分离器(采油)
电解质
阳极
材料科学
电化学
化学工程
金属
纳米孔
金属锂
阴极
枝晶(数学)
无机化学
纳米技术
作者
Li Sheng,Qianqian Wang,Xiang Liu,Hao Cui,Xiaolin Wang,Yulong Xu,Zhongzhong Li,Li Wang,Zhongwei Chen,Gui-Liang Xu,Jianlong Wang,Yongbing Tang,Khalil Amine,Hong Xu,Xiangming He
标识
DOI:10.1038/s41467-021-27841-0
摘要
Abstract Lithium reactivity with electrolytes leads to their continuous consumption and dendrite growth, which constitute major obstacles to harnessing the tremendous energy of lithium-metal anode in a reversible manner. Considerable attention has been focused on inhibiting dendrite via interface and electrolyte engineering, while admitting electrolyte-lithium metal reactivity as a thermodynamic inevitability. Here, we report the effective suppression of such reactivity through a nano-porous separator. Calculation assisted by diversified characterizations reveals that the separator partially desolvates Li + in confinement created by its uniform nanopores, and deactivates solvents for electrochemical reduction before Li 0 -deposition occurs. The consequence of such deactivation is realizing dendrite-free lithium-metal electrode, which even retaining its metallic lustre after long-term cycling in both Li-symmetric cell and high-voltage Li-metal battery with LiNi 0.6 Mn 0.2 Co 0.2 O 2 as cathode. The discovery that a nano-structured separator alters both bulk and interfacial behaviors of electrolytes points us toward a new direction to harness lithium-metal as the most promising anode.
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