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Preparation method of high-activity nickel positive electrode-based nickel-zinc battery

A nickel-zinc battery, a high-activity technology, applied in the field of energy storage, can solve the problems of insufficient utilization of active materials, etc., and achieve the effects of ion transmission, penetration, and large surface area

Active Publication Date: 2020-02-07
重庆新申世纪新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to overcome the problems of charge transport and insufficient utilization of active materials in the above-mentioned prior art, and provide a method for preparing a nickel-zinc battery based on a single-atom nickel positive electrode

Method used

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  • Preparation method of high-activity nickel positive electrode-based nickel-zinc battery
  • Preparation method of high-activity nickel positive electrode-based nickel-zinc battery
  • Preparation method of high-activity nickel positive electrode-based nickel-zinc battery

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Embodiment 1

[0052] This embodiment relates to a method for preparing a nickel-zinc battery based on a single-atom nickel positive electrode; comprising the following steps:

[0053] 1. Nickel electrode preparation process:

[0054] The first step is to cut the nickel foam into 0.2×1×3cm 3 , followed by ultrasonic cleaning with ethanol and deionized water (18.2 MΩcm), in order to clean the organic matter and other impurities on the nickel foam substrate, the cleaning time of each step is 15 minutes.

[0055] The second step is to activate the nickel foam. The cleaned nickel foam was placed in 2mol / L hydrochloric acid and ultrasonically treated at 30°C for 5min.

[0056] The third step is to clean the activated nickel foam. Wash the hydrochloric acid on the nickel foam with deionized water for 20 minutes. Then the cleaned nickel foam was dried in an oven at 60°C for further use.

[0057] The fourth step is to prepare Ni-NiO to prepare the precursor solution. A certain amount of H 2 C...

Embodiment 2

[0082] This embodiment relates to a method for preparing a nickel-zinc battery based on a single-atom nickel positive electrode; comprising the following steps:

[0083] 1. Nickel electrode preparation process:

[0084] The first step is to cut the nickel foam into 0.2×1×3cm 3 , followed by ultrasonic cleaning with ethanol and deionized water (18.2MΩcm). In order to clean the organic matter and other impurities on the nickel foam substrate, the cleaning time of each step is 17min.

[0085] The second step is to activate the nickel foam. The cleaned nickel foam was placed in 2.5mol / L hydrochloric acid, and ultrasonically treated at 35°C for 10min.

[0086] The third step is to clean the activated nickel foam. Wash the hydrochloric acid on the nickel foam with deionized water for 30 minutes. Then the cleaned nickel foam was dried in an oven at 60°C for further use.

[0087] The fourth step is to prepare Ni-NiO to prepare the precursor solution. A certain amount of H 2 C ...

Embodiment 3

[0111] This embodiment relates to a method for preparing a nickel-zinc battery based on a single-atom nickel positive electrode; comprising the following steps:

[0112] 1. Nickel electrode preparation process:

[0113] The first step is to cut the nickel foam into 0.2×1×3cm 3 , followed by ultrasonic cleaning with ethanol and deionized water (18.2 MΩcm). In order to clean organic matter and other impurities on the nickel foam substrate, the cleaning time for each step is 20 minutes.

[0114] The second step is to activate the nickel foam. The cleaned nickel foam was placed in 3mol / L hydrochloric acid and ultrasonically treated at 40°C for 15min.

[0115] The third step is to clean the activated nickel foam. Wash the hydrochloric acid on the nickel foam with deionized water for 40 minutes. Then the cleaned nickel foam was dried in an oven at 65°C for later use.

[0116] The fourth step is to prepare Ni-NiO to prepare the precursor solution. A certain amount of H 2 C 2 ...

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Abstract

The invention discloses a preparation method of a high-activity nickel positive electrode-based nickel-zinc battery. The preparation method comprises the steps of placing Ni-NiO heterostructure nanometer foamed nickel in a hybrid suspension liquid of nickel chloride and graphene oxide for freezing and drying, performing thermal processing under a hybrid gas of NH3 and Ar to prepare a single atom Ni-graphene modified Ni-NiO heterostructure nanosheet nickel electrode; and taking the nickel electrode as a positive electrode and a zinc electrode as a negative electrode, making the two electrodes separated by a PE-PP diaphragm, filing an electrolyte between the two electrodes, and performing assembly to obtain the nickel-zinc battery. An active material is directly grown on a foamed nickel substrate, and full contact is ensured; moreover, a reaction site is provided by introduction of single atom nickel, the electrode conductivity is improved, and ion transmission is facilitated; and the single atom Ni-graphene modified Ni-NiO heterostructure nanosheet nickel positive electrode is combined with the modified foamed zinc electrode, and stable cycle property is achieved.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and relates to a preparation method of a nickel-zinc battery based on a highly active nickel positive electrode. Background technique [0002] The zinc-nickel battery consists of a zinc negative electrode and a nickel positive electrode. It is a new type of high-performance secondary power battery. [0003] The basic working principle is: [0004] The zinc negative electrode reaction during discharge is: [0005] [0006] [0007] Nickel positive reaction is: [0008] NiOOH+H 2 O+e – →Ni(OH) 2 +OH – [0009] Zinc-nickel batteries have high working voltage, high energy density, high power density, wide working temperature, no memory effect, no pollution during production and use, and are truly "green batteries". Moreover, zinc reserves are abundant and the cost is low. Zinc-nickel batteries have become a more cost-effective and practical new green battery system after lead-ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/32H01M4/38H01M10/28H01M10/30
CPCH01M10/30H01M4/38H01M10/28H01M4/32H01M2004/028Y02P70/50
Inventor 钟澄刘晓瑞胡文彬
Owner 重庆新申世纪新材料科技有限公司
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