Spherical gamma nickel oxyhydroxide, preparation process and application thereof

A technology of γ-hydroxyl and nickel oxide, which is applied in nickel carbonyl, electrode manufacturing, electrical components, etc., can solve problems such as difficult self-discharge decomposition, poor battery storage performance, and low density of γ-NiOOH, achieving good crystallization state and density, Good stability and good storage performance

Inactive Publication Date: 2006-04-05
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, although spherical β-nickel oxyhydroxide (β-NiOOH) has higher filling density and discharge activity, it is easy to decompose and self-discharge, resulting in poor storage performance of the battery. For this reason, the application number is "positive electrode material" CN01116672.X The patent application for "and nickel-zinc battery" is to place β-NiOOH in a pressure kettle filled with lye, so that β-NiOOH contains alkaline cations to reduce its self-decomposition, but this method is more complicated and difficult, and red

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  • Spherical gamma nickel oxyhydroxide, preparation process and application thereof
  • Spherical gamma nickel oxyhydroxide, preparation process and application thereof
  • Spherical gamma nickel oxyhydroxide, preparation process and application thereof

Examples

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Embodiment 1

[0033] Prepare 2M nickel sulfate solution and 2M aluminum sulfate solution, mix 2M nickel sulfate solution and 2M aluminum sulfate solution to obtain solution A, the molar ratio of aluminum ion to nickel ion is 1:5; prepare 2M sodium hydroxide solution , and add 5% sodium carbonate to obtain solution B; prepare 10% ammonia solution to be solution C; solution A, B, and C are respectively placed in the high-level tank, and flow into the reactor, and the pH of the control reaction solution is 8.5 , the temperature of the reaction solution is 65°C, react for 18 hours, and stir the reaction solution; the solid-liquid mixture obtained by the reaction is subjected to conventional solid-liquid separation, the green solid is washed with distilled water, and dried at 60°C to obtain spherical α-nickel hydroxide Carry out electroless cobalt plating on the spherical α nickel hydroxide surface, and its cobalt content is 5% of spherical α nickel hydroxide; The spherical α nickel hydroxide obt...

Embodiment 2

[0036] Prepare 5M nickel nitrate solution and 5M manganese nitrate solution, mix 5M nickel nitrate solution and 5M manganese nitrate solution to obtain solution A, the molar ratio of manganese ions to nickel ions is 1:2; prepare 5M sodium hydroxide solution , and add 5% sodium carbonate to obtain solution B; prepare 20% ammonia solution to be solution C; solutions A, B, and C are respectively placed in the high-level tank, and flow into the reactor, and the pH of the control reaction solution is 9.5 , the temperature of the reaction solution is 60°C, react for 24 hours, and stir the reaction solution; the solid-liquid mixture obtained by the reaction is subjected to conventional solid-liquid separation, the green solid is washed with distilled water, and dried at 60°C to obtain spherical α-nickel hydroxide ; The obtained spherical α-nickel hydroxide was reacted with 2 times the amount of sodium persulfate in 2M potassium hydroxide solution, the temperature was 40°C, the time wa...

Embodiment 3

[0038]Prepare 1M nickel chloride solution and 1M cobalt chloride solution, mix 1M nickel chloride solution and 1M cobalt chloride solution to obtain solution A, the molar ratio of cobalt ion to nickel ion is 1:4; prepare 3M Sodium hydroxide solution and 5% sodium carbonate were added to obtain solution B; 15% ammonia solution was prepared as solution C; solutions A, B, and C were respectively placed in the high-level tank and flowed into the reactor to control the reaction solution. The pH of the solution is 9, the temperature of the reaction solution is 55°C, react for 36 hours, and stir the reaction solution; the solid-liquid mixture obtained by the reaction is subjected to conventional solid-liquid separation, the green solid is washed with distilled water, and dried at 80°C to obtain a spherical α-nickel hydroxide; the surface of spherical α-nickel hydroxide is electroless nickel-plated, and its nickel content is 6% of that of spherical α-nickel hydroxide; the spherical α-n...

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Abstract

Disclosed a compound ball ª† hydroxyl nickel oxide, its preparing method and application, relates to a compound and a anode material of battery, while the compound has the advantages of better storage ability, high discharge capacity and high packaging density. Wherein, the chemical formula of said compound is ª†-HaKbNac(H2O)dNixM1-XO2 and the method comprises that mixing the nickel salt solution and at least one metal salt solution to attain the solution A; preparing caustic soda or caustic potash solution and adding sodium carbonate or potassium carbonate to attain the solution B; preparing the ammonia solution C; reacting the A, B, and C, processing the solid-liquid separation to attain the ball ª‡ nickel hydroxide; reacting with the oxidant in the solution of caustic soda or caustic potash to attain the black solid-liquid mixture and processing the solid-liquid separation to attain the ball ª† hydroxyl nickel oxide. The invention has better stability which avoids the easy discharge decompounded in lye; therefore, the invention can be used as anode material of battery to attain better storage ability, high discharge capacity, better crystal condition and density while the tap density can reach 1.9 g/cm3.

Description

technical field [0001] The invention relates to a compound and a battery positive electrode material, in particular to a compound which can be used as a novel battery positive electrode material and a preparation method thereof. Background technique [0002] The continuous development of portable electronic products also puts forward new requirements for the batteries used in them. In particular, the ever-emerging and popular digital products put forward higher requirements for batteries. For example, when digital cameras first came out, most models used alkaline manganese batteries, but when alkaline manganese batteries were used in digital cameras that required high-power discharge, the discharge voltage would drop sharply, and only about 10% of the capacity would be used. can not work. As a result, the batteries used in digital cameras are transferred from alkaline manganese batteries to nickel-metal hydride rechargeable batteries and lithium-ion rechargeable batteries....

Claims

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Application Information

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IPC IPC(8): H01M4/48H01M4/50H01M4/04C01G53/02H01M4/52
CPCY02E60/12Y02E60/10
Inventor 廖代伟符显珠李俊林敬东卢成慧
Owner XIAMEN UNIV
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