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Lead-free primary battery type oxygen sensor

A technology of oxygen sensor and potassium hydroxide, applied in instruments, scientific instruments, material analysis through electromagnetic means, etc., can solve problems such as self-corrosion of anode surface and limited anode life

Active Publication Date: 2019-08-23
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lifetime of these types of anodes appears to be very limited due to self-corrosion and passivation of the anode surface

Method used

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  • Lead-free primary battery type oxygen sensor
  • Lead-free primary battery type oxygen sensor

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Embodiment Construction

[0007] Embodiments disclosed herein may take many different forms, and with particular embodiments shown in the drawings and described in detail herein, this disclosure is to be construed as an example of the inventive concept, and the best mode for carrying it out. , and are not intended to limit the claims of the present application to the specific embodiments illustrated.

[0008] The present invention relates to a lead-free primary battery type oxygen sensor. figure 1 A lead-free galvanic oxygen sensor 10 is depicted generally shown in accordance with one exemplary embodiment. The sensor 10 can be made of a plastic or metal housing 12 . Housing 12 includes a cathode 14, a bismuth oxygen anode 16, an aqueous electrolyte 18 including salts and polyols, and a barrier 20 (a permeable membrane or capillary). Cathode 14 and anode 16 may be coupled to an external load resistor 24 through a set of wire collectors 22 .

[0009] Cathode 14 is a conductive material selected from t...

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Abstract

The invention discloses a lead-free primary battery type oxygen sensor with water-based electrolyte and a bismuth anode. The electrolyte contains polyhydric alcohols besides water and salt. What is unexpected is that the sensor adopting the electrolyte has higher passivation resistance.

Description

technical field [0001] The present invention relates to a lead-free primary battery type oxygen sensor. More particularly, the present invention relates to a lead-free galvanic oxygen sensor having a housing, a cathode, a bismuth-based anode, and an aqueous electrolyte comprising salts and polyols. Background technique [0002] Galvanic oxygen sensors based on consumable lead anodes are known. These instruments are generally reliable and have high sensitivity. However, the presence of lead in such instruments is undesirable due to environmental and health concerns associated with lead contamination. [0003] Therefore, there is a need for reliable, sensitive galvanic oxygen sensors that avoid the use of lead anodes. [0004] Recently, attempts have been made to replace lead anodes with anodes made of zinc, aluminum and tin. However, the lifetime of these types of anodes appears to be very limited due to self-corrosion and passivation of the anode surface. Contents of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/404
Inventor C·邓沙特
Owner HONEYWELL INT INC