A long-term stable power supply μDMFC stack for wireless sensor node applications

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Wu, Z.L.^1 ; Wang, X.H.^1,2 ; Teng, F.^1 ; Li, X.Z.^1 ; Wu, X.M.^1 ; Liu, L.T.^1

Institute of Microelectronics, Tsinghua University, China^1

Tsinghua National Laboratory for Information Science and Technology, China^2

关键词: A-stable;    Air breathing;    Diffusion layers;    Fuel delivery;    Maximum power output;    Micro direct methanol fuel cell;    Power supply;    Wireless sensor node;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012067/pdf
DOI  :  10.1088/1742-6596/476/1/012067

来源: IOP

【 摘 要 】

A passive, air-breathing 4-cell micro direct methanol fuel cell (μDMFC) stack is presented featured by a fuel delivery structure for a long-term & stable power supply. The fuel is reserved in a T shape tank and diffuses through the porous diffusion layer to the catalyst at anode. The stack has a maximum power output of 110mW with 3M methanol at room temperature and output a stable power even thought 5% fuel is the remained in reservoir. Its performance decreases less than 3% for 100 hours continuous work. As such, it is believed to be more applicable for powering the wireless sensor nodes.