Manganese dioxide battery based on electrochemical metallurgy principle

A manganese dioxide battery and manganese dioxide electrode technology, which is applied in secondary batteries, electrochemical generators, battery electrodes, etc., can solve the problems of increasing battery cost, limiting battery energy density, and zinc cannot exist stably, and achieve high Energy density, high cycle effect

Inactive Publication Date: 2020-06-26
湖南源达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, zinc cannot exist stably in acidic solution, which makes the electrochemical metallurgical zinc-manganese battery must use ion exchange membrane to introduce acidic electrolyte and alkaline electrolyte into the battery at the same time, providing the manganese dioxide electrode and zinc electrode respectively. good reaction conditions
Although the resulting electrochemical metallurgical zinc-manganese battery exhibits high discharge voltage and good cycle characteristics, the use of ion-exchange membranes increases the cost of the battery, and the use of two electrolytes also limits the energy density of the battery.

Method used

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  • Manganese dioxide battery based on electrochemical metallurgy principle

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Embodiment 1

[0033] A manganese dioxide battery based on the principle of electrochemical metallurgy, using tin as the negative electrode based on the electrochemical metallurgical reaction. An aqueous solution of 3 mol / L sulfuric acid + 0.1 mol / L manganese sulfate + 0.1 mol / L tin sulfate is used as the electrolyte. Among them, the hydrogen ion concentration is about 6mol / L. Manganese dioxide was used as the positive electrode. The open circuit voltage of the obtained battery is about 1.4V, and can be cycled stably for more than 300 cycles.

Embodiment 2

[0035] A manganese dioxide battery based on the principle of electrochemical metallurgy, using cadmium as the negative electrode based on the electrochemical metallurgical reaction. An aqueous solution of 3mol / L sulfuric acid+0.1mol / L manganese sulfate+0.1mol / L cadmium sulfate is used as the electrolyte. Among them, the hydrogen ion concentration is about 6mol / L. Manganese dioxide was used as the positive electrode. The open circuit voltage of the obtained battery is about 1.7V, and can be cycled stably for more than 200 cycles.

Embodiment 3

[0037] A manganese dioxide battery based on the principle of electrochemical metallurgy, using tin as the negative electrode based on the electrochemical metallurgical reaction. An aqueous solution of 5 mol / L sulfuric acid + 0.1 mol / L manganese sulfate + 0.1 mol / L tin sulfate is used as the electrolyte. The hydrogen ion concentration is about 10mol / L. Manganese dioxide was used as the positive electrode. The open circuit voltage of the obtained battery is about 1.5V, and can be cycled stably for more than 200 cycles.

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Abstract

The invention discloses a manganese dioxide battery based on an electrochemical metallurgy principle, and relates to the technical field of batteries. The manganese dioxide battery comprises a manganese dioxide electrode, an electrolyte and a cathode, wherein the electrolyte is one or more of sulfuric acid, acetic acid, phosphoric acid and nitric acid containing additives, and the additives comprise one or more of manganese sulfate, tin sulfate, cadmium sulfate and copper sulfate. The invention aims to obtain a battery with high energy density and high circularity by introducing an electrochemical metallurgical reaction into the battery. The manganese dioxide positive electrode material and the manganese dioxide negative electrode material disclosed by the invention can generate reversibledissolution and deposition processes in charging and discharging processes. By using an electrochemical metallurgical reaction system, a high-circularity aqueous battery is obtained. The manganese dioxide battery based on the electrochemical metallurgy principle, which has high circularity and high energy density, can be obtained, and has great scientific research and social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a manganese dioxide battery based on the principle of electrochemical metallurgy. Background technique [0002] Electrochemical metallurgical batteries, that is, batteries whose positive and negative electrodes are based on electrochemical metallurgical reactions (metal dissolution / deposition reactions). Electrochemical metallurgical batteries originated from Daniel batteries, in which the zinc negative electrode and copper positive electrode continuously undergo zinc dissolution and copper deposition reactions on the electrodes during battery discharge. During the charging process of the battery, zinc deposition and copper dissolution reactions occur. The electrode of the denier cell based on the electrochemical metallurgical reaction has good cyclability. In recent years, manganese dioxide has been found to undergo reversible electrochemical metallurgical reactions in acidi...

Claims

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Application Information

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IPC IPC(8): H01M10/36H01M4/38
CPCH01M4/38H01M4/387H01M10/36Y02E60/10
Inventor 钟澄刘斌胡文彬宋永江
Owner 湖南源达新材料有限公司
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