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Preparation method and application of NixAlyMnzO2 ternary anode material of pulse battery

A positive electrode material and battery technology, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of low nickel discharge potential, high cobalt price, poor conductivity, etc., and achieve increased reversibility, increased voltage platform, and improved cycle stability Effect

Active Publication Date: 2018-11-27
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most enterprises choose nickel, cobalt, and manganese ternary materials as the positive electrode materials of pulse batteries, but the discharge potential of nickel is low, the conductivity is poor, and the price of cobalt is relatively high and the practicability is poor.

Method used

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  • Preparation method and application of NixAlyMnzO2 ternary anode material of pulse battery
  • Preparation method and application of NixAlyMnzO2 ternary anode material of pulse battery
  • Preparation method and application of NixAlyMnzO2 ternary anode material of pulse battery

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Nickel sulfate, aluminum nitrate, manganese sulfate are mixed with the nickel sulfate-aluminum nitrate-manganese sulfate mixed solution that concentration is 0.02mol / L according to molar ratio 1:1:1;

[0022] (2) Sodium carbonate is mixed with the sodium carbonate solution that concentration is 0.1mol / L, and adds the ammoniacal liquor accounting for 5% of sodium carbonate solution quality, mixes evenly, obtains sodium carbonate-ammonia mixed solution;

[0023] (3) Add sodium carbonate-ammonia mixed solution dropwise to nickel sulfate-aluminum nitrate-manganese sulfate mixed solution with a peristaltic pump at a speed of 50mL / min, the sodium carbonate-ammonia mixed solution and nickel sulfate-aluminum nitrate-sulfuric acid The volume ratio of the manganese mixed solution is 1:1. After stirring evenly, let it stand, discard the supernatant, then centrifuge at a speed of 4000r / min for 15min, remove the supernatant again after centrifugation, and keep the precipitate;

...

Embodiment 2

[0028] (1) Nickel sulfate, aluminum nitrate, manganese sulfate are mixed with the nickel sulfate-aluminum nitrate-manganese sulfate mixed solution that concentration is 0.04mol / L according to molar ratio 1:1:1;

[0029] (2) Sodium carbonate is mixed with the sodium carbonate solution that concentration is 0.2mol / L, and adds the ammoniacal liquor accounting for 8% of sodium carbonate solution quality, mixes evenly, obtains sodium carbonate-ammonia mixed solution;

[0030] (3) Use a peristaltic pump to drop 100mL of sodium carbonate-ammonia water mixed solution into 100mL of nickel sulfate-aluminum nitrate-manganese sulfate mixed solution at a speed of 20mL / min, stir evenly and let stand, discard the supernatant, and then Centrifuge at 8000r / min for 5min, remove the supernatant again after centrifugation, and keep the sediment;

[0031] (4) Put the precipitate obtained by centrifugation into a petri dish and dry it at 130°C for 10 hours. After grinding, place it in a muffle furn...

Embodiment 3

[0035] (1) 0.01mol nickel sulfate, 0.01mol aluminum nitrate and 0.01mol manganese sulfate are dissolved in 1L water and are mixed with nickel sulfate-aluminum nitrate-manganese sulfate mixed solution that concentration is 0.03mol / L;

[0036] (2) Sodium carbonate is mixed with the sodium carbonate solution that concentration is 0.15mol / L, and adds the ammoniacal liquor accounting for 6% of sodium carbonate solution quality, mixes evenly, obtains sodium carbonate-ammonia mixed solution;

[0037] (3) Add sodium carbonate-ammonia mixed solution dropwise to nickel sulfate-aluminum nitrate-manganese sulfate mixed solution with a peristaltic pump at a speed of 30mL / min, the sodium carbonate-ammonia mixed solution and nickel sulfate-aluminum nitrate-sulfuric acid The volume ratio of the manganese mixed solution is 1:1. After stirring evenly, let it stand, discard the supernatant, then centrifuge at a speed of 5000r / min for 10min, remove the supernatant again after centrifugation, and kee...

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Abstract

The invention relates to a preparation method and application of a NixAlyMnzO2 ternary anode material of a pulse battery. The method comprises the following steps: preparing nickel sulfate, aluminiumnitrate and manganese sulfate into a nickel sulfate-aluminium nitrate-manganese sulfate mixed solution; adding ammonium hydroxide into a sodium carbonate solution and uniformly mixing, thus obtaininga sodium carbonate-ammonium hydroxide mixed solution; adding the sodium carbonate-ammonium hydroxide mixed solution into the nickel sulfate-aluminium nitrate-manganese sulfate mixed solution, uniformly stirring and then standing still; removing a supernatant, centrifuging, removing the supernatant again, putting sediment into a container, drying and grinding; putting into a muffle furnace, presintering at 200-300 DEG C and sintering under a high temperature of 700-850 DEG C, cooling together with the furnace, grinding and sieving, thus obtaining the ternary anode material. The preparation method is simple and the operation is easy. When the ternary anode material is applied to the pulse battery, a charging and discharging voltage platform of the pulse battery can be effectively lifted, sothat the pulse battery has excellent cycling stability under a high rate discharge system.

Description

technical field [0001] The invention relates to a kind of Ni for pulse battery x al y mn z o 2 Preparation method and application of ternary cathode material. Background technique [0002] Pulse battery is a new type of chemical power source that can charge and discharge quickly. Ternary materials are the hotspots of current research. Applying it to pulse batteries can increase the voltage platform, make it have a higher specific capacity, and realize high-current discharge . [0003] At present, most enterprises choose nickel, cobalt, and manganese ternary materials as the positive electrode materials of pulse batteries, but nickel has low discharge potential and poor conductivity, and cobalt is relatively expensive and poor in practicability. In order to improve the above shortcomings, nickel, aluminum, and manganese are used to prepare ternary metal oxides. On the one hand, aluminum has good electrical conductivity and metallic properties, and the doping of aluminum ...

Claims

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Application Information

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IPC IPC(8): H01M4/505
CPCH01M4/505Y02E60/10
Inventor 郎笑石葛芳李兰刘凡董纯希赵一霖盖丽艳颜勇蔡克迪
Owner BOHAI UNIV