相间
材料科学
阳极
阴极
金属锂
电解质
金属
锂(药物)
化学工程
纳米技术
降级(电信)
联轴节(管道)
腐蚀
分层(地质)
容量损失
复合材料
图层(电子)
电极
自行车
化学浴沉积
储能
作者
Tianhui Li,Bao Zhang,Jian Gao,Hongchuan Han,Xiaolong Li,Jiaqi Wang,Xiao Huang,An Duan,Wei Sun
标识
DOI:10.1002/aenm.202505223
摘要
ABSTRACT The practical implementation of lithium metal batteries (LMBs) requires overcoming the challenges posed by unstable interphase between Li metal and electrolyte, particularly under high areal capacities. Continuous chemical corrosion and non‐uniform plating/stripping degrade the solid electrolyte interphase (SEI), causing rapid capacity loss and safety risks. Herein, we propose a molecular bridged (MB) hybrid interphase integrated with dual silane coupling agents, enabling highly reversible Li anodes at high areal capacities in carbonate‐based electrolyte. The MB layer tightly anchors Li metal by chemical bonding, prevents delamination during high‐capacity Li deposition/dissolution, and decouples parasitic reaction from Li deposition by an anti‐corrosive coupling network. Consequently, the MB‐stabilized Li anode achieves an impressive cycling for 600 h at 1 mA cm −2 , and 8 mAh cm −2 , and sustains 474 cycles at 1 C with 80% capacity retention in Li||LiFePO 4 full cell. Furthermore, an Ah‐level pouch cell with high cathode loading (NCM811, ≈ 45.9 mg cm −2 ) maintains stable cycling at low N/P ratios (≈1.87). This strategy for constructing a molecular‐bridged interphase offers a new perspective for maintaining the artificial SEI integrity under harsh conditions, demonstrating the feasibility of durable, high‐performance LMBs with reduced Li loss.
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