A platinum-free zero-carbon-emission easy fuelling direct hydrazine fuel cell for vehicles
A platinum-free zero-carbon-emission easy fuelling direct hydrazine fuel cell for vehicles
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DOI：
10.1002/anie.200701334
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发表时间：
2007-01-01
影响因子：
16.6
通讯作者：
Kobayashi, Tetsuhiko
中科院分区：
文献类型：
--
作者：
Asazawa, Koichiro;Yamada, Koji;Kobayashi, Tetsuhiko
使用燃料电池汽车（FCV）的两个主要障碍是与铂催化剂相关的费用以及与氢的填充和储存相关的许多限制。质子（H+）交换膜的高酸性需要耐腐蚀的铂催化剂和昂贵的双极板。在这里，我们已经开发了一种新的无铂燃料电池，从相反的概念，通过使用固体氢氧化物阴离子（OH）交换聚合物膜，并通过改变燃料源从氢到液体肼（N2H4）。该无铂的直接肼燃料电池（DHFC）包括用于阳极的钴或镍和用于阴极的钴或银，其表现出0.5Wcm2的最大发电性能，这与氢燃料电池相当。DHFC系统实现零排放，不产生任何二氧化碳。虽然肼具有致突变性，但开发了一种解毒技术，该技术将肼安全地固定在聚合物中的羰基上，然后在发电时通过溶剂释放肼。肼的机载再吸附是可能的，并且在填充站中的肼供应也可以在不返回工厂的情况下实现。直接肼燃料电池指出了燃料电池汽车的未来。
The two major barriers regarding the use of fuel cell vehicles (FCVs) are the expense associated with platinum catalysts and the many restrictions associated with the filling and storage of hydrogen. The highly acidic nature of proton (H+) exchange membranes requires a corrosion-proof platinum catalyst and expensive bipolar plate. Here we have developed a new platinum-free fuel cell, from the reverse concept, by using a solid hydroxide anion (OHÀ) exchange polymer membrane and by changing the fuel source from hydrogen to liquid hydrazine (N2H4). This platinum-free, direct hydrazine fuel cell (DHFC), comprising cobalt or nickel for the anode and cobalt or silver for the cathode, exhibits a maximum power generation performance of 0.5 WcmÀ2, which is comparable to a hydrogen fuel cell. The DHFC system achieves zero emission and does not produce any carbon dioxide. Although hydrazine is mutagenic, a detoxification technique was developed which safely fixed hydrazine to the carbonyl groups in the polymer and then released hydrazine through a solvent at the time of power generation. The onboard readsorption of hydrazine is possible, and the hydrazine supply in a filling stand can also be attained without returning to a factory. The direct hydrazine fuel cell points to the future of fuel cell vehicles.