HYDROGEN GAS CONCENTRATION SENSOR

• Main Authors: HARADA SHUJI, TAKAGI KATSUMI, YUKI YOJI, FUJIWARA KENICHI
• Format: Patent
• Language: English; Japanese
• Published: 14.05.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

To provide a hydrogen gas concentration sensor that has a new configuration and can detect concentration of hydrogen gas present in gas or liquid.MEANS FOR SOLVING THE PROBLEM: A hydrogen gas concentration sensor comprises a first electrode piece, a second electrode piece, an electrolyte in which the electrode pieces are disposed apart from each other, and a container which houses the first electrode piece, the second electrode piece, and the electrolyte. The first electrode piece contains a first electrode material indicating a standard electromotive force value of 0.8 V or more in a cell having the configuration of H2(-)|50 mol/m3H2SO4| a substance sample (+). The second electrode contains a second electrode material indicating a standard electromotive force value of less than 0.8 V in a cell having the same configuration. The first electrode piece penetrates through the electrolyte and has an end that is exposed to the outside of the container, and a void space is formed between the first electrode piece and the container end.SELECTED DRAWING: Figure 1 【課題】気体中や液体中に存在する水素ガス濃度を検出することが可能な新規な構成の水素ガス濃度センサを提供する。【解決方法】第１電極片及び第２電極片と、これら電極片が離隔して配設された電解質と、前記第１電極片、前記第２電極片及び前記電解質を収容する容器と、を備え、前記第１電極片は、Ｈ2（－）｜５０ｍｏｌ／ｍ3Ｈ2ＳＯ4｜物質試料（＋）で構成したセルの標準起電力値が０．８Ｖ以上の値を示す第１電極材料を含み、前記第２電極は、同構成でのセルでの標準起電力値が０．８Ｖ未満の値を示す第２電極材料を含み、前記第１電極片は、前記電解質を貫通し、端部が前記容器から外部に露出しており、前記第１電極片と前記容器端部との間には空隙が形成されている。【選択図】図１