Ordered lithiophilic Crown Ether Sites in a 2D Coordination Network for Dendrite-Free Lithium Deposition

Open AccessCCS ChemistryRESEARCH ARTICLES30 Dec 2024Ordered lithiophilic Crown Ether Sites in a 2D Coordination Network for Dendrite-Free Lithium Deposition Runhao Zhang, Zhonghang Chen, Jialong Jiang, Xuelong Liao, Jiachen Guo, Wenhao Huang, Jingwei Liu, Shifa Dang, Jun Xu, Huang Wang, Zhen Zhou, Kai Zhang, Peng Cheng and Wei Shi Runhao Zhang , Zhonghang Chen , Jialong Jiang , Xuelong Liao , Jiachen Guo , Wenhao Huang , Jingwei Liu , Shifa Dang , Jun Xu , Huang Wang , Zhen Zhou , Kai Zhang , Peng Cheng and Wei Shi https://doi.org/10.31635/ccschem.024.202405325 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Fabricating interfacial layers with high lithiophilicity and rapid Li+ transfer function is critical for dendrite-free lithium deposition in lithium-metal batteries (LMBs). Herein, a two-dimensional coordination network NKU-2000 with ordered lithiophilic crown ether sites is applied as an interfacial layer to protect lithium metal anode. The Li||Li symmetrical cells with NKU-2000-based interfacial layer exhibit an ultra-long cycle of 8500 hours at 1 mA cm-2, and can stably cycle for 1700 hours under severe state of 10 mA cm-2 and 10 mAh cm-2. The corresponding LiFePO4 full cell achieves a long lifespan of 2000 cycles at 1 C with a capacity retention rate of 81.8%. A molecular-level mechanism study reveals that the lithiophilic crown ether sites reduce the Li+ desolvation energy barrier, and the crown ether-based channels promote Li+ transfer kinetics. This work provides a facile coordination assembly approach of arranging uniformly distributed lithiophilic sites in efficient Li+ transfer channels of an interfacial layer for achieving dendrite-free lithium deposition in high-performance LMBs. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentNot Yet AssignedSupporting Information Copyright & Permissions© 2024 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...