VOPO4 nanosheets are successfully synthesized using a hydrothermal method followed by calcination. The XRD results reveal that obtained products are crystallized in the orthorhombic VOPO4 phase. SEM and TEM images demonstrate that VOPO4 products possess unique nanosheet morphology. Electrochemical tests show that the VOPO4 nanosheets exhibit an excellent electrochemical performance as anode materials. They can deliver an initial discharge capacity of 1356 mA h g(-1) at 0.1 C, and possess a favorable capacity at rates of 0.2, 1, and 2 C. The synthesized VOPO4 can be used as a good anode material; furthermore, the nanosheet structure can effectively improve the electrochemical performance of this material.
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http://dx.doi.org/10.1039/c4cc03781b | DOI Listing |
ACS Nano
October 2024
Sanya Science and Education Innovation Park of Wuhan University of Technology, Sanya 572000, P. R. China.
Polyanion phosphates exhibit great potential as calcium-ion battery (CIB) cathodes, boasting high working voltage and rapid ion diffusion. Nevertheless, they frequently suffer from capacity decay with irreversible phase transitions; the underlying mechanisms remain elusive. Herein, we report an adaptively layerized structure evolution from discrete NaVO(PO)F nanoparticles (NPs) to interconnected VOPO nanosheets (NSs), triggered by electrochemical (de)calcification, leading to an improvement in Ca storage performance.
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November 2024
School of Physics and Physical Engineering, Qufu Normal University, Qufu, 273165, China.
Extending the layer spacing of the (001) planes to regulate the mobility of Zn is widely adopted to optimize the performance of VOPO·2HO cathode for zinc-ion batteries. However, the unique function originating from other planes is often neglected. Herein, an effective in situ conversion methodology is proposed for the synthesis of the (200) oriented growth of vertical VOPO·2HO nanosheets with oxygen vacancies (V-VOPO).
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May 2023
Department of Materials Science, Fudan University, Shanghai, 200433, China.
Al ion batteries (AIBs) are attracting considerable attention owing to high volumetric capacity, low cost, and high safety. However, the strong electrostatic interaction between Al and host lattice leads to discontented cycling life and inferior rate capability. Herein, a new strategy of employing water molecules contained VOPO ·H O to boost Al migration via the charge shielding effect of water is reported.
View Article and Find Full Text PDFJ Colloid Interface Sci
March 2021
School of Materials Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, Shandong 266100, PR China. Electronic address:
The search for earth-abundant water oxidation electrocatalysts with low-cost and high-performance is essential to the energy conversion field. Well defined, rational designed two-dimensional materials have attracted enormous interest in light of much more specific surface areas and unique electronic properties. Herein, we report a facile two-phase solvothermal approach for the synthesis of Fe doped amorphous single-layered (~0.
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October 2020
Sichuan Research Center of New Materials, Institute of Chemical Materials, China Academy of Engineering Physics, Chengdu, 610200, China.
Antimony is an attractive anode material for sodium-ion batteries (SIBs) owing to its high theoretical capacity and appropriate sodiation potential. However, its practical application is severely impeded by its poor cycling stability caused by dramatic volumetric variations during sodium uptake and release processes. Here, to circumvent this obstacle, Sb@C@TiO triple-shell nanoboxes (TSNBs) are synthesized through a template-engaged galvanic replacement approach.
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