Electrochemical detection chip with non-disposable reference electrode structure
A reference electrode and detection chip technology, which is applied in the field of electrochemical chip preparation, can solve the problems of poor stability of the reference electrode and limited electrochemical detection system, and achieve the effect of improving stability and prolonging life
Active Publication Date: 2015-03-04
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology
[0003] The purpose of the present invention is to provide an electrochemical detection chip with a non-disposable reference electrode structure. The technical problem to be solved is that the electrochemical detection system of the conventional electrochemical chip is partially limited and the stability of the reference electrode is relatively poor. question
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Embodiment 1
[0020] The chip of the present invention is provided with an electrochemical reaction cell 2 and a reference electrode region 8, the electrochemical reaction cell 2 and the reference electrode region 8 are independent of each other and separated by the chip structure 7, between the two by metal or The non-metal strip 5 is connected, the metal or non-metal strip 5 and the chip structure 7 are provided with micro-nano pores 3, the electrochemical reaction cell 2 has an auxiliary electrode 1 and a working electrode 6, and the reference In the electrode region 8 there is the reference electrode 4 .
[0021] In this embodiment, the reference electrode is a silver-silver chloride reference electrode, and of course it can also be other electrodes that play the role of a reference electrode, such as any half-cell system with a stable reference potential, such as a Pt reference electrode, a metal / Metal salt solution (such as Ag / Ag+, Cu / CuSO4) electrodes, etc.
[0022] The electrochem...
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Abstract
The invention provides an electrochemical detection chip with a non-disposable reference electrode structure. According to the chip, a reference electrode on the chip is isolated from an electrochemical reaction tank, and the reference electrode and the electrochemical reaction tank are connected through a metal or non-metal strip band. With ion exchanging performed on the metal or non-metal strip band with a micro-nano gap of the chip structure and combined action of potential conduction of the metal or non-metal strip band, regular work of the reference electrode is maintained. With the technical scheme of the electrochemical detection chip, the problems that the electrochemical detection system part is limited and the stability of the reference electrode is poor since the reference electrode of a conventional electrochemical chip is directly contacted with solution to be detected when being tested can be solved; according to the chip, the stability of the reference electrode system on the chip can be improved, and the service life of the chip is prolonged, so that the electrochemical detection chip is capable of being suitable for long-term use.
Description
technical field [0001] The invention belongs to the field of electrochemical chip preparation, in particular to an electrochemical detection chip with a non-disposable reference electrode structure. Background technique [0002] With the development of microfluidic chip technology, electrochemical microfluidic chips have attracted extensive attention from scientific researchers due to their advantages such as easy integration of microelectrodes on the chip and easy miniaturization of electrochemical instrument bodies. With the development of technology, using electrochemical deposition, evaporation sputtering, screen printing, electroless deposition and other methods, the current electrochemical three-electrode system has been successfully applied to various materials such as glass, ceramics, polymer materials and even paper chips. Integration on other substrates. For a long time, disposable use has been the mainstream in the development of electrochemical detection chips. ...
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IPC IPC(8): G01N27/416
Inventor 陈朝贵张晓伟曹煊张述伟马然刘乃友罗非张颖颖褚东志刘东彦张颖石小梅范萍萍吕靖高杨张婷曹璐王昭玉王洪亮张国华任国兴程岩王茜侯广利刘岩
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI