Ethanol‐Induced Ni2+‐Intercalated Cobalt Organic Frameworks on Vanadium Pentoxide for Synergistically Enhancing the Performance of 3D‐Printed Micro‐Supercapacitors

• DOI: 10.1002/adma.202211523
• Publication Date: 2023-02-21T16:15:38Z
• Authors: Huijie Zhou; Guoyin Zhu; Shengyang Dong; Pin Liu; Yiyao Lu; Zhen Zhou; Shuai Cao; Yizhou Zhang; Huan Pang
• Keywords: Pentoxide; Nanomaterials; Specific surface area

Abstract The synthesis of metal‐organic framework (MOF) nanocomposites with high energy density and excellent mechanical strength is limited by the degree lattice matching crystal surface structure. In this study, dodecahedral ZIF‐67 synthesized uniformly on vanadium pentoxide nanowires. influence coordination mode in ethanol also investigated. Benefitting from different abilities Ni 2+ , Co N atoms, spatially separated surface‐active sites are created through metal‐ion exchange. Furthermore, incompatibility between d 8 electronic configuration three‐dimensional (3D) structure afforded hollow structures controlling amount doping. formation NiCo‐MOF@CoOOH@V 2 O 5 confirmed using X‐ray absorption fine analysis. performance obtained composite illustrated fabricating a 3D‐printed micro‐supercapacitor, exhibiting area specific capacitance 585 mF cm −2 159.23 µWh (at power = 0.34 mW ). solvent/coordination tuning strategy demonstrated study provides new direction for high‐performance nanomaterials electrochemical storage applications.