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Polymer Stabilized Droplet Templating towards Tunable Hierarchical Porosity in Single Crystalline Na 3 V 2 (PO 4 ) 3 for Enhanced Sodium‐Ion Storage
Author(s) -
Xiong Hailong,
Sun Ge,
Liu Zhilin,
Zhang Ling,
Li Lin,
Zhang Wei,
Du Fei,
Qiao ZhenAn
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202100954
Abstract Na 3 V 2 (PO 4 ) 3 (NVP) is regarded as a potential cathode material for sodium‐ion batteries, whereas, its performance is usually limited by inherent low electronic conductivity and dense bulk structure. Herein, we develop a facile polymer stabilized droplet template strategy to synthesize porous single crystal structured NVP. The pore structures (macrostructures, hierarchically meso/macrostructures, and mesostructures), pore sizes (5–2000 nm), and specific surface areas (26–158 m 2 g −1 ) of the samples can be readily controlled by tuning the sizes of droplet templates. The resultant hierarchically meso/macropores NVP demonstrates superior sodium storage performances, because its porous single crystal structure owns solid–liquid Na + transmission mode, shortens ion diffusion distance and provides large electrode–electrolyte contact area, greatly facilitating fast ionic transport. We believe the presented method will supply a novel avenue to prepare porous single crystal structured materials for anticipative applications.