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학술지 Multiplex Lithography for Multilevel Multiscale Architectures and its Application to Polymer Electrolyte Membrane Fuel Cell
Cited 45 time in scopus Download 2 time Share share facebook twitter linkedin kakaostory
조혜성, 김상문, 강영식, 김준수, 장세근, 김민형, 박현철, 방정원, 서순민, 서갑양, 성영은, 최만수
Nature Communications, v.6, pp.1-8
Nature Publishing Group
The production of multiscale architectures is of significant interest in materials science, and the integration of those structures could provide a breakthrough for various applications. Here we report a simple yet versatile strategy that allows for the LEGO-like integrations of microscale membranes by quantitatively controlling the oxygen inhibition effects of ultraviolet-curable materials, leading to multilevel multiscale architectures. The spatial control of oxygen concentration induces different curing contrasts in a resin allowing the selective imprinting and bonding at different sides of a membrane, which enables LEGO-like integration together with the multiscale pattern formation. Utilizing the method, the multilevel multiscale Nafion membranes are prepared and applied to polymer electrolyte membrane fuel cell. Our multiscale membrane fuel cell demonstrates significant enhancement of performance while ensuring mechanical robustness. The performance enhancement is caused by the combined effect of the decrease of membrane resistance and the increase of the electrochemical active surface area.
KSP 제안 키워드
Combined effect, Electrochemical active surface area, Inhibition effects, Membrane resistance, Oxygen concentration, Polymer electrolyte membrane fuel cell(PEFC), Spatial control, Ultraviolet-curable, materials science, mechanical robustness, nafion membranes