浙江大学化学系黄飞鹤团队近日研究了分子编织人工固体电解质界面。相关论文于2025年5月22日发表在《德国应用化学》杂志上。

锂金属电池（LMBs）是下一代高能量密度存储系统最有前景的候选者，但它们受到破坏性枝晶生长的影响。研究组将尖端的分子织造技术整合到人工固体电解质界面（ASEI）的制造中，以实现无枝晶和持久的LMB。具体而言，将聚合物链编织成二维（2D）平面赋予聚合物网络晶体高强度和弹性，并为锂离子传输和均匀沉积创建埃级网格。 

因此，相关的镀锂实验在5mA cm^-2的空前高电流密度下保持稳定。此外，与现有的2D材料相比，具有“编织”ASEI的全电池表现出优异的长期循环性能，在严格的测试条件下，在270次循环中实现了98%的容量保持率。

附：英文原文

Title: Molecularly woven artificial solid electrolyte interphase

Author: Tianyu Shan, Zhijin Ju, Ding Xiao, Ke Yue, Zhenxing Cui, Yifei Zhang, Xiaodong Chi, Xiulin Fan, Guangfeng Li, Tao Xinyong, Feihe Huang

Issue&Volume: 2025-05-22

Abstract: Lithium metal batteries (LMBs) are the most promising candidates for next-generation high-energy-density storage systems, but they suffer from destructive dendrite growth. Here we integrate cutting-edge molecular weaving technology into the fabrication of artificial solid electrolyte interphases (ASEI) to realize dendrite-free and long-lasting LMBs. Specifically, weaving polymer chains into a two-dimensional (2D) plane endows polymer network crystals with high strength and elasticity, and creates angstrom-level meshes for Li-ion transport and uniform deposition. As a result, related Li plating experiments remained stable at an unprecedentedly high current density of 5 mA cm2. Furthermore, full cells with “woven” ASEI exhibited superior long-term cycling performance compared to existing 2D materials, achieving a capacity retention of 98% over 270 cycles under stringent testing conditions.

DOI: 10.1002/anie.202505056

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202505056