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A Covalent Black Phosphorus/Metal–Organic Framework Hetero‐nanostructure for High‐Performance Flexible Supercapacitors
Author(s) -
Wu Tianyu,
Ma Ziyang,
He Yunya,
Wu Xingjiang,
Tang Bao,
Yu Ziyi,
Wu Guan,
Chen Su,
Bao Ningzhong
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202101648
Subject(s) - supercapacitor , materials science , capacitance , covalent bond , electrolyte , nanostructure , hybrid material , porosity , microfluidics , chemical engineering , nanotechnology , electrode , chemistry , composite material , organic chemistry , engineering
We develop hetero‐nanostructured black phosphorus/metal‐organic framework hybrids formed by P‐O‐Co covalent bonding based on a designed droplet microfluidic strategy consisting of confined and ultrafast microdroplet reactions. The resulting hybrid exhibits large capacitance (1347 F g −1 ) in KOH electrolytes due to its large specific‐surface‐area (632.47 m 2 g −1 ), well‐developed micro‐porosity (0.38 cm 3 g −1 ), and engineered electroactivity. Furthermore, the proposed 3D printing method allows to construct all‐integrated solid‐state supercapacitor, which maintains interconnected porous network, good interfacial adhesion, and robust flexibility for short‐path diffusion and excessive accommodation of ions. Consequently, the fabricated flexible supercapacitor delivers ultrahigh volumetric energy density of 109.8 mWh cm −3 , large capacitance of 506 F cm −3 , and good long‐term stability of 12000 cycles.