A monolithic integrated micro direct methanol fuel cell based on sulfo functionalized porous silicon

[摘要] In this paper, we demonstrate a monolithic integrated micro direct methanol fuel cell (μDMFC) for the first time. The monolithic integrated μDMFC combines proton exchange membrane (PEM) and Pt nanocatalysts, in which PEM is achieved by the functionalized porous silicon membrane and 3D Pt nanoflowers being synthesized in situ on it as catalysts. Sulfo groups functionalized porous silicon membrane serves as a PEM and a catalyst support simultaneously. The μDMFC prototype achieves an open circuit voltage of 0.3 V, a maximum power density of 5.5 mW/cm2. The monolithic integrated μDMFC offers several desirable features such as compatibility with micro fabrication techniques, an undeformable solid PEM and the convenience of assembly.

[发布机构] Insititute of Microelectronic, Tsinghua University, Beijing; 100084, China^1;School of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou; 450000, China^2;Université Paris-Est, ESCOM, ESIEE Paris, Noisy-le-Grand; 93162, France^3

[效力级别] 能源学

[关键词] Desirable features;Functionalized;Maximum power density;Micro direct methanol fuel cell;Micro-fabrication techniques;Proton-exchange membrane;Silicon membranes