阳极
材料科学
法拉第效率
过电位
阴极
锂(药物)
碳纤维
成核
金属锂
纳米技术
化学工程
复合材料
化学
电化学
电极
内分泌学
物理化学
工程类
有机化学
复合数
医学
作者
Chengyi Lu,Meng Tian,Chaohui Wei,Junhua Zhou,Mark H Rümmeli,Ruizhi Yang
标识
DOI:10.1016/j.jcis.2022.11.022
摘要
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 LiFePO4 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.
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