Lingjun Kong1, Chen‐Chao Xie1, Haichen Gu1, Chaopeng Wang1, Xianlong Zhou1, Jian Liu1, Zhen Zhou1, Zhao‐Yang Li1, Jian Zhu1, Xian‐He Bu2,3,1
1School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin, 300350 P. R. China
2Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, P.R. China
3Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P.R. China
Tóm tắt
AbstractHierarchical porous structures are highly desired for various applications. However, it is still challenging to obtain such materials with tunable architectures. Here, this paper reports hierarchical nanomaterials with oriented 2D pores by taking advantages of thermally instable bonds in vanadium‐based metal–organic frameworks (MOFs). High‐temperature calcination of these MOFs accompanied by the loss of coordinated water molecules and other components enables the formation of orderly slit‐like 2D pores in vanadium oxide/porous carbon nanorods (VOx/PCs). This unique combination leads to an increase of the reactive surface area. In addition, optimized VOx/PCs demonstrate high‐rate capability and ultralong cycling life for sodium storage. The assembled full cells also show high capacity and cycling stability. This report provides an effective strategy for producing MOFs‐derived composites with hierarchical porous architectures for energy storage.
