Production of all-polymer self-supporting electrode and application of all-polymer self-supporting electrode in flexible electrochemical sensor

Abstract

The invention discloses production of an all-polymer self-supporting electrode and an application of the all-polymer self-supporting electrode in a flexible electrochemical sensor, and relates to thetechnical field of electrochemical sensors. The production comprises the following steps: a) producing a polypyrrole film with a sandwich structural formula by adopting an electrochemical polymerization method; and synthesizing a pentaerythritol ethoxylate- polypyrrole (PEE-PPy) film by adopting an electrochemical polymerization mode in an organic phase system, namely an organic electrolyte, taking a glass sheet plated with titanium and platinum in sequence as a working electrode, taking a stainless steel electrode as a counter electrode, and taking a silver wire as a reference electrode; According to the production of the all-polymer self-supporting electrode and the application of the all-polymer self-supporting electrode in the flexible electrochemical sensor, the polypyrrole compositefilm with the sandwich structural formula is used as the self-supporting electrode for detecting dopamine by the flexible electrochemical sensor, and the sensor does not need to be assembled by combining an additional current collector, a mechanical substrate, a conductive additive and the like; and dopamine detection sensitivity is high, the stability is high, and the capability of bearing long-term mechanical deformation is realized.

Description

technical field [0001] The invention relates to the technical field of electrochemical sensors, in particular to the preparation of an all-polymer self-supporting electrode and its application in flexible electrochemical sensors. Background technique [0002] In recent years, with the rapid development of mobile Internet and smart terminals, wearable electronic devices have shown a huge market prospect. As one of the core components, flexible wearable electronic sensors, with their wide range, high sensitivity and fast response Features such as time, portability, comfort of use, and multifunctional integration have become the focus of attention, motivating researchers at home and abroad to study and develop flexible and wearable electronic sensors. Flexible electrochemical sensors can realize real-time health monitoring of the human body by converting chemical signals into electrical signals. Current research is mainly to realize the flexibility and wearability of electroch...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a preparation of an all-polymer self-supporting electrode and its application in flexible electrochemical sensors. The problem of low mechanical strength and poor flexibility

On the other hand, when today's flexible conductive electrodes are applied to flexible electrochemical sensors, there is a significant difference in the modulus between the conductive material and the substrate, and repeated mechanical deformation will cause peeling and delamination between the conductive material and the substrate. , which seriously affects the durability and stability of flexible electrochemical sensors, the invention effectively solves the problems of poor stability and weak resistance to mechanical deformation of flexible wearable sensors

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