Preparation of conductive polyaniline-modified titanium-based lead dioxide electrode by anodic oxidation co-deposition method

A technology of lead dioxide and anodic oxidation, which is applied in the direction of battery electrodes, lead-acid battery electrodes, electrode carriers/collectors, etc., can solve problems such as the difficulty of simultaneously constructing a conductive space network, and achieve improved anti-passivation performance and high-response Effects of activity and long electrode life

Active Publication Date: 2022-06-28
YANGZHOU UNIV
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Problems solved by technology

[0029] The main problem in the process of adding aniline to the battery formation solution to realize polyaniline modification of the battery positive grid and positive active material is that polyaniline modification can only be performed on the positive grid and the active surface of the positive electrode, and it is difficult to simultaneously construct a conductive space network. , Inhibit the sulfation of active substances and regulate the microstructure of active substances and other multiple functions

Method used

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  • Preparation of conductive polyaniline-modified titanium-based lead dioxide electrode by anodic oxidation co-deposition method
  • Preparation of conductive polyaniline-modified titanium-based lead dioxide electrode by anodic oxidation co-deposition method

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Embodiment 1

[0069]As shown in the accompanying drawing, a method for preparing a conductive polyaniline-modified titanium-based lead dioxide electrode by anodic oxidation co-deposition method, especially a titanium-based metal oxide electrode prepared by thermal decomposition of a precursor as an anode, containing Pb 2+ The aqueous solution of aniline, aniline and alkali metal nitrate is the electrolyte, and the anodic oxidation co-deposition technology is used to generate Pb at the electrode / electrolyte interface. 2+ Electrochemical oxidation reaction with aniline to obtain lead dioxide and polyaniline respectively, the generated lead dioxide and polyaniline are co-deposited on the surface of titanium-based metal oxide electrodes to prepare polyaniline-modified titanium-based lead dioxide electrodes, and then washed A conductive polyaniline-modified titanium-based lead dioxide electrode is prepared by removing impurities and electrochemically doping and activating in aqueous sulfuric aci...

Embodiment 2

[0083] As shown in the accompanying drawing, a method for preparing a conductive polyaniline-modified titanium-based lead dioxide electrode by anodic oxidation co-deposition method, especially a titanium-based metal oxide electrode prepared by thermal decomposition of a precursor as an anode, containing Pb 2+ The aqueous solution of aniline, aniline and alkali metal nitrate is the electrolyte, and the anodic oxidation co-deposition technology is used to generate Pb at the electrode / electrolyte interface. 2+ Electrochemical oxidation reaction with aniline to obtain lead dioxide and polyaniline respectively, the generated lead dioxide and polyaniline are co-deposited on the surface of titanium-based metal oxide electrodes to prepare polyaniline-modified titanium-based lead dioxide electrodes, and then washed A conductive polyaniline-modified titanium-based lead dioxide electrode is prepared by removing impurities and electrochemically doping and activating in aqueous sulfuric ac...

Embodiment 3

[0097] As shown in the accompanying drawing, a method for preparing a conductive polyaniline-modified titanium-based lead dioxide electrode by anodic oxidation co-deposition method, especially a titanium-based metal oxide electrode prepared by thermal decomposition of a precursor as an anode, containing Pb 2+ The aqueous solution of aniline, aniline and alkali metal nitrate is the electrolyte, and the anodic oxidation co-deposition technology is used to generate Pb at the electrode / electrolyte interface. 2+ Electrochemical oxidation reaction with aniline to obtain lead dioxide and polyaniline respectively, the generated lead dioxide and polyaniline are co-deposited on the surface of titanium-based metal oxide electrodes to prepare polyaniline-modified titanium-based lead dioxide electrodes, and then washed A conductive polyaniline-modified titanium-based lead dioxide electrode is prepared by removing impurities and electrochemically doping and activating in aqueous sulfuric ac...

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Abstract

A method for preparing a conductive polyaniline-modified titanium-based lead dioxide electrode by anodic oxidation co-deposition method, especially a titanium-based metal oxide electrode prepared by thermal decomposition of a precursor as an anode, with Pb-containing 2+ The aqueous solution of aniline and alkali metal nitrate is used as an electrolyte, and a method for preparing a conductive polyaniline-modified titanium-based lead dioxide electrode through anodic oxidation co-deposition and electrochemical doping activation in sulfuric acid aqueous solution. The invention can realize the in-situ preparation of aniline to modify the lead dioxide electrode, and at the same time realize multiple functions such as the construction of the conductive space network of the lead dioxide electrode, the inhibition of the sulfation of the active material, and the regulation of the microstructure of the active material, and can effectively improve the lead dioxide electrode. Electrode performance.

Description

technical field [0001] A method for preparing a conductive polyaniline-modified titanium-based lead dioxide electrode by anodic oxidation co-deposition method, especially a titanium-based metal oxide electrode prepared by thermal decomposition of a precursor as an anode, with Pb-containing 2+ The aqueous solution of aniline and alkali metal nitrate is used as an electrolyte, and a method for preparing a conductive polyaniline-modified titanium-based lead dioxide electrode through anodic oxidation co-deposition and electrochemical doping activation in sulfuric acid aqueous solution. The electrode can be used as a positive plate of a lead storage battery, and belongs to the technical field of electrode material preparation and the preparation of a positive plate of a lead storage battery. Background technique [0002] Lead-acid batteries use electrochemical principles to realize the transformation of matter and energy. The characteristics of the electrode plate / electrolyte int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/16H01M4/66H01M4/68H01M4/73
CPCH01M4/16H01M4/667H01M4/68H01M4/73Y02E60/10
Inventor 王雅琼李成张小兴韩斌许文林
Owner YANGZHOU UNIV
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