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Preparation method of high-capacity secondary alkaline zinc-nickel battery

A zinc-nickel battery and high-capacity technology, which is applied in the manufacture of alkaline storage batteries, alkaline storage batteries, nickel storage batteries, etc., can solve the problems of environmental hazards, low capacity, difficult nanometerization, etc., and achieve high conductivity, large specific surface area, The effect of simple preparation method

Inactive Publication Date: 2018-04-10
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because nickel hydroxide is difficult to nanometerize, its displayed capacity is far lower than its theoretical capacity, and the addition of lead and tin in this application has certain harm to the environment, and its power density and cycle performance need to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method for a high-capacity secondary alkaline zinc-nickel battery, comprising the following steps:

[0030] (1) Mix and stir nickel nitrate, BTC and solvent until the solid dissolves to obtain a mixed solution; transfer the mixed solution to a reaction kettle and seal it, and place the reaction kettle in an electric drying oven at 80°C for 6 hours. Cool to room temperature, centrifuge the reaction product, wash and dry the obtained precipitate, and prepare Ni 3 (BTC) 2 DMF precursor;

[0031] (2) Ni obtained by step (1) 3 (BTC) 2 Put the DMF precursor into the porcelain boat, put the porcelain boat in the atmosphere furnace, pass nitrogen gas into the atmosphere furnace for 0.5h, then raise the temperature to 250°C at a heating rate of 15°C / min, pre-carbonize for 10h, and treat After cooling down to room temperature with the furnace, pre-carburized Ni 3 (BTC) 2 DMF precursor;

[0032] (3) the pre-carburized Ni prepared in step (2) 3 (BTC) 2 DMF pr...

Embodiment 2

[0039] A preparation method for a high-capacity secondary alkaline zinc-nickel battery, comprising the following steps:

[0040] (1) Mix and stir nickel chloride, BTC and solvent until the solid dissolves to obtain a mixed solution; transfer the mixed solution to a reaction kettle and seal it, and place the reaction kettle in an electric drying oven at 240°C for 1 hour, and the reaction ends After cooling to room temperature, the reaction product was centrifuged, and the obtained precipitate was washed and dried to obtain Ni 3 (BTC) 2 DMF precursor;

[0041] (2) Ni obtained by step (1) 3 (BTC) 2 Put the DMF precursor into the porcelain boat, put the porcelain boat in the atmosphere furnace, pass nitrogen into the atmosphere furnace for 0.5h, then raise the temperature to 350°C at a heating rate of 15°C / min, pre-carbonize for 1h, and treat After cooling down to room temperature with the furnace, pre-carburized Ni 3 (BTC) 2 DMF precursor;

[0042] (3) the pre-carburized N...

Embodiment 3

[0049] A preparation method for a high-capacity secondary alkaline zinc-nickel battery, comprising the following steps:

[0050] (1) Mix and stir nickel sulfate, BTC and solvent until the solid dissolves to obtain a mixed solution; transfer the mixed solution to a reaction kettle and seal it, and place the reaction kettle in an electric drying oven at 110°C for 2 hours. After the reaction, Cool to room temperature, centrifuge the reaction product, wash and dry the obtained precipitate, and prepare Ni 3 (BTC) 2 DMF precursor;

[0051] (2) Ni obtained by step (1) 3 (BTC) 2 Put the DMF precursor into the porcelain boat, put the porcelain boat in the atmosphere furnace, pass nitrogen gas into the atmosphere furnace for 0.5h, then raise the temperature to 270°C at a heating rate of 15°C / min, pre-carbonize for 3h, and treat After cooling down to room temperature with the furnace, pre-carburized Ni 3 (BTC) 2 DMF precursor;

[0052] (3) the pre-carburized Ni prepared in step (2...

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PUM

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Abstract

The invention discloses a preparation method of a high-capacity secondary alkaline zinc-nickel battery. The method comprises the following steps that firstly, a Ni3(BTC)2 DMF precursor is prepared with nickel salt and BTC as raw materials; secondly, the precursor is subjected to pre-carbonization to obtain a pre-carbonized Ni3(BTC)2 DMF precursor; thirdly, pre-carbonized powder and sulfur powder are mixed and sulfurized to prepare a Ni3S2 / C composite material; a positive plate is prepared; fourthly, zinc oxide is prepared through a co-precipitation method; fifthly, zinc oxide, zinc powder andsodium phytate are mixed and ground and then mixed with polytetrafluoroethylene emulsion to prepare negative slurry, then the surface of a collector material is coated with the negative electrode slurry, drying and rolling are conducted, and a negative plate is prepared; the positive plate, a diaphragm and the negative plate are laminated together and wound into a core to be placed into a batteryshell, then an electrolyte is injected, tabs are subjected to spot welding, sealing and formation are conducted, and the secondary alkaline zinc-nickel battery is prepared. The battery prepared through the method is good in cycling stability and large in capacity.

Description

Technical field: [0001] The invention relates to the field of preparation of zinc-nickel batteries, in particular to a preparation method of high-capacity secondary alkaline zinc-nickel batteries. Background technique: [0002] Nickel-zinc battery is a new type of battery that can replace nickel-metal hydride batteries. Compared with nickel-hydrogen and nickel-cadmium batteries, it has the characteristics of high voltage and strong discharge current. It has unparalleled advantages in digital cameras, flashlights, and electric toys. The short life of the existing zinc-nickel batteries is the main problem that has restricted the development of zinc-nickel batteries for a long time. The reasons for the short life of zinc-nickel batteries are not only the defects of positive and negative electrode materials, electrolytes, diaphragms, etc., but also the structure and assembly process of the batteries. It also has a great impact on the performance of zinc-nickel batteries. Howev...

Claims

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Application Information

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IPC IPC(8): H01M10/28H01M10/30H01M4/36H01M4/58H01M4/583H01M4/62
CPCH01M4/36H01M4/5815H01M4/583H01M4/625H01M10/28H01M10/30Y02E60/10Y02P70/50
Inventor 陈东进
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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