Carbon-sulfur double doped electrode material and preparation method thereof

A technology of electrode material and sulfur bilayer, which is applied in the manufacture of hybrid/electric double-layer capacitors, electrodes of hybrid capacitors, etc. Simple preparation process and easy-to-obtain results

Inactive Publication Date: 2019-07-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of existing supercapacitors, especially pseudocapacitor supercapacitor electrode materials with large internal resistance, poor magnification, short service life, high cost, complicated preparation process and difficulty in large-scale production, and provide a carbon A novel nickel-cobalt double hydroxide electrode material doped with sulfur and a preparation method thereof; and a carbon-sulfur double-doped nickel-cobalt double hydroxide electrode material with high energy density and high power is provided. density supercapacitor

Method used

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  • Carbon-sulfur double doped electrode material and preparation method thereof

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Experimental program
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Embodiment 1

[0048] Weigh 0.1127g of nickel nitrate and 0.0371g of cobalt nitrate, add 50ml of deionized water and stir until completely dissolved to form a homogeneous solution; weigh 0.3825g of thiourea and 0.0198g of glucose and add to the above solution and stir until completely dissolved to form a homogeneous solution; Cut the cloth into a rectangle of 1 cm×1.5 cm, and ultrasonically clean it with hydrochloric acid, acetone, deionized water, and alcohol for 10 min each.

[0049] Constant voltage cathodic electrochemical deposition was used, and the cut and cleaned carbon cloth was used as the conductive substrate. The deposition voltage was -1.5V, Ag / AgCl was used as the reference electrode, and the Pt electrode was used as the counter electrode. The deposition temperature was 20°C. The time is 1200 seconds; a carbon-sulfur double-doped nickel-cobalt double hydroxide electrode material is obtained.

[0050] Take out the deposited nickel-cobalt double hydroxide electrode material, wash...

Embodiment 2

[0053] Weigh 0.1127g of nickel nitrate and 0.0371g of cobalt nitrate, add 50ml of deionized water and stir until completely dissolved to form a homogeneous solution; weigh 0.3825g of thiourea and 0.0991g of glucose and add to the above solution and stir until completely dissolved to form a homogeneous solution; Nickel was cut into a rectangle of 2 cm × 1 cm, and ultrasonically cleaned with hydrochloric acid, acetone, deionized water and alcohol for 10 min each.

[0054] Using constant voltage cathodic electrochemical deposition, the cut and cleaned foamed nickel is used as the conductive substrate, the deposition voltage is -1.5V, Ag / AgCl is used as the reference electrode, and the Pt electrode is used as the counter electrode. The deposition temperature is 35°C and the deposition time is 1800 seconds; obtain the carbon-sulfur double-doped nickel-cobalt double hydroxide electrode material.

[0055] Take out the deposited nickel-cobalt double hydroxide electrode material, rinse...

Embodiment 3

[0058] Weigh 0.0905g of nickel chloride and 0.0301g of cobalt chloride, add 50ml of deionized water and stir until completely dissolved into a homogeneous solution; weigh 0.3825g of thiourea and 0.0049g of glucose into the above solution and stir until completely dissolved into a homogeneous solution; Cut the carbon paper into a rectangle of 2 cm × 1 cm, and ultrasonically clean it with hydrochloric acid, acetone, deionized water, and alcohol for 10 min each.

[0059] Constant voltage cathodic electrochemical deposition was used, and the cut and cleaned carbon paper was used as the conductive substrate. The deposition voltage was -1V, Ag / AgCl was used as the reference electrode, and the Pt electrode was used as the counter electrode. The deposition temperature was 50 °C and the deposition time was 1800 °C. Seconds, a carbon-sulfur double-doped nickel-cobalt double hydroxide electrode material is obtained.

[0060] Take out the deposited nickel-cobalt double hydroxide electrode...

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Abstract

The invention provides a carbon-sulfur double doped nickel-cobalt double hydroxide electrode material, a preparation method and a supercapacitor prepared therefrom. The electrode material comprises carbon-sulfur double doped nickel-cobalt double hydroxide electrode material. According to the preparation method, nickel salt and cobalt salt are deposited on a conductive substrate by a constant voltage cathode electrochemical deposition method. The electrode material is directly connected with the conductive substrate without adding adhesive, so the resistance is effectively reduced, and the highperformance double doped nickel-cobalt double hydroxide electrode material is obtained, which overcomes the disadvantage of poor rate performance of the traditional double hydroxide electrode material. The preparation method has the advantages of simple preparation process, low cost and short period, and is suitable for commercial application. The supercapacitor prepared with the electrode material as the positive electrode and the activated carbon as the negative electrode has good charge-discharge performance and high power density and energy density and conforms to the development trend ofsupercapacitors with both high energy density and high power density.

Description

technical field [0001] The invention relates to a supercapacitor electrode material, in particular to a carbon-sulfur double-doped nickel-cobalt double hydroxide electrode material, a preparation method thereof and a supercapacitor produced therefrom. Background technique [0002] Supercapacitors, also known as farad capacitors and gold capacitors, are a new type of electrical energy storage components; supercapacitors are generally divided into electric double layer supercapacitors and pseudocapacitor supercapacitors. Supercapacitor is a new type of component that can provide super power while providing high energy density, and has both capacitance and battery characteristics. Its long service life, strong environmental adaptability, high charge and discharge efficiency, and high energy density are the four remarkable characteristics of supercapacitors; therefore, it has become one of the hot topics of current research. Supercapacitors are composed of electrodes, electroly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/86
CPCH01G11/30H01G11/32H01G11/86Y02E60/13
Inventor 朱基亮肖邦清李众朱峻成
Owner SICHUAN UNIV
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