Abstract
• An amperometric hydrogen sensor that based on [Py] [HSO 4 ]/PVDF composite membranes • The hydrogen sensor could operate under anaerobic conditions. • The sensing mechanism of hydrogen sensors with proton ionic liquid electrolytes was investigated. Hydrogen as a sustainable energy source can contribute to overcoming the shortage of fossil fuel. The storage and transport of hydrogen will further increase the demand for sensors that detect trace amounts of hydrogen in anaerobic conditions. So, we have designed an innovative amperometric hydrogen sensor that based on protic ionic liquid (PIL) electrolyte. The sensor based on [Py][HSO 4 ] was found to be highly sensitive and selective to hydrogen with a good linearity and long-term stability. The sensor also demonstrates its potential in the field of hydrogen fuel storage by providing excellent performance at low temperatures.
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