Preparation process of phosphorus-doped biomass three-dimensional porous carbon nano electrode material for long-service-life sodium ion battery

A sodium-ion battery, three-dimensional porous technology, applied in battery electrodes, active material electrodes, nanotechnology for materials and surface science, etc., can solve the problems of high energy consumption and complicated process, and achieve improved cycle life and preparation The effect of simple process and low production cost

Active Publication Date: 2019-08-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process is complicated, consumes a lot of energy, and the silicon element in the raw material must be removed

Method used

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  • Preparation process of phosphorus-doped biomass three-dimensional porous carbon nano electrode material for long-service-life sodium ion battery
  • Preparation process of phosphorus-doped biomass three-dimensional porous carbon nano electrode material for long-service-life sodium ion battery
  • Preparation process of phosphorus-doped biomass three-dimensional porous carbon nano electrode material for long-service-life sodium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. The nut shells of biomass waste were ultrasonically cleaned with deionized water and ethanol at a frequency of 30KHz for 1 hour, dried with an infrared lamp for 3 hours, and then crushed into powder with a grinder, and passed through a 300-mesh sieve to obtain A;

[0041] 2. Weigh 1g of A, add 40ml of phosphoric acid solution with a concentration of 1mol / L to the above powder A, and use an ultrasonic machine to sonicate at a frequency of 20KHz for 10min to obtain mixture B.

[0042] 3. Transfer the mixture B to the hydrothermal induction kettle, and add carbon cloth with length, width and height of 3cm, 3cm, and 0.1cm as the induction source. Move the hydrothermal induction kettle into the hydrothermal induction heating equipment, raise the temperature from room temperature to 150°C with an induction frequency of 200KHz, and keep it warm for 20 minutes, then cool to room temperature, take out the carbon cloth, scrape off the obtained product and wash it with deionized...

Embodiment 2

[0046] 1. The egg shells of biomass waste were ultrasonically cleaned with deionized water and ethanol at a frequency of 30KHz for 1 hour, dried with an infrared lamp for 4 hours, and then crushed into powder with a pulverizer, and passed through a 400-mesh sieve to obtain A;

[0047]2. Weigh 2g of A, add 50ml of phosphoric acid solution with a concentration of 2mol / L to the above powder A, and use an ultrasonic machine to sonicate at a frequency of 30KHz for 20min to obtain mixture B.

[0048] 3. Transfer the mixture B to the hydrothermal induction kettle, and add carbon cloth with length, width and height of 3cm, 3cm, and 0.1cm as the induction source. Move the hydrothermal induction kettle into the hydrothermal induction heating equipment, raise the temperature from room temperature to 160°C with an induction frequency of 300KHz, and keep it warm for 30 minutes, then cool to room temperature, take out the carbon cloth, scrape off the obtained product and wash it with deioniz...

Embodiment 3

[0052] 1. Clean the biomass waste coffee husk with deionized water and ethanol sequentially at a frequency of 30KHz for 1 hour, dry it with an infrared lamp for 5 hours, then crush it into powder with a pulverizer, and pass it through a 500-mesh sieve to obtain A;

[0053] 2. Weigh 3g of A, add 60ml of phosphoric acid solution with a concentration of 2mol / L to the above powder A, and use an ultrasonic machine to sonicate at a frequency of 30KHz for 20min to obtain mixture B.

[0054] 3. Transfer the mixture B to the hydrothermal induction kettle, and add carbon cloth with length, width and height of 3cm, 3cm, and 0.1cm as the induction source. Move the hydrothermal induction kettle into the hydrothermal induction heating equipment, raise the temperature from room temperature to 170°C with an induction frequency of 400KHz, and keep it warm for 40 minutes, then cool to room temperature, take out the carbon cloth, scrape off the obtained product and wash it with deionized water an...

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Abstract

The invention discloses a preparation process of a phosphorus-doped biomass three-dimensional porous carbon nano electrode material for a long-service-life sodium ion battery; the preparation processcomprises the steps of sequentially carrying out ultrasonic cleaning on a biomass waste by using deionized water and ethanol, and then performing drying, and crushing into powder, and sieving to obtain a powdery A; adding a phosphoric acid solution into the powdery A, and carrying out ultrasonic-assisted mixing to obtain a mixture B; transferring the mixture B into a hydrothermal induction kettle,and adding carbon cloth as a sensing source, transferring the hydrothermal induction kettle into hydrothermal induction heating equipment for reaction, and then cooling to room temperature, taking out the carbon cloth, scraping the obtained product and carrying out cleaning and suction filtration by deionized water and ethyl alcohol, and drying to obtain C; mixing the C and the phosphorus source,calcining, cooling to room temperature, washing the obtained product with deionized water and ethyl alcohol, and centrifuging to obtain D; and activating the D to obtain the phosphorus-doped biomassthree-dimensional porous carbon nano electrode material

Description

technical field [0001] The invention belongs to the field of preparation of negative electrode materials for sodium-ion batteries, and in particular relates to a preparation process for phosphorus-doped biomass three-dimensional porous carbon nanometer electrode materials for long-life sodium-ion batteries. Background technique [0002] Lithium-ion batteries have been widely used in people's daily life. Facing the ever-increasing demand for lithium-ion batteries, the lithium mines that can be mined on the earth are facing the exhaustion of resources. From the perspective of sustainable development, it is inevitable to seek new types of batteries. Sodium and lithium are in the same main group and have similar properties. The earth abundance of sodium is more than 400 times that of lithium. Therefore, it is a general trend to develop new sodium-ion batteries. Among them, the research on anode materials for sodium-ion batteries has become a hot spot. [0003] Biomass carbon p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/587H01M10/054C01B32/15B82Y30/00
CPCB82Y30/00C01B32/15H01M4/587H01M10/054H01M2004/021H01M2004/027Y02E60/10
Inventor 黄剑锋李瑞梓钟辛子李晓艺李文斌曹丽云罗艺佳
Owner SHAANXI UNIV OF SCI & TECH
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