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Preparation method of active metal oxide-carbonized bacterial cellulose electrode material

A technology of bacterial cellulose and active metals, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors.

Active Publication Date: 2021-07-13
南京荣之盛生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems in the prior art that when the carbonized bacterial cellulose deposits metal active oxides in situ, the active materials are easy to agglomerate in the three-dimensional space structure, thereby inhibiting the electrochemical activity of the composite material, etc., the present invention provides an active metal oxide- Preparation method of carbonized bacterial cellulose electrode material

Method used

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  • Preparation method of active metal oxide-carbonized bacterial cellulose electrode material
  • Preparation method of active metal oxide-carbonized bacterial cellulose electrode material
  • Preparation method of active metal oxide-carbonized bacterial cellulose electrode material

Examples

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Effect test

Embodiment 1

[0028] In step 1, the surface of the carbonized bacterial cellulose fiber is oxidized by a constant potential anodic oxidation method, and the oxidation potential and oxidation time are 2V and 300s, respectively, to obtain a hydrophilic flexible carbonized bacterial cellulose material.

[0029] Step 2, soaking the hydrophilic flexible carbonized bacterial cellulose material in 0.02M nickel nitrate solution for 2 hours, and then volatilizing ethanol at 60° C. to obtain the nickel nitrate-carbonized bacterial cellulose material.

[0030] Step 3, cover the flexible nickel nitrate-carbonized bacterial cellulose membrane material in a closed ammonia beaker, and make ammonia gas permeate the nickel nitrate-carbonized bacterial cellulose membrane at 110°C, ammonia gas and carbonized bacterial cellulose fiber Nickel nitrate on the surface reacts to obtain a flexible nickel oxide-carbonized bacterial cellulose material.

Embodiment 2

[0032] In step 1, the surface of the carbonized bacterial cellulose fiber is oxidized by a constant potential anodic oxidation method, and the oxidation potential and oxidation time are 5V and 100s, respectively, to obtain a hydrophilic flexible carbonized bacterial cellulose material.

[0033] Step 2: Soak the hydrophilic flexible carbonized bacterial cellulose material in 0.05M nickel nitrate solution for 1 hour, and then volatilize ethanol at 60° C. to obtain nickel nitrate-carbonized bacterial cellulose material.

[0034] Step 3, cover the flexible nickel nitrate-carbonized bacterial cellulose membrane material in a closed ammonia beaker, and make ammonia gas permeate the nickel nitrate-carbonized bacterial cellulose membrane at 120°C, ammonia gas and carbonized bacterial cellulose fiber Nickel nitrate on the surface reacts to obtain a flexible nickel oxide-carbonized bacterial cellulose material.

Embodiment 3

[0036] In step 1, the surface of the carbonized bacterial cellulose fiber is oxidized by a constant potential anodic oxidation method, and the oxidation potential and oxidation time are 5V and 300s, respectively, to obtain a hydrophilic flexible carbonized bacterial cellulose material.

[0037] Step 2, soaking the hydrophilic flexible carbonized bacterial cellulose material in 0.1M nickel nitrate solution for 1 hour, and then volatilizing ethanol at 60° C. to obtain the nickel nitrate-carbonized bacterial cellulose material.

[0038] Step 3, cover the flexible nickel nitrate-carbonized bacterial cellulose membrane material in a closed ammonia beaker, and make ammonia gas permeate the nickel nitrate-carbonized bacterial cellulose membrane at 130°C, ammonia gas and carbonized bacterial cellulose fiber Nickel nitrate on the surface reacts to obtain a flexible nickel oxide-carbonized bacterial cellulose material.

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Abstract

The invention discloses a preparation method of an active metal oxide-carbonized bacterial cellulose electrode material. The method first adopts the electrochemical oxidation method to carry out surface hydrophilic treatment on the carbonized bacterial cellulose, then soaks the ethanol solution of active metal nitrate, and after the ethanol in the material is volatilized, passes through the nitrate-carbonized bacterial cellulose membrane Ammonia, light and flexible active metal oxide-carbonized bacterial cellulose membrane composites obtained by gas precipitation. In the composite material prepared by the invention, the nickel oxide has high dispersibility, can inhibit the agglomeration of active materials such as nickel oxide in the three-dimensional structure of carbonized bacterial cellulose, and is suitable for the field of supercapacitors.

Description

technical field [0001] The invention belongs to the technical field of preparation of composite materials, and relates to a preparation method of an active metal oxide-carbonized bacterial cellulose electrode material. Background technique [0002] Bacterial cellulose is a natural fiber produced by microbial fermentation. Compared with synthetic cellulose, it has many excellent physical, chemical and mechanical properties, such as biodegradability, good three-dimensional network structure, higher chemical purity and better Mechanical strength, etc., generally used in electrochemical, medical and food industries. The synthesis of bacterial cellulose only needs cheap raw materials, such as glucose, sucrose and waste biomass acid hydrolysis solution, etc., and these raw materials are renewable resources, and the microbial synthesis efficiency is much higher than artificial synthesis, which is a green preparation method. It has become a research hotspot of new biomaterials. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/46H01G11/40H01G11/26H01G11/86
CPCH01G11/26H01G11/40H01G11/46H01G11/86Y02E60/13
Inventor 孙汴京陈辰黄洋林建斌张威威韦峰
Owner 南京荣之盛生物科技有限公司
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