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Ni for a pulse battery x al y mn z o 2 Preparation method and application of ternary cathode material

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

Active Publication Date: 2021-07-16
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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  • Ni for a pulse battery <sub>x</sub> al <sub>y</sub> mn <sub>z</sub> o <sub>2</sub> Preparation method and application of ternary cathode material
  • Ni for a pulse battery <sub>x</sub> al <sub>y</sub> mn <sub>z</sub> o <sub>2</sub> Preparation method and application of ternary cathode material
  • Ni for a pulse battery <sub>x</sub> al <sub>y</sub> mn <sub>z</sub> o <sub>2</sub> Preparation method and application of ternary cathode material

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

Ni for a pulse battery x Al y mn z o 2 The preparation method and application of the ternary positive electrode material, nickel sulfate, aluminum nitrate, and manganese sulfate are formulated into a mixed solution of nickel sulfate-aluminum nitrate-manganese sulfate; sodium carbonate is mixed with sodium carbonate solution, ammonia water is added, and mixed evenly to obtain sodium carbonate- Ammonia water mixed solution; add sodium carbonate-ammonia water mixed solution to nickel sulfate-aluminum nitrate-manganese sulfate mixed solution, stir evenly and let it stand, discard the supernatant, centrifuge, remove the supernatant again, and put the precipitate After being put into a container, dried and ground, placed in a muffle furnace, pre-sintered at 200-300°C and sintered at a high temperature of 700-850°C, cooled with the furnace, ground and sieved to obtain a ternary cathode material. The preparation method is simple and easy to operate, and the application of the ternary cathode material in the pulse battery can effectively improve the charge and discharge voltage platform of the pulse battery, so that the pulse battery has excellent cycle 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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Patent Type & Authority Patents(China)
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