文献类型：期刊文献

英文题名：Highly Reversible Anode-Free Lithium Metal Batteries Enabled by Porous Organic Cages with Subnano Lithiophilic Triangular Windows

作者：Xu, Jipeng[1];Qu, Kai[2];Li, Xinrui[3];Cui, Yan[1];Li, Jingkun[1];Liu, Honglai[1,2];Lian, Cheng[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion SINANO, Suzhou 215123, Peoples R China

年份：2025

卷号：19

期号：2

起止页码：2936

外文期刊名：ACS NANO

收录：;EI(收录号：20250417753595);WOS:【SCI-EXPANDED(收录号:WOS:001393244000001)】；

基金：This work was financially supported by the Shanghai Pilot Program for Basic Research (22TQ1400100-18) and the 21C Innovation Laboratory, Con-temporary Amperex Technology Ltd. (project no. 21C-368 OP-202312). The authors thank Yingjie Wu from East China University of Science and Technology (ECUST) for the pouch cell assembly. The authors are grateful to Prof. Zhi Xu for the support with the preparation and discussion of this work.

语种：英文

外文关键词：anode-free lithiummetal battery; metal-free porousorganic cage; subnano triangular window; lithiophilicwindow; desolvation kinetics

摘要：The widespread application of anode-free lithium metal batteries (AFLMBs) is hindered by the severe dendrite growth and side reactions due to the poor reversibility of Li plating/stripping. Herein, our study introduces an ultrathin interphase layer of covalent cage 3 (CC3) for highly reversible AFLMBs. The subnano triangular windows in CC3 serve as a Li+ sieve to accelerate Li+ desolvation and transport kinetics, inhibit electrolyte decomposition, and form LiF- and Li3N-rich solid-electrolyte interphases. Moreover, the lithiophilic backbone of CC3 homogenizes Li+ distribution and deposition with mitigated dendrite growth. Thus, CC3 promotes Li plating/stripping kinetics and reversibility, achieving an ultralong stability over 8000 h of the Cu@CC3 electrode. Furthermore, practical Cu@CC3/LiFePO4 AFLMBs deliver a capacity retention (66%) over 600 cycles. This work emphasizes the effectiveness of CC3 to regulate the Li plating/stripping behavior, demonstrating the application potential of porous organic cages for enhancing the cycle life of AFLMBs.