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  1. 箇条書き項目 Hydrogen concentration sensor

Technical information

  1. 箇条書き項目 Hydrogen gas promises to be a major clean fuel. Thus, sensors that can measure the concentrations of hydrogen gas over a wide dynamic range (e.g., 1-99.9%) are in demand for the production, storage, and utilization of hydrogen gas. However, it is difficult to directly measure hydrogen gas concentrations greater than 10% using conventional sensors.

  1. 箇条書き項目We introduce a simple sensor using an electrolyte made of manganese dioxide that enables in-situ measurements of hydrogen gas concentration over a wide range of 1~99.9% at room temperature.

Fig. 1 Response and standard line of the H2 sensor

  1. a)Quick response for H2 intake (3mL). b) Standard line to determine the H2 concentration based on the linearity  between (dv/dt)max response (blue) and H2 concentration.

Fig. 2 Prototype of H2 sensor (black cylinder) and display unit

The latest progress in this project is explained on the Linkedin.



  1. H.Koyanaka, Y. Ueda, K. Takeuchi, and A. I. Kolesnikov, Effect of crystal structure of manganese dioxide on response for electrolyte of a hydrogen sensor operative at room temperature, Sensors & Actuators: B, Vol. 183, pp. 641-647, (2013)  

  1. H.Koyanaka, Y. Ueda, K. Takeuchi, and A. I. Kolesnikov, Proton conduction in electrolyte made of manganese dioxide for hydrogen gas sensor, The 14th International Meeting on Chemical Sensors Proceedings, p. 497-499, (2012)

Y. Ueda, Y. Tokuda, T. Yoko, K. Takeuchi, A. I. Kolesnikov, and H. Koyanaka, Electrochemical property of proton-conductive manganese dioxide for sensoring hydrogen gas concentration, Solid State Ionics, 225, 4, pp. 282-285, (2012)

  1. Y.Ueda, A. I. Kolesnikov, H. Koyanaka, Sensoring hydrogen gas concentration using electrolyte made of proton conductive manganese dioxide, Sensors & Actuators: B. 155, pp.893-896, (2011)

  1. Y.Ueda, M. Tsujimoto, H. Koyanaka, K. Takeuchi, Y. Tokuda, Electrochemical property of hydrogen gas sensor using a manganese dioxide electrolyte, Chemical Sensors, Vol. 26, 31-33, (2010)

H. Koyanaka, Y. Ueda, Hydrogen gas sensor using manganese nano powders, Fuel Cell, Vol.10, No.1, pp.90-94, (2010)


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MnO2 based electrolyte covers wide dynamic range

                                                                          for measuring H2 concentration

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