Miniaturized electrochemical methanol sensor without gas diffusion backings

Lee, Myoung Seok; Sohn, Juhee; Shim, Jaehee

doi:10.1016/j.snb.2006.12.038

Cited by 21 publications

(4 citation statements)

References 8 publications

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“…Investigation of the electrochemical process at anode is necessary due to the absence of diffusion layer [30]. The experiment was carried out with high oxygen flow rate of 100 ml min −1 to decrease the influence of cathode.…”

Section: Response For Formaldehydementioning

confidence: 99%

A fuel-cell-type sensor for detection of formaldehyde in aqueous solution

Sun

Qin

et al. 2007

Sensors and Actuators B: Chemical

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Section: Response For Formaldehydementioning

confidence: 99%

A fuel-cell-type sensor for detection of formaldehyde in aqueous solution

Sun

Qin

et al. 2007

Sensors and Actuators B: Chemical

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“…Lee et al. [7] fabricated a miniaturized electrochemical sensor to monitor the concentration of methanol used as fuel in DMFCs. Designed to be smaller than a metallic coin, the sensor is tuned to be placed anywhere in the fuel solution in the DMFC as long as it is in direct contact with the fuel.…”

Section: Introductionmentioning

confidence: 99%

Determination of methanol concentration for DMFC systems by fuel cell‐based sensor

2022

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Direct methanol fuel cells are devices that convert the chemical energy of methanol fuel having high energy density directly into electrical energy by electrochemical reactions. Methanol must be supplied to the fuel cell system as an aqueous solution to complete the reaction. Therefore, controlling and adjusting of methanol ratio in the methanol‐water mixture is critical for the continuity of direct methanol fuel cell performance. In this study, two fuel cell‐based electrochemical sensors are developed to adjust the amount of methanol in an aqueous solution in a direct methanol fuel cell. The experimental setup is prepared for the developed sensors and the effects of parameters, such as temperature, methanol flow rate, oxidizing effect, and methanol concentration, affecting the sensor performance are observed experimentally. It is observed that the experimental results obtained in the design without air input are more stable than that of the sensor working with air. However, in air‐independent design, the measurement value lost its stability after 2M concentration. The change in methanol flow rate did not cause any change in either sensor. High temperature and low methanol concentrations are found to be the main criteria for the best sensor performance.

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“…Among these, the electrochemical method, which uses current signal to quantify the methanol concentration [3][4][5], is regarded as a promising strategy. Currently, research is primarily focused on the development of novel electrode materials that can electro-catalyze methanol easily and effectively [6][7][8][9]. At present, the sensors with methanol dehydrogenase [10], as well as the electrodes modified with Pt and the Pt-based (Ru, Ir or Sn) nanoparticles [11][12][13], are widely used due to their significant benefits such as a low detection limit, excellent sensitivity, and high selectivity.…”

Section: Introductionmentioning

confidence: 99%