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Modification method of copper ion implanted zinc battery positive electrode material delta-manganese dioxide

A manganese dioxide, cathode material technology, applied in battery electrodes, manganese oxide/hydroxide, circuits, etc., can solve the problems of flammability, toxicity of batteries, large consumption of lithium resources, etc. The effect of the volume effect

Active Publication Date: 2022-04-12
NORTHWEST UNIV(CN)
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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 that traditional lithium-ion batteries are toxic, flammable, and require anhydrous operating environment and lithium resource consumption, and provide a copper ion-implanted zinc battery cathode material δ-manganese dioxide Modification method

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  • Modification method of copper ion implanted zinc battery positive electrode material delta-manganese dioxide
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  • Modification method of copper ion implanted zinc battery positive electrode material delta-manganese dioxide

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specific Embodiment approach 1

[0026] Embodiment 1: In this embodiment, a method for modifying copper ion-implanted zinc battery anode material δ-manganese dioxide is completed according to the following steps:

[0027] 1. Preparation of δ-manganese dioxide powder:

[0028] ①. First, dissolve potassium permanganate in deionized water, then magnetically stir, then drop in hydrochloric acid, and stir evenly to obtain a mixed solution;

[0029] ②. Transfer the mixed solution to an autoclave, then raise the temperature of the autoclave to 130°C to 150°C, and then conduct a hydrothermal reaction at 130°C to 150°C to obtain a precipitated substance;

[0030] ③. First, use deionized water as the cleaning agent to centrifugally clean the precipitated material for 3 to 5 times, then use absolute ethanol as the cleaning agent to perform centrifugal cleaning on the precipitated material for 3 to 5 times, and finally vacuum-dry and cool to room temperature naturally , to obtain δ-manganese dioxide powder;

[0031] 2....

specific Embodiment approach 2

[0036] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the volume ratio of the amount of the substance of potassium permanganate described in step one 1. and deionized water is 1.25mmol:34mL; The above magnetic stirring time is 10min-20min. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the concentration of hydrochloric acid described in step one 1. is 5mmol / L; The volume ratio of hydrochloric acid and deionized water described in step one 1. It is 0.416mL:34mL. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a modification method of a copper ion implanted zinc battery positive electrode material delta-manganese dioxide, and relates to a preparation method of a battery positive electrode material. The invention aims to solve the problems that the traditional lithium ion battery is toxic and inflammable, needs a water-free operation environment and consumes a large amount of lithium resources. The method comprises the following steps: 1, preparing delta-manganese dioxide powder; 2, preparing viscous electrode slurry; and 3, copper ion implantation. Compared with the performance of an aqueous zinc ion battery assembled by a delta-manganese dioxide-loaded electrode plate without copper ion implantation, the performance of the aqueous zinc ion battery assembled by the copper ion-implanted delta-manganese dioxide electrode plate prepared by the invention has the high specific capacity of 519.4 mAhg <-1 > at 0.1 Ag <-1 >, and the specific capacity of the aqueous zinc ion battery assembled by the copper ion-implanted delta-manganese dioxide electrode plate is 519.4 mAhg <-1 > at 0.1 Ag <-1 >. And the capacity of an aqueous zinc ion battery assembled by the electrode plate loaded with the delta-manganese dioxide is only 209.7 mAhg <-1 > under the same current density.

Description

technical field [0001] The invention relates to a preparation method of battery cathode materials. Background technique [0002] Energy and the environment are two major issues that must be addressed by human survival and social development today. With the rapid development of science and technology, the rapid consumption of energy, but fossil energy such as coal and oil are not inexhaustible. At the same time, the climate The environment and the environment are also deteriorating day by day, which is contrary to the green and healthy life pursued by human beings, so the development of renewable energy such as solar energy and wind energy has become a global trend. However, these renewable natural energy sources cannot be widely used in daily life due to the influence of uncontrollable factors such as weather and geography. Therefore, the application of energy storage devices is crucial to overcome these challenges. Lithium-ion batteries, which are currently widely used, de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02H01M4/505
CPCY02E60/10Y02P20/133
Inventor 冯宏剑马淑敏王贝贝王同贤郑啸松
Owner NORTHWEST UNIV(CN)
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