A mechanical mover with hydrogen storage alloy was made up and tested. In former research, a unimorph structure was proposed, in which a silicone rubber with LaNi 5 alloy powder distributed was piled up on a pure silicone rubber sheet. Using this structure we succeeded a soft movement of the device by applying hydrogen gas pressure. Because the movement indicated slow response, therefore in this research, we tried to improve the response of the moving device by mixing a catalyst of Pd Al 2 O 3 powder into the hydrogen storage alloy powder in the rubber. We obtained drastically improved responses in a movement of the device.

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