联系我们  |  网站地图  |  English   |  移动版  |  中国科学院 |ARP
站内搜索:
首页 简介 管理部门 科研部门 支撑部门 研究队伍 科研成果 成果转化 研究生教育 党建与创新文化 科普 信息公开 办公内网 OA系统
科技信息
清华大学在力学结构超材料...
科学家发明光催化水裂解新...
摩擦/力致发光研究取得进展
Physicists uncover why n...
New photodetector could ...
科学家为设计手性发光材料...
二维本征铁磁半导体研究获...
3D打印材料可磁化形变
Nobarrier to application...
Turbocharge for lithium ...
层状钒酸钾K0.5V2O5用于非...
石墨烯等离激元寿命的新突破
西安交大多模式微纳平台实...
The physics of better ba...
Research shows graphene ...
现在位置:首页>新闻动态>科技信息
New method efficiently generates hydrogen from water
2018-02-05 09:44:51 | 【 【打印】【关闭】

WSU researchers have found a way to create large amounts of inexpensive nanofoam catalysts that can facilitate the generation of hydrogen on a large scale by splitting water molecules. Credit: Washington State University

  Washington State University researchers have found a way to more efficiently generate hydrogen from water—an important key to making clean energy more viable.

  Using inexpensive nickel and iron, the researchers developed a very simple, five-minute method to create large amounts of a high-quality catalyst required for the chemical reaction to split water.

  They describe their method in the February issue of the journalNano Energy.

  Energy conversion and storage is a key to the clean energyeconomy. Because solar and wind sources produce power only intermittently, there is a critical need for ways to store and save the electricity they create. One of the most promising ideas for storing renewable energy is to use the excess electricity generated from renewables to split water into oxygen and hydrogen. Hydrogen has myriad uses in industry and could be used to power hydrogen fuel-cell cars.

  Industries have not widely used the water splitting process, however, because of the prohibitive cost of the precious metal catalysts that are required—usually platinum or ruthenium. Many of the methods to split water also require too much energy, or the required catalyst materials break down too quickly.

  In their work, the researchers, led by professor Yuehe Lin in the School of Mechanical and Materials Engineering, used two abundantly available and cheap metals to create a porous nanofoam that worked better than most catalysts that currently are used, including those made from the precious metals. The catalyst they created looks like a tiny sponge. With its unique atomic structure and many exposed surfaces throughout the material, the nanofoam can catalyze the important reaction with less energy than other catalysts. The catalyst showed very little loss in activity in a 12-hour stability test.

  "We took a very simple approach that could be used easily in large-scale production," said Shaofang Fu, a WSU Ph.D. student who synthesized the catalyst and did most of the activity testing.

Yuehe Lin (left) and Shaofang Fu, a WSU Ph.D. student, in WSU Lin's materials engineering lab Credit: Washington State University

  The WSU researchers collaborated on the project with researchers at Advanced Photon Source at Argonne National Laboratory and Pacific Northwest National Laboratory.

  "The advanced materials characterization facility at the national laboratories provided the deep understanding of the composition and structures of the catalysts," said Junhua Song, another WSU Ph.D. student who worked on the catalyst characterization.

  The researchers are now seeking additional support to scale up their work for large-scale testing.

  "This is just lab-scale testing, but this is very promising," said Lin.

 

  Explore further: Improved water splitting advances renewable energy conversion 

  More information: Shaofang Fu et al, Ultrafine and highly disordered Ni 2 Fe 1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte, Nano Energy (2017). DOI: 10.1016/j.nanoen.2017.12.010    

  Journal reference: Nano Energ  

版权所有 中国科学院上海硅酸盐研究所 沪ICP备05005480号-1
长宁园区地址:上海市长宁区定西路1295号 电话:86-21-52412990 传真:86-21-52413903 邮编:200050
嘉定园区地址:上海市嘉定区和硕路585号  电话:86-21-69906002 传真:86-21-69906700 邮编:201899