δ-vopo 4 Ultrathin nanosheets and their controllable preparation methods and applications
A nanosheet and ultra-thin technology, applied in the field of nanomaterials and electrochemistry, can solve problems such as high cost, low preparation efficiency, and impact on material application, and achieve the effect of easy amplification, high power, and favorable market promotion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] δ-VOPO 4 A preparation method for a nanosheet cathode material, comprising the steps of:
[0028] 1) 0.637g vanadium pentoxide (V 2 o 5 ) and 5.046g oxalic acid (C 2 h 2 o 4 ) into 30mL distilled water (V 2 o 5 The molar ratio of oxalic acid and oxalic acid is 1:16), mixed and stirred at 80°C for 10 minutes to obtain VOC 2 o 4 blue solution;
[0029] 2) Measure 85% phosphoric acid (H 3 PO 4 ) solution (0.477mL), phosphoric acid was dripped dropwise into the blue solution of step 1) gained, and stirred evenly;
[0030] 3) drying the precursor solution obtained in step 2) in a drying oven at a drying temperature of 140° C. to obtain a beige precursor powder;
[0031] 4) The precursor powder was pre-calcined at 300°C for 4 hours in an air atmosphere, and the pre-calcined product was slightly ground and then calcined at 500°C for 10 hours in an air atmosphere to finally obtain a green δ-VOPO 4 Nanosheet cathode material.
[0032] With the product δ-VOPO of the...
Embodiment 2
[0037] 1) 0.637g vanadium pentoxide (V 2 o 5 ) and 3.782g oxalic acid (C 2 h 2 o 4 ) into 30mL distilled water (V 2 o 5 The molar ratio of oxalic acid and oxalic acid is 1:12), mixed and stirred at 70°C for 10 minutes to obtain VOC 2 o 4 blue solution;
[0038] 2) Measure 85% phosphoric acid (H 3 PO 4 ) solution (0.477mL), phosphoric acid was dripped dropwise into the blue solution of step 1) gained, and stirred evenly;
[0039] 3) drying the precursor solution obtained in step 2) in a drying oven at a drying temperature of 120° C. to obtain a beige precursor powder;
[0040] 4) The precursor powder was pre-calcined at 280°C for 3 hours in an air atmosphere, and the pre-calcined product was slightly ground and then calcined at 450°C for 8 hours in an air atmosphere to finally obtain a green δ-VOPO 4 Nanosheet cathode material.
[0041] With the δ-VOPO obtained in this example 4 Taking nanosheet cathode material as an example, at 1C current density, δ-VOPO 4 The f...
Embodiment 3
[0043] 1) 0.637g vanadium pentoxide (V 2 o 5 ) and 6.303g oxalic acid (C 2 h 2 o 4 ) into 30mL distilled water (V 2 o 5 The molar ratio of oxalic acid and oxalic acid is 1:20), mixed and stirred at 90°C for 10 minutes to obtain VOC 2 o 4 blue solution;
[0044] 2) Measure the ammonium dihydrogen phosphate (NH 4 h 2 PO 4 ) solution (0.8057g NH 4 h 2 PO 4 dissolved in 10mL distilled water), the NH 4 h 2 PO 4 The solution is dripped into the blue solution obtained in step 1) and stirred evenly;
[0045] 3) drying the precursor solution obtained in step 2) in a drying oven at a drying temperature of 160° C. to obtain a beige precursor powder;
[0046] 4) The precursor powder was pre-calcined in an air atmosphere of 350°C for 6 hours, the pre-calcined product was slightly ground and then calcined in an air atmosphere of 500°C for 12 hours, and finally the green δ-VOPO was obtained 4 Nanosheet cathode material.
[0047] With the δ-VOPO obtained in this example 4 ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More