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With the microminiaturization of fuel cells, the traditional testing techniques is no longer suitable to some parameters test for micro fuel cells. Therefore, micro-scale measuring and testing techniques based on micro-electro-mechanical systems (MEMS) is introduced into fuel cells measurement. In this paper the measurement methods for temperature, humidity and concentration testing in fuel cells are reviewed. Visualization system of two-phase flow based on microscopy for micro fuel cells is discussed. And the long-term potential of micro scale measuring and technologies for fuel cells are also analyzed.
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