期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 23, 页码 6896-6899出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201501971
关键词
sustainable chemistry; fuel cell; hydrogen; micromotors; sodium borohydride
资金
- Defense Threat Reduction Agency-Joint Science and Technology Office for Chemical and Biological Defense [HDTRA1-13-1-0002]
A micromotor-based strategy for energy generation, utilizing the conversion of liquid-phase hydrogen to usable hydrogen gas (H-2), is described. The new motion-based H-2-generation concept relies on the movement of Pt-black/Ti Janus microparticle motors in a solution of sodium borohydride (NaBH4) fuel. This is the first report of using NaBH4 for powering micromotors. The autonomous motion of these catalytic micromotors, as well as their bubble generation, leads to enhanced mixing and transport of NaBH4 towards the Pt-black catalytic surface (compared to static microparticles or films), and hence to a substantially faster rate of H-2 production. The practical utility of these micromotors is illustrated by powering a hydrogen-oxygen fuel cell car by an on-board motion-based hydrogen and oxygen generation. The new micromotor approach paves the way for the development of efficient on-site energy generation for powering external devices or meeting growing demands on the energy grid.
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