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Method for preparing hard carbon material from biomass waste physalis pubescens leaves, and sodium ion battery

A sodium-ion battery and waste mushroom technology, which is applied in non-aqueous electrolyte storage batteries, electrolyte storage battery manufacturing, secondary batteries, etc. The effect of saving resources and realizing commercialization prospects

Inactive Publication Date: 2021-10-26
徐州浩华能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a kind of biomass-derived hard carbon material used as the negative electrode material of sodium ion battery, and provides a kind of simple operation, the preparation method of low-cost biomass-derived hard carbon negative electrode material, solves The existing hard carbon negative electrode materials have low initial efficiency and low specific capacity

Method used

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  • Method for preparing hard carbon material from biomass waste physalis pubescens leaves, and sodium ion battery
  • Method for preparing hard carbon material from biomass waste physalis pubescens leaves, and sodium ion battery
  • Method for preparing hard carbon material from biomass waste physalis pubescens leaves, and sodium ion battery

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Embodiment 1

[0026] A preparation method of a hard carbon material derived from biomass waste mushroom leaves, comprising the following steps:

[0027] (1) The leaves of Guniang fruit were washed several times with deionized water and then dried in an air-blast drying oven at 80 °C for 12 h;

[0028] (2) Soak the material in step (1) in a 1 mol / L hydrochloric acid solution for 24 h;

[0029] (3) The material in step (2) is washed repeatedly with deionized water until neutral;

[0030] (4) Under an argon atmosphere, raise the material in step (3) to 1400 °C at a heating rate of 5 °C / min in a tube furnace, keep it warm for 2 hours, and then lower it to room temperature; take it out and grind it into powder, Obtain the sodium ion battery hard carbon negative electrode material, marked as HC-1400.

[0031] See attached figure 1 , is the SEM image of the biomass hard carbon material prepared in this example. It can be seen that the material shows the morphology of porous channels, which is c...

Embodiment 2

[0034] A preparation method of a hard carbon material derived from biomass waste mushroom leaves, comprising the following steps:

[0035] (1) The leaves of Guniang fruit were washed several times with deionized water and then dried in an air-blast drying oven at 80 °C for 12 h;

[0036] (2) Soak the material in step (1) in a 1 mol / L hydrochloric acid solution for 24 h;

[0037] (3) The material in step (2) is washed repeatedly with deionized water until neutral;

[0038] (4) Under an argon atmosphere, raise the material in step (3) to 1200 °C in a tube furnace at a rate of 5 °C / min, keep it warm for 2 h, and then lower it to room temperature; take it out and grind it into powder , to obtain a hard carbon negative electrode material for sodium ion batteries, marked as HC-1200.

Embodiment 3

[0040] A preparation method of a hard carbon material derived from biomass waste mushroom leaves, comprising the following steps:

[0041] (1) The leaves of Guniang fruit were washed several times with deionized water and then dried in an air-blast drying oven at 80 °C for 12 h;

[0042] (2) Soak the material in step (1) in a 1 mol / L hydrochloric acid solution for 24 h;

[0043] (3) The material in step (2) was washed with deionized water several times until neutral, and then dried in a blast drying oven at 80 °C for 12 h;

[0044] (4) Under an argon atmosphere, raise the material in step (3) to 1600 °C in a tube furnace at a rate of 5 °C / min, keep it warm for 2 h, and then lower it to room temperature; take it out and grind it into powder , to obtain a hard carbon negative electrode material for sodium ion batteries, marked as HC-1600.

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Abstract

The invention discloses a method for preparing a hard carbon material from biomass waste physalis pubescens leaves, and a sodium ion battery. The physalis pubescens leaves are wide in source and are often discarded in quantity, so that the physalis pubescens leaves are used as precursors, resources can be effectively saved, environmental pollution can be avoided, and the purpose of turning waste into wealth is achieved. The hard carbon material prepared from biomass waste physalis pubescens leaves shows relatively high first-week coulombic efficiency and good cycling stability, and is an excellent sodium ion battery negative electrode material. The biomass derived hard carbon material is used as the negative electrode of the sodium-ion battery, so that the cost of the battery can be greatly reduced, and the commercialization prospect of the sodium-ion battery is more favorably realized.

Description

technical field [0001] The field of the present invention is the technical field of sodium ion battery energy storage, in particular, it relates to a biomass-derived hard carbon negative electrode material for sodium-ion batteries, and further relates to the preparation of a biomass waste-derived hard carbon material Methods and sodium-ion batteries using the biomass-derived hard carbon material as the negative electrode. Background technique [0002] Due to the global climate change problem caused by the widespread use of fossil fuels, human beings have made great efforts to find new energy storage technologies. Among the existing, highly efficient energy storage devices, secondary batteries are considered as storage systems with high energy density, making them ideal for portable electronic devices, hybrid vehicles, and large industrial equipment. Lithium-ion batteries are the most common rechargeable batteries on the market today, meeting today's energy needs and ensurin...

Claims

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Application Information

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IPC IPC(8): C01B32/05H01M4/1393H01M4/587H01M10/054H01M10/058
CPCC01B32/05H01M4/587H01M10/054H01M10/058H01M4/1393Y02P70/50Y02E60/10
Inventor 刘浩
Owner 徐州浩华能源科技有限公司
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