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Method for reducing metal dendrites in manganese electrodeposition

A metal dendrite and manganese electrodeposition technology, which is applied in the direction of electrolytic components, electrolytic process, instruments, etc., can solve the problems of insignificant inhibition of cathode dendrite growth and dissolution of metal manganese on the surface of the plate, so as to improve the deposition morphology, Effect of reducing metal dendrite formation and homogenizing current density

Active Publication Date: 2021-09-28
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results show that the inhibition effect of electrode materials and additives on cathode dendrite growth is not obvious
When the applied current changes from direct current to pulse current, the reverse pulse current will promote the dissolution of dendrites at the edge of the cathode, but at the same time there is a problem of dissolving the metal manganese on the surface of the plate.

Method used

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  • Method for reducing metal dendrites in manganese electrodeposition
  • Method for reducing metal dendrites in manganese electrodeposition
  • Method for reducing metal dendrites in manganese electrodeposition

Examples

Experimental program
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Effect test

Embodiment 1

[0031] See Figure 1 to 9 , A method of reducing metal dendrites in manganese electrodeposition, the electrolysis device employed mainly includes a DC power source, a circuit system, an electrode, and an electrolytic cell;

[0032] The circuit system is a chaotic circuit, wherein the chaotic circuit module mainly includes a linear capacitor, a linear resistance, an operational amplifier, a diode;

[0033] The op amp and capacitance of chaotic circuits constitute a reverse integral circuit.

[0034] The chaotic circuit can output a stable hyperlotic signal, by adjusting the resistance of the resistor, the chaotic circuit can cause a periodic state, a quasi-cycle state, a chaotic state, or a super chaotic state.

[0035] The circuit structure of the circuit system is as follows:

[0036] The VS + terminal of the analog multiplier U6 is connected to one end of the DC power supply positive, and the VS-terminal is connected to the DC power supply negative electrode;

[0037] The z termi...

Embodiment 2

[0086] A device for reducing metal dendrites in manganese electrodeposition, including DC power, circuitry, electrode, and electrolytic cells;

[0087] The DC power supply is a circuit system power supply;

[0088] The circuit system transmits an excitation signal to the electrode;

[0089] The circuit structure of the circuit system is as follows:

[0090] The VS + terminal of the analog multiplier U6 is connected to one end of the DC power supply positive, and the VS-terminal is connected to the DC power supply negative electrode;

[0091] The z terminal, X2 terminal, Y1 terminal, and Y2 terminals of the multiplier U6;

[0092] The X1 terminal of the simulated multiplier U6 receives the signal of the operational amplifier L1;

[0093] The Y1 terminal of the simulation of the multiplier U6 receives the signal of the operational amplifier L7 feedback;

[0094] The simulated multiplier U6 is multiplied by the signal received, resulting in multiplied signals;

[0095] The W terminal...

Embodiment 3

[0139] Reduce the use of metal dendrite devices in manganese electrodeposition is as follows:

[0140] Building an electrolysis device, including DC power, circuitry, electrode, and electrolytic cells;

[0141] Preparation of manganese salt solution: acid leaching treatment to manganese ore, to obtain a leaching liquid; add MNO in the leaching liquid 2 , Ammonia water, SDD (dimethyl dithiocarbamate), remove impurities in the leaching liquid; the pH value of the ammonia is in the range of [6, 7]; add activated carbon to the leaching liquid after impurities, stand T time To obtain a manganese salt solution.

[0142] Pour the prepared manganese salt solution in the electrolytic cell;

[0143] The electrode is partially or all in the formation of manganese salt;

[0144] Turn on the DC power supply to power the DC system;

[0145] After the circuit system is powered, an excitation signal is transmitted to the electrode;

[0146] After the electrode receives the excitation signal trans...

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Abstract

The invention discloses a method for reducing metal dendrites in manganese electrodeposition, which comprises a direct-current power supply, a circuit system, electrodes and an electrolytic bath. A circuit is added to a manganese metal electrolysis device, the amplitude and frequency of electrochemical oscillation in the manganese metal electrolysis process can be effectively reduced, the chaos state of an electrolysis system is weakened, the current density is homogenized, and therefore generation of cathode metal dendrites is restrained.

Description

Technical field [0001] The present invention relates to the field of metal dendrites in the electrolytic manganese process, in particular a method of reducing metal dendrites in manganese electrodeposition. Background technique [0002] Manganese manganese is both an important foundation raw material for modern industrial development, and is also a strategic material for military and national defense. It is widely used in steel, metallurgical, electronic equipment, new energy batteries and other fields. The production of metal manganese in industrial metal is generally carried out in a manner of electrolytic solution in a sulfate solution. During manganese electrodeposition, since the polar edge current density is large, the concentration polarization is severe, the metal of the polar edge exhibits randomness in the nucleation growth direction, and finally forms dendritic dendritic crystal like needles, fly-like or other dendrites. Fractal structure. Dendrimed fractal growth is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/10C25C7/06
CPCC25C1/10C25C7/06
Inventor 刘作华李强陶长元刘仁龙谢昭明杜军范兴郑国灿孔令峰唐金晶吴丙山谢子楠李春彪
Owner CHONGQING UNIV
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