction of appropriate host materials for Li metal is highly desirable. In this work, a N, P dual-doped 3D carbon derived from low-cost quantitative filter paper (NPCQP) is designed and fabricated for direct using as a host for Li metal anode. The resulting NPCQP host achieves a high deposition/stripping Coulombic efficiency of above 97.5 % with a low nucleation overpotential. Moreover, the NPCQP@Li symmetric cells enable an excellent long-term cycling performance (1000 h) with an ultralow voltage hysteresis (12 mV) and stable interface behavior. When paired with the commercial LiFePO cathode, the full cell with NPCQP@Li anode displays impressive long-term cyclic stability and rate capability, outperforming the counter cell with bare Li anode. This contribution sheds light on the rational design of viable host for practical lithium metal anodes.
