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sodium ion capacitor battery x mn y al z o 2 @na 3 v 2 (po 4 ) 3 Composite Electrode Materials and Applications

A capacitor battery and composite electrode technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve problems such as hindering development, low electronic conductivity, and affecting electrochemical characteristics, and achieve an improved voltage platform and easy preparation , Improve the effect of real specific area

Active Publication Date: 2021-08-31
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, NVP has low electronic conductivity, which also seriously affects its electrochemical properties and hinders its further development

Method used

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  • sodium ion capacitor battery <sub>x</sub> mn <sub>y</sub> al <sub>z</sub> o <sub>2</sub> @na <sub>3</sub> v <sub>2</sub> (po <sub>4</sub> ) <sub>3</sub> Composite Electrode Materials and Applications
  • sodium ion capacitor battery <sub>x</sub> mn <sub>y</sub> al <sub>z</sub> o <sub>2</sub> @na <sub>3</sub> v <sub>2</sub> (po <sub>4</sub> ) <sub>3</sub> Composite Electrode Materials and Applications
  • sodium ion capacitor battery <sub>x</sub> mn <sub>y</sub> al <sub>z</sub> o <sub>2</sub> @na <sub>3</sub> v <sub>2</sub> (po <sub>4</sub> ) <sub>3</sub> Composite Electrode Materials and Applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add 0.0135mol manganese acetate and 0.0045mol aluminum nitrate into 450mL water to be mixed with manganese acetate-aluminum nitrate;

[0029] (2) Sodium carbonate is mixed with 450mL concentration and is the sodium carbonate solution of 0.2mol / L, and adding mass concentration is 6% ammoniacal liquor 0.6mL, obtains sodium carbonate-ammonia mixed solution after mixing;

[0030] (3) Use a peristaltic pump to drop 450mL of sodium carbonate-ammonia mixed solution into 450mL of manganese acetate-aluminum nitrate mixed solution at a speed of 100mL / min, leave it to stand after stirring evenly, discard the supernatant, and centrifuge for 3 times, The centrifugation speed is 6000r / min, each centrifugation is 10 minutes, and the sediment is retained;

[0031] (4) Put the precipitate obtained by centrifugation into a petri dish, dry at 100°C for 20 hours, and grind to obtain Mn x al y o 2 binary material;

[0032] (5) with 0.012mol sodium carbonate, with all Mn obtained in ...

Embodiment 2

[0042] (1) Add 0.012mol manganese acetate and 0.006mol aluminum nitrate into 450mL water to be mixed with manganese acetate-aluminum nitrate;

[0043] (2) Sodium carbonate is mixed with 450mL concentration and is the sodium carbonate solution of 0.2mol / L, and adding mass concentration is 5% ammoniacal liquor 0.5mL, obtains sodium carbonate-ammonia mixed solution after mixing;

[0044] (3) Use a peristaltic pump to drop 450mL of sodium carbonate-ammonia mixed solution into 450mL of manganese acetate-aluminum nitrate mixed solution at a speed of 100mL / min, leave it to stand after stirring evenly, discard the supernatant, and centrifuge for 3 times, The centrifugation speed is 6000r / min, each centrifugation is 10 minutes, and the sediment is retained;

[0045] (4) Put the precipitate obtained by centrifugation into a petri dish, dry at 100°C for 20 hours, and grind to obtain Mn x al y o 2 binary material;

[0046] (5) with 0.012mol sodium carbonate, with all Mn obtained in st...

Embodiment 3

[0056] (1) Add 0.0144mol manganese acetate and 0.0036mol aluminum nitrate into 450mL water to be mixed with manganese acetate-aluminum nitrate;

[0057] (2) Sodium carbonate is mixed with 450mL concentration and is the sodium carbonate solution of 0.2mol / L, and adding mass concentration is 8% ammoniacal liquor 0.8mL, obtains sodium carbonate-ammonia mixed solution after mixing;

[0058] (3) Use a peristaltic pump to drop 450mL of sodium carbonate-ammonia mixed solution into 450mL of manganese acetate-aluminum nitrate mixed solution at a speed of 100mL / min, leave it to stand after stirring evenly, discard the supernatant, and centrifuge for 3 times, The centrifugation speed is 6000r / min, each centrifugation is 10 minutes, and the sediment is retained;

[0059] (4) Put the precipitate obtained by centrifugation into a petri dish, dry at 100°C for 20 hours, and grind to obtain Mn x al y o 2 binary material;

[0060] (5) with 0.012mol sodium carbonate, with all Mn obtained in ...

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Abstract

The Na of a kind of sodium ion capacitor battery x mn y Al z o 2 @Na 3 V 2 (PO 4 ) 3 Composite electrode material and application, add the mixed solution of sodium carbonate-ammonia water dropwise to the mixed solution of manganese acetate-aluminum nitrate, centrifuge, keep the precipitate, dry to obtain Mn x Al y o 2 Binary material; sodium carbonate and Mn x Al y o 2 The binary materials are mixed, stirred with absolute ethanol, and ultrasonicated at room temperature to form a colloid; after the colloid is dried, it is placed in a muffle furnace for sintering to obtain Na x mn y Al z o 2 material; the Na x mn y Al z o 2 Material, Na 3 V 2 (PO 4 ) 3 Choose HNO 3 -H 2 o 2 The mixed solution is used as a solvent, multi-step microwave digestion, centrifugation, and the precipitate is retained to obtain a composite electrode material. The advantages are: the method is simple and easy to operate, and the application of this material in the sodium ion capacitor battery can effectively improve the voltage platform for charging and discharging the capacitor battery, and the energy density is also improved.

Description

technical field [0001] The invention relates to a Na ion capacitor battery x mn y al z o 2 @Na 3 V 2 (PO 4 ) 3 Composite electrode materials and applications. Background technique [0002] Currently, sodium and lithium ions have similar chemical properties and are more abundant in the Earth's crust, making sodium one of the most attractive alternatives to lithium. However, compared with lithium-ion batteries, the existing sodium-ion batteries have lower energy density, which makes the research on sodium-ion cathode materials more extensive. [0003] Due to the advantages of low cost, environmental friendliness, and excellent safety performance, multi-element metal oxide materials are widely used in the positive electrode materials of capacitor batteries, but due to the low discharge potential and poor conductivity of nickel, the price of cobalt is high and the practicability is poor, etc. reasons hinder its development. At the same time, the polyanionic compound Na...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/46H01G11/50H01G11/86
CPCH01G11/46H01G11/50H01G11/86
Inventor 蔡克迪张玉婷郎笑石李兰奚雪
Owner BOHAI UNIV