Affiliation:
1. Department of Chemistry Northeast Normal University Changchun Jilin 130024 P. R. China
2. MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal University Changchun Jilin 130024 P. R. China
3. School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 P. R. China
Abstract
Abstract2D compounds exfoliated from weakly bonded bulk materials with van der Waals (vdW) interaction are easily accessible. However, the strong internal ionic/covalent bonding of most inorganic crystal frameworks greatly hinders 2D material exfoliation. Herein, we first proposed a radical/strain‐synergistic strategy to exfoliate non‐vdW interacting pseudo‐layered phosphate framework. Specifically, hydroxyl radicals (⋅OH) distort the covalent bond irreversibly, meanwhile, H2O molecules as solvents, further accelerating interlayered ionic bond breakage but mechanical expansion. The innovative 2D laminar NASICON‐type Na3V2(PO4)2O2F crystal, exfoliated by ⋅OH/H2O synergistic strategy, exhibits enhanced sodium‐ion storage capacity, high‐rate performance (85.7 mAh g−1 at 20 C), cyclic life (2300 cycles), and ion migration rates, compared with the bulk framework. Importantly, this chemical/physical dual driving technique realized the effective exfoliation for strongly coupled pseudo‐layered frameworks, which accelerates 2D functional material development.
Funder
National Key Research and Development Program of China
Cited by
2 articles.
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