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Organic nano carbon source inducing 3D silica nanoparticles-graphene nanosheet layer on Cu current collector for high-performance anode-free lithium metal batteries
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2024-06-06 , DOI: 10.1016/j.jcis.2024.06.043 Shukai Ding 1 , Zejian Fang 2 , Le Zhang 2 , Hang Li 2 , Bin Han 1 , Dongfeng Sun 1 , Wenqi Zhao 1 , Qingmei Su 1 , Gaohui Du 1 , Bingshe Xu 3
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2024-06-06 , DOI: 10.1016/j.jcis.2024.06.043 Shukai Ding 1 , Zejian Fang 2 , Le Zhang 2 , Hang Li 2 , Bin Han 1 , Dongfeng Sun 1 , Wenqi Zhao 1 , Qingmei Su 1 , Gaohui Du 1 , Bingshe Xu 3
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Anode-free lithium metal batteries (AFLBs) have attracted considerable attention due to their high theoretical specific capacity and absence of Li. However, the heterogeneous Li deposition and stripping on the lithiophobic Cu collector hamper AFLBs in practice. To achieve a uniform and reversible Li deposition, a carbon-based layer on the Cu collector has attracted intense interest due to its high conductivity. However, the 2D single-component carbon-based interface is inadequate lithiophilic for obtaining the homogeneous Li deposition and preventing the lithium dendrite from piercing the separator. Herein, we present a 3D embedded lithiophilic SiO nanoparticles-graphene nanosheet matrix (SiO@G-M) on the Cu collector by organic nano carbon source. In this structure, the lithiophilic SiO nanoparticles as active points promote the homogeneous lithium nucleation and the 3D graphene nanosheet matrix offers homogenous electron distribution and voids to prevent the piercing. Finally, SiO@G-M/Li cell shows a high coulombic efficiency of 98.62 % after 100 cycles at a high current density of 2 mA cm with an areal capacity of 1 mAh cm.
中文翻译：
有机纳米碳源在铜集流体上诱导3D二氧化硅纳米粒子-石墨烯纳米片层用于高性能无阳极锂金属电池
无阳极锂金属电池（AFLB）由于其高理论比容量和不含锂而引起了广泛关注。然而，疏锂铜集电极上的异质锂沉积和剥离阻碍了AFLB的实际应用。为了实现均匀且可逆的锂沉积，铜集电极上的碳基层由于其高导电性而引起了人们的强烈兴趣。然而，二维单组分碳基界面的亲锂性不足以获得均匀的锂沉积并防止锂枝晶刺穿隔膜。在此，我们提出了一种通过有机纳米碳源在铜收集器上3D嵌入的亲锂SiO纳米粒子-石墨烯纳米片基质（SiO@GM）。在这种结构中，亲锂 SiO 纳米粒子作为活性点促进均匀锂成核，3D 石墨烯纳米片基质提供均匀的电子分布和空隙以防止刺穿。最后，SiO@GM/Li电池在2 mA cm的高电流密度和1 mAh cm的面积容量下循环100次后显示出98.62%的高库仑效率。
更新日期：2024-06-06
中文翻译：
有机纳米碳源在铜集流体上诱导3D二氧化硅纳米粒子-石墨烯纳米片层用于高性能无阳极锂金属电池
无阳极锂金属电池（AFLB）由于其高理论比容量和不含锂而引起了广泛关注。然而，疏锂铜集电极上的异质锂沉积和剥离阻碍了AFLB的实际应用。为了实现均匀且可逆的锂沉积，铜集电极上的碳基层由于其高导电性而引起了人们的强烈兴趣。然而，二维单组分碳基界面的亲锂性不足以获得均匀的锂沉积并防止锂枝晶刺穿隔膜。在此，我们提出了一种通过有机纳米碳源在铜收集器上3D嵌入的亲锂SiO纳米粒子-石墨烯纳米片基质（SiO@GM）。在这种结构中，亲锂 SiO 纳米粒子作为活性点促进均匀锂成核，3D 石墨烯纳米片基质提供均匀的电子分布和空隙以防止刺穿。最后，SiO@GM/Li电池在2 mA cm的高电流密度和1 mAh cm的面积容量下循环100次后显示出98.62%的高库仑效率。
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