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Super-capacitance carbon prepared by utilizing apple trimmed scrap branches, as well as preparation method and application thereof

A technology for supercapacitors and capacitive carbons, applied in applications, hybrid capacitor electrodes, chemical instruments and methods, etc., can solve the problems of unstable raw material sources, complex preparation processes, and poor electrochemical performance of supercapacitor activated carbons, and achieve excellent electrochemical performance. performance, reduce environmental pollution, and reduce transportation costs

Active Publication Date: 2020-11-24
山西群发生物质能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current technology for preparing supercapacitor activated carbon still has the problems of unstable source of raw materials, poor electrochemical performance, complex preparation process, and high cost. Super Capacitor Carbon Preparation Technology

Method used

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  • Super-capacitance carbon prepared by utilizing apple trimmed scrap branches, as well as preparation method and application thereof
  • Super-capacitance carbon prepared by utilizing apple trimmed scrap branches, as well as preparation method and application thereof
  • Super-capacitance carbon prepared by utilizing apple trimmed scrap branches, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see figure 1 , the preparation method of the supercapacitor carbon provided by the present embodiment comprises the following steps:

[0040] 1) Apple pruning branches are crushed to 5 cm long small sections of waste branches;

[0041] 2) A small section of waste branches is added to the retort, and the condensing device and the tail gas purification and absorption device are turned on at the same time; the retort is heated to 500°C at a heating rate of 5°C / min, and kept at this temperature for 2 hours, and the condensed gas is collected during the process. Liquid and tail gas to obtain pre-carbonized products, dry distillation liquid and wood gas;

[0042] 3) After dry distillation, cool down at room temperature naturally, fully mix and grind the pre-carbonized product and activator (potassium hydroxide) at a mass ratio of 1:3 (carbon:alkali), and transfer the mixture to an activation furnace. Raise the temperature to 600°C at a heating rate of 5°C / min, and keep at t...

Embodiment 2

[0047] see figure 1 , the preparation method of the supercapacitor carbon provided by the present embodiment comprises the following steps:

[0048]1) Apple pruning branches are crushed to 3 cm long small sections of waste branches;

[0049] 2) A small section of waste branches is added to the retort, and the condensing device and the tail gas purification and absorption device are turned on at the same time. The retort is heated up to 500°C at a heating rate of 5°C / min, and kept at this temperature for 2 hours. During the process, the condensed liquid and tail gas are collected to obtain pre-carbonized products, dry distillation liquid and wood gas;

[0050] 3) After dry distillation, cool down at room temperature naturally, fully mix and grind the pre-carbonized product and activator (potassium hydroxide) at a mass ratio of 1:3 (carbon:alkali), and transfer the mixture to an activation furnace. Raise the temperature to 700°C at a heating rate of 5°C / min, and keep at this t...

Embodiment 3

[0055] see figure 1 , the preparation method of the supercapacitor carbon provided by the present embodiment comprises the following steps:

[0056] 1) Apple pruning branches are crushed to 4 cm long small sections of waste branches;

[0057] 2) A small section of waste branches is added to the retort, and the condensing device and the tail gas purification and absorption device are turned on at the same time. The retort is heated up to 500°C at a heating rate of 5°C / min, and kept at this temperature for 2 hours. During the process, the condensed liquid and tail gas are collected to obtain pre-carbonized products, dry distillation liquid and wood gas;

[0058] 3) After dry distillation, cool down at room temperature naturally, fully mix and grind the pre-carbonized product and activator (potassium hydroxide) at a mass ratio of 1:3 (carbon:alkali), and transfer the mixture to an activation furnace. Raise the temperature to 800°C at a heating rate of 5°C / min, and keep at this ...

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Abstract

The invention belongs to the technical field of wooden activated carbon and relates to super-capacitance carbon prepared by utilizing apple trimmed scrap branches and a method thereof. The method comprises the following steps: (1) breaking apple trimmed scrap branches into small pieces of scrap branches; (2) performing dry distillation and pre-carbonation on the small pieces of scrap branches to obtain a pre-carbonated product, a dry distilled solution and wood gas; (3) mixing the pre-carbonated product with an activator to obtain an activated product; (4) stirring, washing and filtering the activated product with an acidic solution to obtain a primary solid and a primary liquid, washing and filtering the primary solid with hot water to obtain a secondary solid and a secondary liquid, anddrying and grinding the secondary solid to obtain the super-capacitance carbon; and (5) mixing the primary liquid and the secondary liquid, and adjusting the pH value of the mixture with the dry-distilled solution to obtain organic liquid fertilizer. The super-capacitance carbon provides a novel and low-price raw material to development of high-performance super-capacitance carbon and provides a high-value novel approach to comprehensive development and utilization of apple trimmed scrap branches, so that the production cost can be reduced, and environmental pollution can be reduced.

Description

technical field [0001] The invention belongs to the technical field of wood activated carbon, and relates to a supercapacitor carbon prepared by pruning waste branches of apples, a preparation method and application thereof. Background technique [0002] Apple trees have to be pruned and shaped every year, which will produce a large number of discarded fruit branches. According to relevant research reports, the average annual pruning amount of each apple tree is about 12.3Kg, and the number of apple trees planted per mu is about 70. It means that each mu of apple trees will produce 896Kg of fresh weight per year, which is equivalent to 493Kg of dry weight pruned waste branches (Li Shaoyang Shaanxi apple pruned branches as a biomass renewable energy utilization research [D], Northwest Agriculture and Forestry University, 2009), so it is estimated that each year The apple tree waste branches produced by pruning will amount to millions or even tens of millions of tons. There i...

Claims

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Application Information

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IPC IPC(8): C01B32/324C01B32/348C05F11/00C05G3/00H01G11/34H01G11/44
CPCC05F11/00C05G3/00C01B32/324C01B32/348H01G11/34H01G11/44Y02E60/13
Inventor 张严磊唐志书宋忠兴赵朝阳雷莉妍
Owner 山西群发生物质能源有限公司
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