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Zheng, Ze‐Lin; Wu, Ming‐Min; Zeng, Xian; Zhu, Xiao‐Wei; Luo, Dong; Chen, Xue‐Ling; Chen, Yan‐Fei; Yang, Guo‐Zhan; Bin, De‐Shan; Zhou, Xiao‐Ping; Li, Dan
Angewandte Chemie, April 8, 2024, Letnik: 136, Številka: 15Journal Article
Hollow nanoporous carbon architectures (HNCs) present significant utilitarian value for a wide variety of applications. Facile and efficient preparation of HNCs has long been pursued but still remains challenging. Herein, we for the first time demonstrate that single‐component metal–organic frameworks (MOFs) crystals, rather than the widely reported hybrid ones which necessitate tedious operations for preparation, could enable the facile and versatile syntheses of functional HNCs. By controlling the growth kinetics, the MOFs crystals (STU‐1) are readily engineered into different shapes with designated styles of crystalline inhomogeneity. A subsequent one‐step pyrolysis of these MOFs with intraparticle difference can induce a simultaneous self‐hollowing and carbonization process, thereby producing various functional HNCs including yolk‐shell polyhedrons, hollow microspheres, mesoporous architectures, and superstructures. Superior to the existing methods, this synthetic strategy relies only on the complex nature of single‐component MOFs crystals without involving tedious operations like coating, etching, or ligand exchange, making it convenient, efficient, and easy to scale up. An ultra‐stable Na‐ion battery anode is demonstrated by the HNCs with extraordinary cyclability (93 % capacity retention over 8000 cycles), highlighting a high level of functionality of the HNCs. It is for the first time found that single‐component MOFs (STU‐1) crystals with inner crystalline inhomogeneity could enable the facile and versatile syntheses of hollow nanoporous carbon architectures (HNCs) through an unexplored spontaneous hollowing mechanism. The obtain HNCs can act as a high‐capacity and ultra‐stable anode for Na‐ion batteries.
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